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Project Overview I am looking for an experienced Delphi and SQLite developer to customize an existing software called RP Gerador Financeiro. The software is already working and currently generates payment receipts. I do not want a new system created from scratch. I need modifications made directly to the existing software and database. Current Environment Software: RP Gerador Financeiro Database: SQLite (.db3) Existing tables: CLIENTES RECIBOS EMPRESA RECEBER Approximately 35 active students Individual English lessons Monthly receipts Main Requirements 1. Student Database Integration The software already contains a CLIENTES table. I want all 35 students registered in the database and available directly inside the receipt generation screen. The system should allow: Selecting a student by typing the first letters of the name (autocomplete). OR selecting a student by customer number/code. OR clicking a predefined student number. When a student is selected, the software should automatically fill: Student name Monthly amount Phone number (optional) 2. Automatic Student Selection I would like a quick-selection feature inside the receipt generator. Example: Student #1 = John Smith Student #2 = Mary Johnson Student #3 = Peter Brown When I click or choose the number, the student's information should automatically populate the receipt form. I currently have approximately 35 students, but I want the system to support up to 40 students. 3. Automatic Lesson Date Calculation This is the most important part of the project. I already have a Python script that calculates lesson dates. My lessons occur weekly, but the 5th lesson of any month is NEVER charged. Example: June 2026 Tuesdays: 02/06/2026 09/06/2026 16/06/2026 23/06/2026 30/06/2026 ← 5th Tuesday (must NOT be charged) If a receipt starts on: 09/06/2026 The generated lesson dates should be: 09/06/2026-16/06/2026-23/06/2026-07/07/2026 Notice that: 30/06/2026 must be skipped because it is the 5th occurrence of that weekday within the month. The software must automatically generate the lesson dates according to this rule regardless of the starting date and continue working correctly for future years. 4. Automatic Receipt Reference Field The receipt field called: "Referente" must be generated automatically. Example: 09/06/2026-16/06/2026-23/06/2026-07/07/2026 The user should only enter the first lesson date. The software should generate the remaining dates automatically. 5. Keep Existing Receipt Layout I want to keep the current receipt design and printing format. The goal is only to improve automation and reduce manual typing. Deliverables Modified RP Gerador Financeiro software Updated SQLite database structure if needed Student selection system Automatic lesson-date generation Automatic receipt reference generation Source code changes (if available) Installation instructions Developer Requirements Delphi experience preferred SQLite experience required Experience modifying existing desktop applications Ability to work with an existing codebase rather than creating a new application Please provide an estimate of cost and completion time.
Project ID: 40496422
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As a seasoned software engineer with a specific focus in Delphi and SQLite, I possess the precise skill set you require to successfully execute this project. I have extensive experience in modifying existing desktop applications, which includes adjusting software designs while preserving core functionalities - as you're looking for in your receipt system. Additionally, my competencies in PHP and the related technologies indicate my ability to understand and adapt coding languages seamlessly. I consider the 'Automatic Lesson Date Calculation' feature to be at the heart of this project -and rest assured- it's an area I excel at. I've worked on numerous projects where date-based calculations were paramount to their effectiveness; thus, implementing the logic of excluding the 5th occurrence of a weekday within a month would be no trouble for me. My précised code will guarantee its accurate functionality, regardless of starting date and future operation. In conclusion, choosing me for this project not only guarantees my proficiency in Delphi and SQLite but also the assurance of an impeccable job done within a suitable timeframe. I am committed to delivering results that surpass client expectations - which is why my clients return to me for all their tech needs. Choose me so we can turn your vision into a reality together!
$23 USD in 1 day
4.1
4.1
40 freelancers are bidding on average $26 USD for this job

Hello, I can see the real pain here: the software works, but the manual steps are breaking the flow. Your goal isn’t a new system , it’s making RP Gerador Financeiro behave like a smarter receipt engine with less typing and fewer errors. I’ve worked on existing desktop codebases, including Delphi and SQLite updates, where the safest path is to modify the current tables and receipt logic without disturbing the layout. I’d wire the student lookup into the receipt screen with autocomplete, code selection, and quick-pick numbers up to 40 students. I’d also adapt the lesson-date generator so it skips every 5th weekday of the month and auto-builds the Referente field from the first date onward. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. If you already have the Python date script, I can either port that logic into Delphi or connect it cleanly to the existing workflow. I’ll keep the current receipt layout intact and focus only on automation, database updates, and reliable printing behavior. Could you share the Delphi version, whether you have the source code, and how the CLIENTES table is currently linked to the receipt form? Also, does the existing script need to be embedded or can it be replicated in Delphi? Looking forward to your reply so we can finalize the exact plan. Best regards, Asad
$30 USD in 5 days
8.2
8.2

As an experienced Full-Stack Developer with over 10 years of experience, I have had the opportunity to work on diverse projects while utilizing an array of technologies and frameworks. In particular, my skills in Delphi and SQLite make me particularly well-suited for your customization needs with RP Gerador Financeiro. I understand that your focus is on retaining your existing infrastructure while improving automation and reducing manual entry. Having a proven track record in modifying existing desktop applications, I can guarantee that all your customization requirements will be met impeccably. It is evident from your project description that detail-oriented precision is key, especially in managing the complex calculation of lesson dates. A testament to my ability to deliver precise solutions is my experience in dealing with finance systems and automation where accuracy is paramount. Furthermore, my versatility extends to my ability to work with different databases ensuring that any updates are executed seamlessly, so you can also expect updated SQLite database structures if needed.
$20 USD in 2 days
7.0
7.0

Hi, To enhance the RP Gerador Financeiro with student receipt automation, I'll integrate the student database for quick selection, automate lesson-date calculations, and generate receipt references seamlessly. Leveraging my expertise in Delphi, SQLite, and software modification, I'll ensure a smooth transition without compromising the existing system design. With a comprehensive understanding of your unique requirements, my solution will streamline the process, enhance efficiency, and minimize manual efforts. Let's discuss the project details further to align expectations and ensure a successful outcome. Best regards, Noor
$30 USD in 1 day
5.8
5.8

With over 5 years of full-stack development experience, I am highly adept at working with existing codebases and modifying them to meet specific requirements. This proficiency extends to both Delphi and SQLite, the technologies at the heart of your project. My work in enterprise fintech focused on high-throughput systems, which aligns well with your needs for efficient receipt generation and management. In terms of your specific project requirements, my skills in database management will be invaluable for trouble-free integration of the student database and swift selection of individual students. Further drawing upon this expertise, I will ensure that your RP Gerador Financeiro allows automatic calculation of lesson dates according to your unique conditions — a crucial aspect you emphasized in your project's brief. I understand that you're fond of your current receipt layout and design; my approach won't deviate from that, rather it will enhance automation capabilities. Additionally, I'll provide detailed installation instructions to make sure you can hit the ground running sans complications. Lastly, it'll be important to mention that I have always completed projects on time and received positive feedback from clients in previous engagements. These testimonials testify not only to my technical acumen but also my commitment to excellent communication and customer satisfaction - qualities you too can trust me with. Look\
$20 USD in 1 day
4.6
4.6

Hello Dear! Good Day! Hope you are doing fine. This is Ruhul Ajom Sagor. I am an expert "Web Developer" with 10+ years of working experience in PHP, HTML5, CSS3, JavaScript, jQuery, Bootstrap, MySql and different Frameworks. I have completed my B.S.C Engineering in Computer Science and Engineering (CSE) from BUET. Hire me and you don't have to worry about your website problems again! I'll add value to your projects by creating astonishing designs and code with high impact and optimized user interaction that leads to bigger conversions. WHAT PROBLEMS CAN I HELP YOU SOLVE? • Custom Websites Using PHP and Frameworks • e-Commerce Websites (Woo-Commerce and Shopify) • Custom WordPress themes • On-Page and Off-Page SEO • WordPress themes Customization • Database Modeling/Development • WordPress migrations and upgrades • Responsive Coding (Make your website compatible with: smartphones, tablets, desktops) • Websites speed and loading time improvements • Cross-browser compatibility • PSD to HTML to WordPress conversion • HTML5/CSS3/jQuery websites based on Bootstrap I love challenges, talking to my clients, and meeting others’ standards as well as expectations. I will be discussing everything in detail, giving my full advice and delivering through best of my skills. You are cordially welcome to discuss your project. Thank You! Best Regards, Ruhul Ajom
$20 USD in 1 day
5.4
5.4

With over [number of years] of experience, I'm your go-to choice to modify your RP Gerador Financeiro system. Alongside my profound understanding of Delphi and SQLite, my expertise spans across numerous technologie. This includes PHP, where I can maintain and update the existing SQLite database if need be, enhancing efficiency while preserving data integrity. Taking into account the details you've provided, I understand that you require an automation-focused solution to facilitate student receipt generation. Moreover, my eye for detail and comprehensive approach ensure that the data calculations will be accurately implemented within the system. As we enter a future with annual classes’ planner, this would prove indispensable. Finally, being an efficient coder has allowed me to respect complex design while automating processes wherever possible. Hence, your desired desire to maintain the current receipt layout while reducing manual effort would be strictly adhered to.I’m confident that my unique blend of technical skills, problem-solving proficiency and deep understanding of Delphi/SQLite ecosystem make me the prime candidate for this project. If given the opportunity,I can assure you timely delivery of a fully functional software which will satisfy all your specified requirements. Let's discuss further how I can turn this project into a success for you
$20 USD in 1 day
4.5
4.5

Hi, there. What I like about this project is that you're improving a system that already works instead of replacing it. The student auto-selection, SQLite integration, and automatic lesson-date generation are all clear requirements, and the 5th-week exclusion rule is especially well explained. I'd enjoy refining the existing workflow and reducing the manual work involved in creating receipts. Looking forward to learning more about the current codebase.
$100 USD in 2 days
4.2
4.2

I understand you need a Delphi and SQLite expert to customize your RP Gerador Financeiro for automatic student receipt generation. You want a reliable modification that integrates seamlessly with your current setup. I have extensive experience working with Delphi applications and SQLite databases, including automating financial document generation and handling student payment data. My approach focuses on understanding your existing system, applying precise changes to ensure accuracy and automation, and testing thoroughly. Happy to review your current setup and get this back to a stable state.
$20 USD in 7 days
4.3
4.3

I appreciate your detailed project description and the specific requirements you've outlined. The main challenge here is enhancing the existing RP Gerador Financeiro software to automate student receipt generation while keeping the current functionalities intact. With over 12 years of experience in Delphi and SQLite, I have a solid background in modifying existing desktop applications. I understand the importance of integrating your student database seamlessly, allowing for easy selection and automatic population of details such as name and lesson dates. Implementing an efficient automatic lesson date calculation based on your unique rules will significantly streamline your workflow. Additionally, I can ensure that the receipt layout remains unchanged while improving automation to minimize manual input. Could you please clarify whether you have any specific deadlines for this project?
$30 USD in 7 days
4.4
4.4

Hi, I have extensive experience working with existing business applications, database driven systems, and automation workflows. Rather than replacing your current RP Gerador Financeiro software, I can modify the existing Delphi application and SQLite database to add the functionality you need while preserving the current receipt layout and printing process. I recently worked on desktop software enhancements involving SQLite data integration, automated form population, custom business rules, and receipt generation workflows. For your project, I can implement student autocomplete and quick selection, automatic population of student details, support for up to 40 students, and the lesson date calculation logic that excludes the 5th occurrence of a weekday in any month. I can also automate the "Referente" field generation based on the first lesson date entered, eliminating manual calculations and reducing data entry errors. Best regards, George
$20 USD in 7 days
3.8
3.8

Automatic receipt generation in Delphi usually comes down to getting the SQLite query right and wiring it to the report template so it fires on save. I have worked on database automation before and can dig into your existing RP Gerador code to get this working. Two to three days to have it tested and documented. Bid and timeline are based on the description. Can start today. Want to send over the project files?
$30 USD in 5 days
3.2
3.2

Hi, I am Everett, a Delphi and SQLite developer with experience customizing existing software. I understand you need enhancements to RP Gerador Financeiro to automate student receipt generation while keeping your current receipt layout intact. The main goal is to enable quick student selection, automate lesson date calculations that skip the 5th weekly lesson, and generate automatic receipt references. I will modify the existing Delphi codebase for autocompletion and quick-select features connected to the SQLite CLIENTES table. The Python date logic will be re-implemented within Delphi to calculate lesson dates dynamically and generate the "Referente" field automatically. I can work with your current structure, updating the database only if necessary, and retain the current printing format. I am available to start immediately and can provide a demo of the student selection system and date generation within 12 hours. Q1: Do you have the source code and Python script ready to share? Q2: Are there any other receipt fields that require automation? Q3: Do you want support only for weekly lessons or flexibility for other schedules? Would you prefer to integrate the existing Python script directly or have me re-code its logic natively in Delphi for smoother integration? Best regards, Everett
$10 USD in 9 days
3.0
3.0

Hi, I can modify the existing RP Gerador Financeiro application rather than building a new system. My approach would be to first review the Delphi source code if available, inspect the SQLite .db3 structure, and confirm how CLIENTES, RECIBOS, EMPRESA, and RECEBER are currently used in the receipt flow. Then I would add the student selection features so students can be found by name autocomplete, code, or quick number selection, with name, monthly amount, and phone populated automatically. For the lesson-date logic, I would convert your Python rule into Delphi so the user only enters the first lesson date and the system generates the Referente field automatically while skipping the 5th occurrence of that weekday in any month. I will keep the existing receipt layout and printing format unchanged. Deliverables would include the modified software, any SQLite updates, tested student records, automatic date generation, and setup notes. Please share the current executable, database, and source code if available so I can estimate time and cost accurately. Regards, Chaz
$30 USD in 1 day
3.1
3.1

Hi! I can help you modify your existing Delphi + SQLite system without rebuilding it, focusing only on the automation layer you need for students and receipts. I’ll integrate a smart student selector (search, code, or quick-click), extend your CLIENTES table usage for fast autofill, and implement the automatic receipt reference generator exactly as required. I can also integrate your Python-based lesson-date logic directly into Delphi (or port it cleanly to Pascal for stability), ensuring the “skip 5th weekday of month” rule works reliably across all dates and future years. The receipt layout and printing format will remain untouched as requested. All changes will be made directly inside your current RP Gerador Financeiro codebase with SQLite compatibility preserved, plus clear documentation and installation steps for future updates. Budget and timeline will be confirmed after reviewing the current project structure and Python script integration method.
$100 USD in 2 days
2.7
2.7

Hello, I will extend RP Gerador Financeiro to support your 35-40 students and automate the receipt workflow without rewriting the entire application. The enhancements will be integrated directly into the existing Delphi+SQLite stack, preserving the current receipt layout while adding powerful automation. Key capabilities: - Student database integration: auto-complete by partial name or code, plus a quick-select interface for up to 40 students. Selecting a student fills name, monthly amount, and optional phone immediately. - Quick-selection: present a compact list (Student #1..#40) that populates the receipt form with a single click. - Automatic lesson date generation: port and adapt your Python date logic to Delphi so that weekly lessons skip the 5th occurrence in any month. Starting from the first lesson date, the system will generate the sequence for subsequent months/years reliably. - Automatic receipt reference: the Referente field will be auto-generated from the first date and subsequent dates (e.g., 09/06/2026-16/06/2026-23/06/2026-07/07/2026) without extra input. - Minimal disruption: the existing layout, printing format, and database schema remain intact; only the workflow and data bindings will be enhanced. Deliverables: - Updated Delphi source with student selection, date automation, and Referente generation - Updated SQLite integration as needed - Deployment instructions and basic test plan - Source code changes documented for future maintenance Best regards,
$30 USD in 1 day
2.3
2.3

With over a decade of experience in software development and proficiency in Delphi and SQLite, I am confident that I can expertly handle your project. I specialize in modifying existing applications, which makes me uniquely suited to enhance your RP Gerador Financeiro system. Additionally, my skills in automation and software architecture will ensure an efficient and streamlined upgrade to your existing platform. I understand the importance of elegantly incorporating new features into an established system without disturbing its functionality. My experience working with databases and my ability to optimize code will enable me to seamlessly integrate the student database and automate the lesson dates generation you require while keeping your existing receipt layout intact. My substantial comprehension of full-stack development combined with my dedication to delivering clean, secure, and optimized code make me a reliable choice for handling complex projects like this one.
$20 USD in 7 days
0.4
0.4

Hey — saw your post about customizing RP Gerador Financeiro for automatic student receipt generation. A common pain point here is ensuring smooth integration between Delphi and SQLite to handle automated workflows without glitches. Quick question: Is the existing database schema flexible enough to add new receipt fields, or will that require a redesign? I’ve done several Delphi + SQLite projects with automated financial document handling, so I know where issues usually pop up. If you send over the current code or specs, I can take a look and advise on the best approach.
$20 USD in 7 days
0.0
0.0

Hi, I am confident that I can effectively customize the RP Gerador Financeiro software to meet your requirements. With my extensive experience in Delphi and SQLite, I understand the nuances involved in modifying existing applications rather than building from scratch. To address your needs, I will integrate the 35 active students into the CLIENTES table, ensuring an intuitive selection process via autocomplete or predefined numbers. The automation of lesson dates based on your established rules will streamline the receipt generation process, which is critical for maintaining accuracy. I will also ensure that the receipt reference field auto-generates correctly based on the first lesson date provided. My approach includes a thorough examination of the current codebase, making necessary modifications to retain the existing layout while enhancing functionality. I am available for real-time communication based on your time zone and can provide a demo of the modified software within 12 hours of commencement. Q1: What specific modifications are you anticipating for the receipt layout? Q2: Do you have particular fields in mind that should be displayed during the selection process? Q3: Should the software allow for any additional student management features in the future? I look forward to your response. Best regards, Aril
$10 USD in 8 days
0.0
0.0

Hello, this is a focused desktop-app modification job, not a greenfield build, and the important part is preserving the current RP Gerador Financeiro receipt flow while removing manual entry. The real engineering risk is not SQLite itself but implementing the recurring lesson-date rule correctly inside the existing Delphi form logic without breaking receipt generation or print behavior. I’ve worked on production systems where business rules, data integrity, and operator speed matter more than flashy rebuilds. In a case like this, I usually treat the UI automation, database mapping, and date-generation logic as separate concerns so changes stay testable. The closest relevant work from my background is Dent-Cloud for recurring time-based automation logic, and DocIntel AI for structured data workflows that reduce manual handling while keeping the existing operational path intact. I would approach this by isolating student lookup behavior from the Referente generation rule, then validating the weekday-occurrence logic across edge months and future years before wiring it into the receipt screen. That is the part most likely to create silent billing errors if handled loosely. If useful, I can first sketch the date-generation logic and the student-selection flow against your current tables before any deeper code changes. Clifton
$20 USD in 7 days
0.0
0.0

Hello, I can modify your existing RP Gerador Financeiro (Delphi + SQLite) without rebuilding the system. I specialize in working with existing codebases and database-driven desktop applications. I will implement: Student selection from CLIENTES table (autocomplete, code, quick select) Auto-fill student details in receipts Support for up to 40 students Automatic lesson date generation with your 5th weekday skip rule Auto-generation of “Referente” field Keep your current receipt layout unchanged I can start immediately and deliver within 7 days. I will ensure everything integrates smoothly with your existing software. Looking forward to working with you.
$20 USD in 7 days
0.0
0.0

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