Kotlin Android Billing Integration

@mrresearcher99

Hi there, I’ve reviewed your Android app requirements and would love to collaborate on your project. With 5+ years of experience in native Android development, I specialize in building high-performance, user-friendly apps with clean UI, optimized architecture (MVVM/MVI), and seamless API integration. I’ll start with a clear project roadmap, provide regular progress updates, and ensure the app is thoroughly tested for stability and performance before launch. Let’s connect to discuss your app idea in detail — I’m ready to bring your vision to life! Best, Bhargav Android Developer | Kotlin & Java Expert

@technologiesit

Being a Full Stack Developer and Digital Solutions Expert for over a decade, I have amassed the depth of experience your project calls for. My profound knowledge in Mobile App Development especially with Kotlin and my familiarity with Google Play Billing reassures you that I can dig into your codebase without interruption to complete the remaining 20% efficiently. Throughout my career, I've completed more than 100 successful projects, including payment integration and subscription models. By working on different tech stacks embracing AI solutions, e-commerce development, and API integrations, I developed the unique ability to see the bigger picture while aligning smaller components to meet expectations—all skills your project asks for. Moreover, as someone who values clear communication and offers long-term support alongside solutions, I assure you I won't just add value to your app by integrating Google Play Store Billing seamlessly but also by tightening animations, eliminating UI glitches, crashes, and adding concise documentation for ease of future maintenance. Working in Git on small pull requests well aligns with my emphasis on maintaining transparency and promoting collaborative developments.

@nadeemkhan7

Hi, Project is at 80 % completion in Kotlin and needs decisive delivery of Google Play Billing for one-time and subscription flows plus crash and UI cleanup. I recognize the requirement to work inside a mature codebase with sandbox/production verification, upgrade/downgrade handling, and tight PR cadence without losing velocity. I’ll integrate the latest Play Billing Library with real-time entitlements, acknowledgment, and server-side validation, then close critical and major Crashlytics issues via regression testing. Subscription UI, upgrade/downgrade logic, and instant status reflection will be hardened across devices. I’ll tighten animations, strip unused resources, and add a concise README so builds and sandbox tests are repeatable. With 10+ years shipping scalable Android apps in Kotlin and Java, plus deep backend/cloud integrations on Firebase and CI/CD, I can stabilize and polish this release quickly. Small, reviewable PRs keep transparency high and risk low while we lock down store submission. Lets connect in chat so that we discuss further. Regards, Mohd Nadeem Khan

@arshkumar213

Hi, I can help you complete your Kotlin Android app by finishing the Google Play Billing integration for one-time purchases and subscriptions, including proper acknowledgement, entitlement handling, and Play Console test setup.

@ammarahmed20

As an experienced Full Stack Developer with a specific expertise in mobile app development, I believe I'm the perfect fit for your Kotlin Android Billing Integration project. My commitment to clean, scalable, and reliable coding aligns perfectly with your commitment to streamlining the app appearance and payment process while ensuring no runtime bugs or crashes. With six plus years' experience working on both frontend and backend technologies, I am proficient in Android (Kotlin/Java) development as well as using REST & GraphQL APIs. These skills position me excellently for integrating Google Play Store Billing into your existing app and managing the subscription models flawlessly. Moreover, my command over version control systems like Git makes me comfortable with collaboration and ensuring progress transparency. I plan to approach this project by moving in small, reviewable pull requests so that we align with your processes and maintain steady forward momentum. Let's collaborate to turn the remaining 20% of your project into an impeccable polished release. Looking forward to working with you!

@codesaathi

Being an experienced Android developer with a strong command over Kotlin, I am confident that I can meet your needs exceptionally for the remaining 20% of your project. Not only do I dive into mature code-bases effortlessly, but I also ensure my presence adds value and enhances the momentum, developing processes that are efficient and promote constant progress. Working on Google Play Billing Library and its allied environments is one of my core strengths. I will proficiently integrate Google Play Store Billing for one-time purchases and subscriptions taking care of all acknowledgments and server-side verifications. In addition to this, I will sort out the UI glitches and Crashlytics-based crashes to create a seamless user-experience. Moreover, I would thoroughly execute the subscription models nuanced pricing structure and timely update user entitlements in real-time. My proficiency extends to cleaning up the codebase by revamping animations, removing redundant resources and proactively documenting any required information for smooth knowledge transfer to your next project contributor. Further justifying why you should entrust me with this project is my strong background in diligent use of Git and Pull request driven development to ensure transparency throughout the process. So if you value quality, clarity, and genuine results, let's team up to make your app as impeccable as it deserves to be.

@vertechsolutions

Hi, I can fix your Kotlin Android Billing Integration I've solved this exact problem many times. Here is what I will do: • Integrate Google Play Billing Library for one-time purchases and subscriptions with proper acknowledgement and server-side verification. • Fix reported Firebase Crashlytics crashes, UI glitches, and subscription flow edge cases in your Kotlin codebase. • Complete pricing, upgrade/downgrade logic, entitlement refresh, and add a short build & test README. 10 days free support after delivery Milestone-based payment Reply "YES" and Best regards, syed ribal

@guptakishan805

Having worked on a wide range of SaaS and web platform projects, I have a deep understanding of scalable architecture and API integration that would be valuable for your Kotlin Android Billing Integration. I'm confident in my ability to quickly comprehend your existing codebase and identify the key areas where I can make the most impact. Moreover, as someone who has helped numerous startups transition from MVP to fine-tuned products, I am well-versed in delivering on-time and ensuring clean documentation for easy future maintenance. Over the years, I've honed my Android development skills and kept up with the latest technologies including Google Play Billing Library – which has already been leveraged in multiple subscription-based platforms successfully. I'm familiar with not just integrating payments systems, but also handling backend verifications and acknowledgements to ensure a smooth customer experience. Committing to a collaborative approach using Git with clear communication and reviewable pull requests aligns perfectly with how I work. Let's eliminate those UI glitches, crashes, tighten up those animations, and document the codebase concisely, turning that 80% completeness into a polished, releasable product together.

@warrick1718

This aligns perfectly with my skill set, especially working with Kotlin and Google Play Billing integration in mature codebases. I understand the need for a clean, professional, and user-friendly app with seamless, automated subscription management and thorough bug resolution for a polished release. I offer expertise in Android development, payment gateway integration, and UI polish. While I am new to freelancer, I have tons of experience and have done other projects off site, focusing on scalable, maintainable code and documentation. I would love to chat more about your project! Regards, Warrick Van Eeden

@alluankit01

Hi, I can jump into your existing Kotlin Android codebase and complete the Google Play Billing integration without slowing the release down. I understand the app is already 80% complete, so the goal is not to rebuild anything. I’ll focus on the remaining launch blockers: Play Billing setup, one-time purchases, subscriptions, acknowledgement flow, entitlement updates, pricing screen, upgrade/downgrade handling, and server-side verification if your backend is ready for it. I’ll also review the Firebase Crashlytics issues, fix the reported crashes, clean up UI glitches, remove unused resources, and polish small UX details so the app feels release-ready. All work can be done through small Git pull requests so you can review progress clearly. I have experience with Kotlin Android apps, Google Play Billing Library, sandbox testing, Play Console product setup, subscriptions, and release QA. I’ll also add a short README explaining how to build, test purchases, and verify subscription states. Best regards Ankit

@mubashir021

I understand the urgency of finalizing your Android app with a polished in-app purchase flow using Google Play Billing. With my extensive experience in Kotlin and a strong grasp of the Google Play Billing Library, I'm confident in jumping into your mature codebase without losing momentum. My approach will include seamless integration of payment processing for both one-time purchases and subscriptions, ensuring that all acknowledgements and server-side verifications are in place. I will address the existing UI glitches and crashes reported by Firebase Crashlytics, ensuring a smooth user experience. Additionally, I will refine the subscription models, tighten animations, and clean up the codebase to enhance overall performance. I prioritize clear communication and transparency, providing you with regular updates through small, reviewable pull requests. By the end of our collaboration, you will have a fully functional app with a comprehensive 'how to build & test' README. Let's bring your project to completion with excellence.

@byronw7

As a South African, I know what it is to work hard and succeed at anything you do and complete tasks at 100%. I’ve handled similar projects requiring clean design, smooth integration, and reliable performance. Your need for seamless Google Play Billing integration, polished subscription models, and thorough bug resolution aligns well with my focus on clean, professional, and user-friendly app experiences. I bring expertise in Kotlin development, Google Play Billing Library, and crash analysis with Firebase Crashlytics. While I am new to freelancer, I have tons of experience and have done other projects off site. I would love to chat more about your project! Regards, Byron Walbrugh

@uniqedeveloper

I’ve gone through your requirement carefully and I totally understand the stage you’re at—this last 20% is where stability, billing accuracy, and polish really matter. Jumping into a mature Kotlin codebase, especially around Google Play Billing, requires precision without disrupting existing flow. Recently, I worked on a subscription-based Kotlin app where I implemented Google Play Billing (v5), handled purchase acknowledgements, and added server-side validation to prevent fraud. The app had similar issues—Crashlytics-reported crashes and inconsistent entitlement sync—which I resolved by tightening lifecycle handling and improving purchase state listeners. I can help you finalize billing (one-time + subscriptions), stabilize crashes, refine upgrade/downgrade logic, and clean up UI/animations while keeping PRs small and reviewable. A few quick questions: 1. Do you already have a backend in place for purchase verification, or should I help set that up? 2. Are subscriptions using base plans & offers (new Play Console model)? 3. Any known edge cases already identified in Crashlytics that need priority? Let me know when you’re available to discuss this further I’d be happy to walk you through my approach or showcase examples relevant to this project. Looking forward to hearing from you! Best regards, Mulayam