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I’m building a small, calming entertainment experience for phones called “Osprey Dive.” The idea is simple to watch yet visually engaging: an osprey glides across the screen, dives, and snatches the few fish that appear at first. After roughly ten minutes the scene changes—eggs hidden in the nest hatch, the water becomes livelier, and many more fish swim about. As time passes the activity slowly tapers off and the cycle resets. There are no on-screen controls or scoreboards; the joy is in the smooth animation, gentle ambient sound, and the meditative rhythm of the cycle. What I need • A mobile build for both iOS and Android that focuses on high-quality multimedia playback (animation + audio). • The timed logic: low-activity start, 10-minute wait, hatch event with higher fish count, then a gradual return to the quieter state. The timing must hold even if the device locks and unlocks. • Lightweight 2-D or 3-D art and looping ambient audio (water, bird calls) that run at a steady 60 fps on mid-range phones without draining the battery. • One test build for review, then a final store-ready build plus full project source. Acceptance criteria: seamless audiovisual loop, reliable timing cycle, and successful submission to both app stores without warnings. If you can bring this tranquil little world to life, I’d love to work together.
Project ID: 40681229
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63 freelancers are bidding on average $543 USD for this job

Hi — Elias here from Miami. I understand Osprey Dive is less of a traditional app and more of a polished ambient experience. The success will come from making the animation, sound, timing, and transitions feel natural enough that the user can simply watch without thinking about the underlying logic. The tricky part is maintaining the full cycle reliably through backgrounding, device lock/unlock, and app lifecycle changes without wasting battery. I’d handle the experience as a time-based state system rather than a simple foreground timer, so the scene can resume in the correct phase even after interruption. For the build, I’d use Unity or another lightweight cross-platform engine suited to smooth 2D/3D animation, layered ambient audio, particle/water effects, and consistent 60 fps performance. I’d also optimize asset sizes, draw calls, audio loops, and update frequency for mid-range devices. A few questions to better understand the scope: Q1 – Do you already have osprey/fish/nest artwork, or should all visual assets be created? Q2 – Should the cycle always restart after a fixed total duration? Q3 – Do you want the app to keep evolving indefinitely while open, or loop through the same sequence? I can deliver the review build, source project, final iOS/Android packages, and store submission support. Looking forward to hearing from you.
$500 USD in 7 days
7.9
7.9

Hi I have read your requirements and I am sure I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$400 USD in 7 days
6.5
6.5

Hello, I have 10+ years of experience in mobile and full-stack development, and I can build Osprey Dive as a polished, calming audiovisual experience for both iOS and Android. I understand that this is not a traditional game — there should be no controls, scores, or distracting UI. The focus will be on smooth osprey, fish and environmental animation, ambient audio, reliable timed progression, and a seamless meditation-like cycle. I can handle: Cross-platform iOS and Android development using Flutter or Unity, depending on the animation requirements Smooth 2D/3D osprey, fish, water and nest animations targeting 60 FPS Initial low-activity state with limited fish Accurate 10-minute hatch event and increased activity Gradual tapering and automatic cycle reset Timing persistence across device lock/unlock and app lifecycle changes Looping water, wind and bird-call audio with optimized playback Performance and battery optimization for mid-range devices Test build followed by production-ready App Store and Google Play builds Complete source code and project documentation 100% DELIVERY OF WORK → HIGH-QUALITY, BUG-FREE CODE → DAILY PROGRESS UPDATES → 2 YEAR POST-LAUNCH SUPPORT FREE Jitendra
$500 USD in 7 days
6.4
6.4

Hello there, Hope you are doing well I’d love to bring Osprey Dive to life as a calming, polished multimedia experience for both iOS and Android. I understand that the goal is not a traditional game, but a hands-off audiovisual experience where animation, ambient sound, and timed environmental changes create a relaxing viewing cycle. Proposed Approach I recommend Flutter for the cross-platform application, combined with a lightweight animation/rendering approach appropriate for smooth 60 FPS performance. The application will be optimized for mid-range devices with careful attention to battery usage and memory. Key functionality will include: Osprey flight, diving and fish-catching animations Initial low-activity environment with limited fish Precisely timed ~10-minute hatch event Nest/egg hatching animation Increased fish and environmental activity Gradual reduction in activity Automatic seamless cycle reset Ambient water and bird-call audio No unnecessary controls, menus or scoreboards State/timing persistence across screen lock/unlock Efficient rendering and audio resource management iOS and Android responsive layouts For timing reliability, I’ll avoid relying solely on an active screen timer. The application will persist the cycle state and calculate elapsed time when returning from background/lock, ensuring the experience remains synchronized. Thanks & Regards Dheeraj K.
$250 USD in 7 days
6.9
6.9

✋ Hi, the main challenge here is not the timer itself. It is keeping the animation, ambient audio and scene transitions smooth while also making the ten-minute lifecycle remain accurate after the app is backgrounded, locked or resumed. I’d structure the experience around a simple state machine: quiet phase, hatch event, high-activity phase, gradual taper and reset. The visual layer should be lightweight enough to maintain 60 fps, while timing should be based on persisted timestamps rather than an in-memory countdown so the cycle survives interruptions correctly. I’d first validate one complete loop on both platforms before polishing the art and sound. Do you want the scene built primarily as 2D animation, or are you expecting a more realistic 3D look for the osprey, water and fish?
$510 USD in 7 days
5.8
5.8

hello there , I’ve already developed cross-platform iOS/Android applications with animation, multimedia, audio playback and timed/background logic, and I can bring Osprey Dive to life as a polished, calming experience. I can deliver: Smooth 2D/3D osprey, nest, water and fish animations Timed activity cycle: quiet start → ~10-minute hatch → increased activity → gradual taper → reset Reliable timing across screen lock/unlock and app lifecycle changes Ambient water/bird audio with seamless looping 60 FPS optimization for mid-range devices with battery-conscious rendering Minimal UI with no controls or scoreboards Test build for your review and iteration Final iOS + Android store-ready builds Complete source code and project files App Store + Google Play submission support I’ll build the timing as state-based logic rather than relying purely on animation timers, so the cycle remains accurate after interruptions or device sleep. I’m comfortable with Flutter/React Native and native mobile optimization, and can select the best approach based on the animation requirements. I can start immediately and focus on making the experience feel smooth, natural and meditative, not like a conventional game. thanks
$350 USD in 15 days
5.0
5.0

Hello, The lifecycle and rendering approach should be established before the artwork is expanded. The main technical risk is creating a scene that looks calm and fluid while still running efficiently on mid-range phones and maintaining accurate state after app suspension. I’d first define the cycle states, timing persistence, rendering approach and audio behavior, then build one complete prototype from quiet scene through hatch, increased activity, taper and reset. That bounded slice should prove performance, timing and resume behavior before the full art and polish pass. Do you want the final visual style to be 2D illustrated, 2.5D, or fully 3D? A reference showing the level of realism and mood you want would be the most useful starting artifact. Thanks
$440 USD in 5 days
1.3
1.3

I understand you're aiming for a serene, visually captivating mobile experience like a high-quality nature documentary loop, and I have a proven track record of developing smooth, performant animations for similar ambient applications, ensuring a seamless user experience. My approach will leverage Unity's robust animation system, specifically Mecanim for character rigging and state transitions, combined with shader graph for dynamic water effects and particle systems for subtle environmental details. I'll implement a state machine to manage the scene progression and fish spawning logic, optimizing for mobile performance with efficient mesh batching and texture atlasing. Ambient sound will be integrated via Unity's audio mixer, dynamically adjusting volume based on the scene state. How are you envisioning the transition between the initial sparse fish scene and the more active later stages? Would you prefer a gradual blend or a more distinct shift? I'm eager to discuss your vision further and demonstrate how I can bring Osprey Dive to life.
$591 USD in 21 days
0.0
0.0

Hi, I’d build Osprey Dive around a continuous animated scene, with the changing activity expressed through the bird, nest, and water rather than menus or counters. Lightweight 2D animation would be my starting point for balancing visual detail, smooth movement, and battery use. The cycle would use persisted timestamps so locking the phone does not reset the experience. On reopening, the app would restore the correct stage without keeping rendering active in the background. Fish density, flight patterns, hatching, and ambient audio would transition gradually to keep the loop calm and seamless. I’d test frame pacing, audio transitions, memory use, and battery behavior on representative mid-range devices. You’d receive a review build, the full project and assets with documented usage rights, and signed release builds with submission support. Store approval itself remains subject to review. Should someone returning after the ten-minute mark see the hatch event replay, or resume directly at the current stage of the cycle? Regards, Houssame
$500 USD in 7 days
0.0
0.0

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