Backend Developer / FlutterFlow (Database Integration, Audio, RevenueCat) for Ready UI
Hello! I am looking for a developer to connect the backend and set up the logic in the MVP mobile application for meditation.
What is already ready on my side:
The visual part (UI) is being completed and assembled in FlutterFlow - 15 screens
Basic navigation between screens is set up.
Visual states are configured (toggles, checkboxes, card expansion animations).
A detailed technical specification for the application's logic is ready, described by screens, and if needed, there is a technical specification for the database architecture.
I will provide a link to the Preview and access to the project in FlutterFlow (View Only) for evaluation.
What you need to do (Backend + Logic):
Deploy and connect the database (Firebase, Supabase, or Xano — your choice).
Set up authorization/registration (Apple, Google, Email/Password).
Set up the logic for "Strikes" (counting days of continuous meditation and automatically unlocking bonus tracks on the 7th, 12th, 21st, and 28th days).
Connect the audio player to the files from the database.
Integrate monetization (RevenueCat: annual/monthly subscriptions + IAP packages forever).
Set up the logic for content access (lock on paid tracks if there is no subscription).
I am looking for a specialist who can quickly and cleanly "bring to life" the ready interface. I am waiting for your approximate estimate on the timeline and cost of implementing this functionality after exchanging additional files from me with descriptions in private messages.
Client's review of cooperation with Vyacheslav Filimonenko
Backend Developer / FlutterFlow (Database Integration, Audio, RevenueCat) for Ready UIThe work was transparent, clean, easy, and structured communication. We developed Front and Back applications for meditations. A big thank you for the attention to detail. I will reach out again!
Freelancer's review of cooperation with Alina Kayan
Backend Developer / FlutterFlow (Database Integration, Audio, RevenueCat) for Ready UIGreat client, accommodating. There were some minor communication issues, but we always found common ground. We continue to collaborate.
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12 days19 750 USD12 days19 750 USD
I will connect the backend to your FlutterFlow project. Firebase + Auth (Apple, Google, Email), strike logic through Cloud Functions with automatic opening of bonus tracks, audio from Storage, RevenueCat for subscriptions and IAP packages. I can start immediately after gaining access to the project. One question: are the audio files already available or will an admin panel be needed for uploading?
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14 days350 USD
981 6 3 14 days350 USDGood day, ready to cooperate. We discussed in private messages, I hope for collaboration. Have a nice day.
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7 days700 USD
874 6 0 7 days700 USDHello!
I have been working with FlutterFlow and Firebase for over 2 years. I reviewed your task list and am ready to implement the technical part of the MVP.
My estimate for pure development time:
Authorization (Apple, Google, Email/Password): Setting up Firebase Auth, configuration in the consoles, and linking with existing screens — 4–6 hours.
"Strikes" Logic: Setting up Firestore (user activity fields), creating the logic for daily increments and conditions for unlocking bonus tracks — 6–8 hours.
…
Audio Player: Linking the URL from the database to the player widget, setting up playback states and playlist management — 3–5 hours.
Monetization (RevenueCat): Setting up products (month/year/forever), logic for checking access rights (locks on tracks), and handling transactions — 6–8 hours.
Final Debugging: Checking the connection between the UI and backend on all 15 screens and testing purchases — 4–6 hours.
Total: Approximately 25–35 working hours to launch all the logic.
I am ready to review your project in Preview mode and the technical specifications for final confirmation of deadlines and costs.
Best regards,
Vladislav
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15 days2500 USD
12862 4 2 15 days2500 USDHello,
Your project looks well-prepared, and that makes a big difference for a clean MVP launch. With the UI already built in FlutterFlow and a clear technical specification in place, the focus can go directly into backend setup and solid logic implementation.
I’ve worked with FlutterFlow together with Firebase and Supabase, handling authentication, streak systems, audio integration, and subscription flows using RevenueCat. The strikes logic, content locking, and smooth connection between UI and backend can be implemented in a reliable and scalable way.
The goal would be to keep everything simple, fast, and stable while making sure the app is ready for future growth. After reviewing your preview and technical details, I can provide a clear timeline and cost estimate, but for an MVP like this it typically falls within two to three weeks.
Happy to review the project access and discuss the next steps.
…
Best regards,
Jeo Vincent Carretas
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20 days800 USD
2964 14 0 20 days800 USDGood day.
I propose to develop a custom backend on Node.js with a PostgreSQL database instead of Firebase. This will allow for more flexible implementation of the strike logic and reliably link subscriptions through RevenueCat webhooks. I will write an API for your FlutterFlow, set up authorization, and secure audio delivery. We will discuss the timelines and costs in private messages after reviewing additional files.
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10 days1000 USD
232 10 days1000 USDI was working on Poseidon (https://poseidon.codezerogroup.com) — an enterprise platform with Python computational logic and REST API — the same scheme: backend API + business logic + frontend.
FlutterFlow + Supabase is a proven stack for such MVPs — I bring the ready UI to life without rewriting. A few things worth addressing right away: the streak logic must be independent of the user's time zone (otherwise the streak resets due to time change), background audio requires separate configuration of play/pause/seek states to work stably. Both fall within the standard scope.
What I will do:
- Supabase database (or Firebase / Xano — to be agreed upon after reviewing TZ)
- Apple, Google, Email/Password authentication
- Timezone-safe streak logic — continuous days counter, auto-unlocking tracks (day 7, 12, 21, 28)
- Audio player connected to files from the database, background playback with state support
… - RevenueCat integration: annual/monthly subscription + forever IAP packages
- Content access logic (lock on paid tracks without subscription)
- Testing + documentation + handover
--- OPTIONS ---
A) Backend MVP — 1000 USD (10 days) — full scope from the brief: auth, database, streaks, audio, RevenueCat, content lock
B) Backend + support — 1600 USD (16 days) — like A + 30 days of support after launch, RevenueCat monitoring, 1 round of fixes — best scope/price ratio
C) Extended support — 2080 USD (21 days) — like B + 3 months of support, crash monitoring, 2 rounds of fixes
Completion time: 10 days from receiving access to the FlutterFlow project and TZ files.
Portfolio:
- https://poseidon.codezerogroup.com — Python backend, REST API, business logic
- https://nyxvx.com — Next.js, Epic Games MegaGrant
- https://ou-uv.com — Flask/Python CMS with API integration
8 years in Python backend — from simple REST APIs to enterprise computational platforms.
I would be happy to discuss the details — send access to FlutterFlow View Only. One question: are the audio files ready and will they go to the database, or do you also need a panel for uploading them by the admin?
P.S. Since I am new to the freelancehunt service and want to quickly gain a few initial projects for my portfolio, I am offering a 15% discount for the first 5 clients. The offer is valid until I receive 5 orders.
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1 day600 USD
1423 46 0 1 day600 USDHello!
I am ready to connect to your MVP and "bring" the interface to life.
From your description, everything looks well-prepared - this greatly speeds up development.
Here’s what I can offer from my side:
- I will select the optimal backend (most likely Firebase or Supabase, depending on the logic and scaling)
- I will quickly set up authorization (Google / Apple / Email)
- I will implement a strike system (taking into account edge cases: misses, timezone, protection against manipulation)
… - I will set up an audio player with streaming from the database/storage
- I will integrate RevenueCat (subscriptions + one-time purchases)
- I will create a correct access system (paywall, unlocks, subscription verification)
- I will optimize the logic so that everything works stably and without lags.
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1 day100 USD
265 1 day100 USDHello!
I have extensive experience in launching MVP mobile applications with a ready-made UI, including backend integration, authorization, access logic, subscriptions, and media handling. For such a project, it is possible to quickly and cleanly connect FlutterFlow with Firebase or Supabase, set up authentication through Apple / Google / Email, implement strike logic, unlock bonus content, connect audio, and monetize through RevenueCat.
I suggest moving to private messages for a more detailed discussion of the technical specifications, deadlines, and costs.
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2 days1000 USD
576 1 0 2 days1000 USDGood day, I am interested in your project.
I will connect the backend (Firebase/Supabase), authorization, audio, strike logic, and subscriptions through RevenueCat.
I have done similar integrations - I will assemble everything stably and without workarounds.
We will discuss the details.
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1 day1000 USD
95312 1270 1 10 1 day1000 USDHello. I have been working with Node.js for over 8 years. I am ready for collaboration!
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5 days999 USD
172 1 1 5 days999 USDHello! I am ready to complete this project and have extensive experience in developing various applications.
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10 days1300 USD
3469 11 1 10 days1300 USDHello!
I work excellently with the FlutterFlow + Firebase/Supabase combination, and I also have practical experience integrating audio players, custom logic (like your "strikes"), and RevenueCat for setting up paywalls and subscriptions.
My portfolio:Freelancehunt
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7 days500 USD
10038 117 0 7 days500 USDHello.
I am a NodeJS developer. I am ready to take on the task. Write to me, we will discuss.
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5 days2000 USD
1182 13 0 3 5 days2000 USDHello! My partner (designer + full-stack) and I have been specializing in mobile application development and complex fintech solutions for over 4 years, so we will professionally "bring to life" your MVP for meditation by transforming the ready layout in FlutterFlow into a functional product. We will develop the architecture based on Firebase (perfect for FlutterFlow), set up the "strike" logic through Cloud Functions, and integrate RevenueCat for stable monetization. Our experience in development is 4 years; take a look at our work in terms of technical stability and interface smoothness: hyperfi.tech, espressolab.com.ua, hudi.com.ua. We will professionally connect the audio player, implement a content access system (Paywall), and guarantee the technical perfection of executing the logic of bonus tracks. Our 4 years of experience is confirmed by successful cases of developing scalable subscription services.
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3 days1200 USD
184 3 days1200 USDGood day! My colleague and I have been professionally engaged in technical development on Flutter and backend service integration (Supabase/Firebase) for over 4 years, so we will help your meditation application achieve reliable logic and secure authorization. We will implement the backend part, paying special attention to the system for counting days of continuous practice and automatic content unlocking. Our 4 years of experience is confirmed by projects drkukharevich.rivne.ua, crave-agency.com.ua, jk-solution.com.ua, where we have already implemented complex gamification scenarios and payments through Apple/Google. We will ensure technical excellence in execution, set up RevenueCat for managing subscriptions, and deliver to you a fully tested application ready for publication in the Store. We work reliably and with a focus on database speed, so that audio loads instantly.
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10 days2200 USD
976 4 0 10 days2200 USDGood day
My name is Dmytro, from King Kong Lab
We can connect and "revive" your MVP — we specialize in tasks like this, where the UI is already there and we need to properly connect the backend and logic
From your description, the task is clear
What we will do
we will set up and connect the database (I would recommend Supabase or Firebase for your case)
we will configure authorization (Google / Apple / email)
we will implement the strike logic (days + bonus openings 7 / 12 / 21 / 28)
we will connect the audio player to the content
… we will integrate monetization through RevenueCat (subscriptions + IAP)
we will set up access to the content (free / paid, track blocking)
We will do it purely based on logic and structure, so that the product can be properly scaled later
Regarding timelines
approximately 7–14 days
We can take a look at your FlutterFlow project and after that provide an accurate estimate
We are ready to quickly get to work 👍
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3 days1000 USD
5011 41 4 1 3 days1000 USDHello! I am ready to connect the backend for your meditation app on FlutterFlow. I have experience with Firebase/Supabase, setting up authorization, content logic, integrating RevenueCat and audio. I will quickly and cleanly "bring to life" the ready UI. Let's discuss the details, deadlines, and cost in private messages.
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1 day25 USD
11616 44 0 1 day25 USDHello, I have experience deploying backend on NF server and working with RevenueCat.
Message me privately, we will discuss the details.
I will be happy to help you!
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