Mobile application iOS/Android
I am looking for a mobile application developer (iOS and/or Android) to create a training application for beginners and intermediate users. The application should help users with planning workouts, monitoring progress, and motivating them to engage in regular physical activity.
Main functionalities:✅ Individual training plans (exercise selection based on goals: strength, endurance, mass, etc.) ✅ Progression system (increasing load as the user progresses) ✅ Integration with Apple Health / Google Fit / Wear OS (automatic activity logging) ✅ Statistics and progress visualization (charts, training calendar) ✅ Motivational notifications and challenges (e.g., "3 workouts a week = unlock a new plan") ✅ Offline mode (access to plans without internet) ✅ Simple admin panel (for me – adding/editing training plans)
🛠️ Technologies and requirements
- Platforms: iOS (Swift) and/or Android (Kotlin/Java) – preferred cross-platform (Flutter/React Native) due to cost.
- Backend: Optional (if the application requires storing user data) – Firebase, Node.js, or another (to be agreed upon).
- API: Integration with Apple Health, Google Fit, Strava (if possible).
- Testing: Testing on real devices (iOS/Android) before release.
- Documentation: Code must be readable and well-commented (important for future updates).
Additional preferences:
- Experience in creating fitness/wellness applications or similar (e.g., dietary, meditation).
- Knowledge of Flutter or React Native – preferred but not necessary (native solutions can be considered).
- Ability to work with external APIs (e.g., for integration with wearable devices).
🤝 Collaboration model (60/40)
I will handle: ✔ Marketing (user acquisition through social media, SEO, collaboration with influencers, etc.) ✔ Sales and monetization (we plan a premium subscription model + possibly ads) ✔ User support (customer service, collecting feedback) ✔ Purchasing domain, hosting, and marketing tools
You will receive: ✅ 40% share of the net profits of the application ✅ Opportunity to add the project to your portfolio (with a link to the App Store/Google Play). ✅ Participation in discussions regarding the development of the application (ability to influence functionalities). ✅ Technical support for 6 months after release (minor fixes and updates).
Collaboration conditions:
- Written agreement (I will prepare a template, but collaboration with a lawyer is welcome).
- Deadline: 3–6 months (depending on the scope).
🎯 Expectations from you
- Experience in creating mobile applications (portfolio or links to previously completed projects are welcome).
- Communication – regular updates on work progress (e.g., every 2 weeks).
- Proactivity – ability to propose technical solutions.
- Availability – ability to respond quickly to potential issues.
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21 days3965 USD21 days3965 USD
Good morning - with such a scope, I wouldn't treat this as a task for 75 PLN or as work solely for profit sharing. Realistically, I propose starting with a paid project phase for 15,000 PLN in 21 days - architecture, MVP scope, key screen mockups, data model, choice of Flutter or React Native, integration risks with Apple Health, Google Fit, Wear OS, and Strava.
After this phase, we can calculate the actual cost of app production. Based on experience with similar systems, I would say that the MVP of such an application is rather in the range of 90,000-180,000 PLN, depending on how much automation, subscriptions, panels, and integrations are to be included in the first version. A 40% share in profits can be discussed as an addition, but not as a substitute for the development budget - otherwise, the project usually dies at the stage of good intentions =/
Technically, I see it like this - first the core of workouts, progression, calendar, statistics, and offline, then health integrations and the admin panel. Cross-platform makes sense, rather Flutter or React Native, but the decision should be made after checking the requirements for Apple Health and Google Fit. Peak performance requires a warm-up - it's similar with the product.
Two questions, to avoid shooting with cannons into the fog:
> Is it necessary to have Apple Health, Google Fit, Wear OS, and Strava simultaneously in the first version, or can we choose 1-2 integrations for the MVP?
> Should training plans be added manually through the panel only, or should the app create a plan based on the user's goal, level, and history?
…
Similar experience:
> https://business.ingello.com/lita - medical system, similar level of data sensitivity and user processes
> https://business.ingello.com/evrika - healthtech and digitization of processes around the user
> https://business.ingello.com/vorfahr - product with automation and platform logic, close to the MVP approach
More about us - https://systems-fl.ingello.com
On my side, in the first phase, I will take care of architecture, scope, prototype, and technical decisions. From you, I will need examples of training plans, progression rules, priorities for the MVP, and a decision on whether monetization should start from the first version or after market validation.
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1 day20 USD1 day20 USD
Good morning! A training application with plans, progression, and integration with Apple Health / Google Fit is an interesting challenge — especially the part with visualizing progress and the management panel for plans. I do such things cross-platform on Flutter/React Native with a backend on Firebase or Node.js, so I can handle everything along with offline mode and notifications. I would be happy to discuss the details and collaboration model in a private message.
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5 days20 USD5 days20 USD
Hello!
My name is Evgeny, and I have been professionally developing mobile applications, websites, web services, and web applications for 7 years.
*The cost I indicated is for 1 hour of work. To provide a more detailed price, I would like to get in touch/call and discuss the details.
- You can review my portfolio, feedback, and awards in my profile.
Why should you choose me?
… - I have taken 1st and 2nd places in international championships and competitions in the IT field.
- I have verified video testimonials and letters of appreciation.
- I am always available, honest, and reasonable.
- I work under a contract.
- I lead my own development team.
I would be happy to talk to you in more detail about the project.
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5 days185 USD5 days185 USD
I can build a training application as a paid MVP: training plans, progression, statistics, offline mode, admin panel, and architecture for later integrations with Apple Health / Google Fit / Wear OS / Strava.
Do you already have confirmed demand: a waiting list, community, first users, consultation sales, or a paid subscription test, so that we don't build a full application for 3–6 months without certainty that the market will pay for it?
Budget and deadlines — in private messages after determining the scope of the MVP, monetization model, platforms, integrations, admin panel, offline requirements, and terms of cooperation regarding profit sharing.
Similar completed project: Ищу таргетолога для мобильного приложения (iOS / Android) — этап запуска и тестирования.
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5 days26 USD
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60 days4758 USD
868 14 0 60 days4758 USDGood morning, Kacper.
I wouldn’t consider this as a simple training application. The description includes three separate products: an iOS/Android app, an admin panel, and a layer for integration with health data. Therefore, a sensible start is the first paid stage of the MVP (Minimum Viable Product), rather than a full version in 3–6 months right away.
I suggest building the first version in Flutter:
- onboarding with user goals and skill level,
- exercise database and training plans,
- load progression,
- training calendar and training history,
… - basic progress charts,
- offline mode for saved plans,
- simple admin panel for editing plans.
Integrations with Apple Health / Health Connect / Strava I would add in stages after closing the first version. Google Fit is not a good direction for a new product because its API (Application Programming Interface) is being deprecated. With health data, it is also necessary from the beginning to separate analytics, advertising, and user data to avoid blocking publication in stores.
I can consider a 60/40 model, but only after establishing rights to the code, the method of calculating net profit, obligations after publication, and proof that there is demand for the application. The mere promise of future profit does not replace the development budget.
To start, I have 3 questions:
1. Are the exercises, plans, and progression rules already prepared?
2. Is there a screen design, or are we starting from UX (User Experience) from scratch?
3. Is the 40% share meant to be an addition to the remuneration, or a substitute for the budget?
The amount and deadline in the offer refer to the first stage of the MVP.
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10 days264 USD
2580 53 0 1 10 days264 USDGood morning.
I have experience in creating mobile applications for Android/iOS, including backend, Firebase, APIs, and admin panels. The project looks interesting, but the scope is large, so it would make sense to start with an MVP and then develop additional features.
We can discuss the 60/40 model, but first, I would like to understand the terms of cooperation in detail and establish a realistic first stage.
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19 days264 USD
477 19 days264 USDGood morning!
I am interested in collaborating on the creation of a training application. I would propose implementation in React Native / Expo, as it allows for quicker preparation of a single application that works on both iOS and Android, reduces development costs, and makes it easier to develop the project in the future.
I see the project as an application with:
• individual training plans;
• load progression;
• training calendar;
• statistics and progress charts;
… • motivational notifications;
• offline mode;
• a simple admin panel for adding and editing plans;
• the possibility of later integration with Apple Health, Google Fit / Health Connect, Wear OS, or Strava.
From a technical standpoint, I propose:
• React Native + Expo;
• Firebase / Supabase as the backend;
• local data storage for offline mode;
• admin panel as a simple web application;
• architecture prepared for premium subscription and further scaling.
I can prepare the MVP in stages: first basic training plans, user profile, calendar, and saving progress, and then statistics, integrations, challenges, subscriptions, and more advanced personalization.
We can discuss a 60/40 model, but it will be important to establish the exact scope, responsibilities, rights to the code, billing principles, and post-publication support. I am open to a partnership collaboration if the project has a real promotion and monetization plan.
I live in Poland, so if needed, we can also talk on the phone and discuss the project details, MVP scope, and first steps more quickly.
I would love to learn more details and discuss a possible implementation plan.
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1 day264 USD
3418 11 1 1 day264 USDHello!
My name is Igor, I am the lead developer of a compact engineering team from Ukraine 🇺🇦. We specialize in creating high-load mobile applications and have experience specifically in the Health & Fitness / Booking systems field.
📐 Technical solutions tailored to requirements:
We offer development on React Native or Flutter.
This will allow us to create a single codebase for iOS and Android, saving up to 40% of the budget and time for development, while the application will operate at native speed.
An ideal choice for MVP would be Firebase or Supabase. They will provide instant synchronization of user data, secure authentication (Email, Google, Apple OAuth), and cloud storage for training plans.
We implement local data caching (via SQLite or internal Firestore persistence). Users will be able to see their plan and log sets even in basements without internet, and when the network is available, the data will automatically sync with the backend.
We will create a convenient adaptive web panel on React.js.
…
📱 Our experience and live applications in the App Store (Portfolio):
We know how to create complex logic, interactive charts, calendars, and work with personal data. Check out our releases:
Our portfolio: kisolid.com/en/portfolio 🌐
App 1 (Complex calendars, tracking, and booking logic): Doctor Plus in the App Store
App 2 (Premium interface and working with custom profiles): YouEver in the App Store
App 3 (Interactive mechanics and working with device data): BallBob in the App Store
🤝 Collaboration terms
Timeline: Ready to commit to 3–4 months until the full readiness of the MVP and publication.
We are ready to start soon. I suggest we have a call on Zoom/Google Meet to discuss the architecture and detail the workflow of the first version of the application together.
Best regards,
Igor and the KISOLID team
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120 days11 895 USD
196 120 days11 895 USDI practically have a similar solution ready for an application with plans, progress tracking, an admin panel, and AI modules, which can be quickly adapted and launched as an MVP.))
With this scope, 75 PLN is not a realistic budget for implementation; I would rather treat it as a symbolic budget for the announcement.
A complete MVP with a mobile application, admin panel, user database, statistics, payments/subscriptions, and health integrations I estimate from around 45,000 PLN and about 4 months of work.
As for technology - Flutter will be the best, Firebase or Node.js on the server side, a separate admin panel, and health integrations done in stages.
To start, I would include training plans, progression, a calendar, statistics, offline access for saved plans, and a content editing panel.
AI can be added sensibly - plan personalization, regularity analysis, user suggestions, and automatic motivational messages.
… I have 2 questions; without them, an accurate estimate will rather be pretending to be precise =)
- Is one mobile system enough for the first version, or should we use Flutter for both iOS and Android simultaneously?
- Are the exercises, plans, and progression rules already prepared content-wise, or do we also need to help arrange the product logic?
We have similar experience on our side:
- https://business.ingello.com/lita - healthtech and a system for working with users and medical processes
- https://business.ingello.com/rapport - application logic, reporting, and working with user data
- https://business.ingello.com/vorfahr - AI and automation in a product system
More about us and our approach to such systems - https://systems-fl.ingello.com
I am available, we can discuss the scope here on the platform and choose a reasonable first stage.
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1 day211 USD
172 1 1 1 day211 USDGood day. I am ready to complete this project as I have extensive experience in app development.
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1 day20 USD
1423 46 0 1 day20 USDHello!
I specialize in developing mobile applications for iOS and Android and can fully implement your project — from creating the architecture and designing the functionality to publishing the finished application.
I can fully implement the functionality, including:
- integration with Apple Health / Google Fit and workout tracking;
- progress charts, activity calendars, and push notifications;
- Firebase, data synchronization, and a full offline mode, so profiles, progress, and plans are accessible even without the internet.
…
Examples of my work:
- https://play.google.com/store/apps/details?id=counterstep.euroapp.live
- https://play.google.com/store/apps/details?id=com.nivustop.cleaner
- https://play.google.com/store/apps/details?id=com.utils.antivirustoolkit
I am ready to discuss the details and offer the best solution for implementing your project. I look forward to collaborating!
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7 days211 USD
1309 6 1 7 days211 USD❤️Hi, hope you are doing well
This fitness app needs a scalable cross-platform foundation, especially if you want iOS, Android, offline access, wearable integrations, progress tracking, and future subscription monetization.
I’d recommend Flutter or React Native with Firebase/Node.js backend depending on how much user data needs to sync. The app can include personalized training plans, load progression, Apple Health/Google Fit/Wear OS integration, statistics, charts, workout calendar, motivational notifications, challenges, offline plan access, and a simple admin panel for adding/editing plans.
I can also support testing on real devices, App Store/Google Play preparation, clean documented code, and future updates after launch.
Best regards,
… Youssef.
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1 day20 USD
288 1 day20 USDHello. A few months ago, I created a similar project for my portfolio. The application is built for Android and is already available for download. https://play.google.com/store/apps/details?id=com.dijin.fattality I used a gamified style to stand out from other similar applications, but I did not engage in marketing. If it serves as a good basis, we can discuss the details of further collaboration.
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20 days20 USD
1468 1 0 20 days20 USDHello! I am very interested in your project: I have experience in Flutter development, which is perfect for implementing your technical requirements considering cross-platform compatibility, integration with Apple Health/Google Fit, and creating a user-friendly admin panel. I appreciate your approach to the collaboration model and marketing strategy, so I am ready to discuss the details, the backend tech stack, and the development schedule so that we can meet significantly shorter deadlines.
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14 days20 USD
7123 53 0 14 days20 USDI have worked on similar fitness applications — the key is to properly structure the logic of training plans on the backend: load progression, history of sets/repetitions, reminder notifications. On the client side, it's important to create a convenient onboarding process tailored to the fitness level and a progress dashboard that truly motivates users to return. An MVP usually takes 6–8 weeks if the design is not delayed. Question: is there an existing design or wireframes, or are we starting from scratch? I am ready to discuss the scope and timeline.
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