Health and fitness app development services
From fitness platforms and step counters to running and cycling trackers, gym programmes, and personal training apps, the market is as dynamic as it is competitive. Success depends not only on functionality or sleek visuals but on experiences that perform flawlessly, adapt intelligently, and inspire lasting engagement.
With our fitness app development services, you get intuitive, modern health and fitness mobile apps powered by AI and built to bring you complete peace of mind through seamless delivery, effortless management, and impeccable performance.
About Vention
years delivering bespoke healthcare applications
Clients supported on their growth journey
Months average client engagement
Weeks from first contact to kick off
Protecting customer data with ISO 27001-backed internal frameworks
Expertise in AI and computer vision, VR, IoT, and wearables, fuelling innovation in fitness apps
UK-based CTO and engagement managers, ensuring technical oversight and a seamless client experience
Hear from our expert
Working with Vention, you get both a professional software development vendor and a reliable partner who is invested in your success and helps you navigate the competitive fitness app market.
Our focus is always on your goals, whether you’re a fitness startup racing to launch your first app with limited resources or an established brand looking to integrate new digital features into your existing platforms.
And with our London team on the ground, we work side by side with you, from running discovery workshops in person to providing hands-on support throughout the entire journey.”
Jovi Francis
Senior Business Development Manager in
the UK at Vention
Our fitness application development services
Consulting and advisory services
Launching a fitness app can feel as challenging as beginning a new workout, but with a clear plan in place, the journey becomes far more manageable.
Our team offers professional consulting and product discovery services to help you establish a solid foundation before writing the first line of code. We work with you to define and validate your app concept, assess fitness app development costs, and select the right technologies, giving you the peace of mind for the upcoming engineering process.
Fitness app development services
Forget the stress of shifting requirements, stakeholder misalignment, slipping deadlines, or the lack of skilled developers. Our team takes responsibility for your project delivery from a blank sheet to a successful launch. The result is a fitness app that performs flawlessly, scales seamlessly, and meets both your expectations and the needs of your market.
AI enablement
With an AI-first approach, we help businesses adopt AI solutions that deliver real-world value to their customers. From a simple AI discovery workshop to full-scale implementation of AI features, our team knows how to make innovative tech improve operational efficiency, increase personalisation, and drive revenue.
Support and maintenance
As your user base grows, maintaining reliability, security, and performance becomes essential. Our team provides ongoing monitoring, issue resolution, and regular updates to ensure your bespoke fitness app remains reliable, secure, and scalable. With Vention managing the technology and AI capabilities behind the scenes, you can focus fully on your clients, knowing their experience stays seamless every time.
Success stories
What our clients say
I am a co-founder of a keto diet company … We wanted to rebuild and expand our existing Android app to be on both iOS and Android and add a huge number of features. We decided to work with Vention due to how competent their team was throughout our meetings, as well as the overall assessed cost for our project.
We launched the new version of the app after about 6 months on both iOS and Android. The new app was a huge success and had optimized performance speed and quality compared to the original Android app (even though that one was fully native). We're very happy with the team and final results of the app (we had ongoing development for 3 years). Their (Vention’s) mobile app development skills were very high level. There wasn't a problem they couldn't solve.”
Co-Founder at Tasteaholics, Inc.
What our clients say
They listened to our needs not just on the technical side but also in terms of personality and approach to work.
Besides someone with great technical skills, we needed engineers who could be active in discussions, contribute to planning and great in communication, and that’s exactly what we got from Vention.”
Department Lead at Urban
What our clients say
We mainly used Vention for Design, Node.js, iOS Swift, Test automation, DevOps to improve different areas of the products and launching new features. Not only they were highly skilled professionals in their own domain, but also they have good communication skills.
They were very engaging and proactively listening for feedbacks and improve ways of working. They are very honest and constructive and provided invaluable feedback to us as well.
We have successfully launched the integration projects and product features to increase conversion rate and captured wider markets. It results in a good retention rate in our user base and increased our clients' satisfactions.”
CTO at Healthera
Let’s turn your idea into what everyone talks about next
From first concept to full-scale launch, we’ll make every step feel effortless.
We build fitness applications tailored to the needs of today and tomorrow
From regular users, trainers, and personal coaches to dietitians and gym admins, fitness applications can be built around a wide variety of goals, activities, and audiences. Success comes from creating intuitive, data-driven solutions that adapt intelligently to every user while staying seamless to operate and maintain.
Gym and studio apps
About 12 million people in the UK hold gym memberships, and mobile apps have become integral to how they join, train, and stay connected.
As a fitness app development company, we design solutions that help studios and gym chains manage memberships efficiently, streamline day-to-day operations, and provide clients with an engaging experience that fosters loyalty.
Key features:
- Membership management
- Fitness class calendars
- Class booking and online check-ins
- Supporting content with exercises or additional info about classes
On-demand workout apps
The popularity of on-demand fitness continues to grow, providing users with the flexibility to train at their own schedule while maintaining a sense of community. Our engineers create streaming-based applications that combine dependable performance with intelligent functionality and seamless scalability, ensuring an engaging experience for every user.
Key features:
- Video workout libraries
- Training plan builder and progress tracking
- In-app payments and subscription management
- In-app fitness community features
- Progress performance and analytics
Personal trainer apps
Transforming the experience of working one-to-one with a fitness coach into a digital format.
We help coaches move away from long spreadsheets and deliver training plans, monitor progress, and stay connected with their clients through branded mobile apps that offer personalisation and in-depth analysis of each client's performance.
Key features:
- Workout creation, scheduling, and management
- Training live streaming
- 1:1 chats with the coach
- Personal goal and progress tracking
- Meal planning and logging
Nutrition and diet apps
Whether as standalone solutions or as part of a broader fitness and wellness ecosystem, nutrition apps help millions of people manage their weight and maintain healthier lifestyles.
At Vention, we design applications for smart nutrition management that empower users to follow balanced diets, track their progress, and stay motivated in achieving their goals.
Key features:
- Personalised meal plans
- Calorie tracking and nutritional analysis
- Recipe and meal suggestions
- Shopping lists and grocery planning
- Integration with fitness apps and platforms
- Meal and vitamin intake reminders
Mental health and wellness apps
A healthy mind is essential to long-term wellbeing. Mindfulness and wellness apps help users reduce stress, improve focus, and build everyday resilience through guided, supportive experiences.
Our team develops solutions that combine behavioural insights, smart personalisation, and seamless functionality to meet diverse user needs and provide calm, clarity, and connection at any moment.
Key features:
- Guided meditations and breathing exercises
- Habit and mood tracking
- Yoga exercises
- Sleep cycle routine tracking and smart alarms
- Stress management exercises
All-in-one fitness, nutrition, and wellness apps
For many, convenience is key. All-in-one fitness apps bring together workouts, nutrition, and lifestyle features within a single platform, creating a seamless experience without the need to juggle multiple tools.
As a health and fitness app development company, we build scalable, flexible, and user-focused high-performance mobile apps that help individuals easily balance workouts, diet, stress, and recovery.
Key features:
- On-demand classes and training programmes
- Personalised training plans
- Food logging and calorie and hydration tracking
- Meal planning and recipes
- Guided meditations, breathing exercises, and stress-relief practices
- Habit and sleep tracking
- Personalised recommendations based on goals and performance
Pumping up your fitness app with AI-powered features
With our AI expertise and extensive project experience, our team designs and integrates intelligent features that add tangible value for you and your clients, ensuring seamless and reliable performance.
What it’s about
How it works
Smart workout recommendations
What it’s about
Delivering fresh and effective workouts that keep users motivated while preventing overtraining.
How it works
Machine learning models analyse workout history, biometric data such as heart rate or HRV, and personal goals to recommend the most relevant next workout.
Form detection and correction
What it’s about
Providing real-time personal trainer-like guidance to help beginners build confidence and reduce the risk of injury.
How it works
Computer vision models use smartphone cameras or wearables to detect body landmarks, and then the system compares movements against correct form templates to flag deviations.
Food recognition
What it’s about
Simplifying nutrition tracking by automating meal logging and helping users stay consistent with their habits.
How it works
Computer vision models trained on large sets of images spot products and meals in photos and then link them to nutrition databases to estimate their calorie value.
Personalised meal plans
What it’s about
Reducing drop-off rates by offering your clients practical and sustainable eating plans tailored to their lifestyles and goals.
How it works
AI algorithms consider factors like food preferences, allergies, budget, and nutrition goals, and as users log what they actually eat (or skip), the app learns and adjusts their plans to get closer to what works best for them.
Predictive nutrition insights
What it’s about
Detecting nutritional gaps early on and offering users proactive nutritional suggestions to prevent under- or overeating, accelerate weight loss or muscle gain, and improve nutritional balance.
How it works
AI algorithms take into account dietary restrictions, allergies, budgets, and goals. As users log their meals, the system learns from their behaviour and refines future recommendations to increase adherence and results.
Mood and stress detection
What it’s about
Offering users coping strategies before stress escalates by tracking and analysing mental health trends and delivering the “right” intervention at the right time.
How it works
AI analyses stress markers (like HRV or sleep disruptions) and NLP processes journal entries, conversations with the in-built app chatbot, or even voice tone (through sentiment analysis) to select appropriate meditations, breathwork, or relaxation practices.
AI-powered chatbot therapy
What it’s about
Empowering your mental health apps with AI chatbots that provide 24/7 support, thus reducing the stigma of seeking help and scaling mental health access.
How it works
Conversational AI trained on cognitive behavioural therapy principles engages users in meaningful dialogue, helping them process emotions, reframe negative thoughts, and access supportive tools like breathing techniques or journaling prompts.
Sleep optimisation
What it’s about
Helping your users improve sleep quality, enhance recovery, and boost overall well-being.
How it works
AI processes wearable sleep data (such as sleep duration, REM cycles, and disturbances) and cross-references lifestyle logs (like caffeine intake or exercise time) to create predictive models that suggest bedtime routines or habit changes.
A well-built solution always returns on investment: Key ROI value drivers
A fitness app that isn’t thoughtfully engineered can quickly turn into a cost centre, draining resources through customer churn, excessive support requests, and missed opportunities. At Vention, we build bespoke fitness app solutions with intuitive interfaces, scalable architectures, and engaging features that maximise ROI while delivering tangible value to your customers.
Recurring revenue
We design apps that strengthen your bottom line, with built-in subscription models, flexible membership tiers, and secure in-app purchases that make upgrades seamless.
User retention
Our solutions keep users engaged and motivated through gamified challenges, personalised workout plans, progress tracking, and timely reminders, helping users foster long-term habits.
Operational efficiency
From automated class bookings and secure payment processing to real-time notifications and schedule management, our apps streamline your operations and reduce overhead.
Brand loyalty
We build apps that elevate your brand, combining elegant design, intuitive navigation, personalised dashboards, and social features that encourage trust and advocacy.
Market expansion
With cloud-native infrastructures, multilingual support, and smooth onboarding, we help you confidently scale into new markets worldwide.
Get a clear picture of your fitness project investment
Use our project calculator: share your key requirements, and we’ll provide an estimate tailored to your needs.
A step-by-step roadmap for stress-free fitness app development
We simplify the software development process, where countless moving parts can make application delivery feel complex. However detailed your requirements are, our team guides you through every stage, ensuring a transparent, structured, and seamless experience that keeps you in complete control.
Discovery and analysis
Our team kicks off with discovery sessions to understand your fitness app concept, your business requirements, and the goals you want to achieve. From there, we define and prioritise technical requirements and provide a clear roadmap for the project.
Planning and architectural design
A well-structured yet flexible plan is critical to project success. We outline costs, timelines, deliverables, and resource needs at each stage, while leaving room to adapt as the project evolves.
At this stage, we also design the application’s architecture and select the optimal technology stack, balancing costs, time-to-market, and long-term maintainability.
UI/UX design
Our designers create interactive prototypes of your future application that are aligned with your brand identity. Using tools such as Sketch and Figma (including Figma AI for faster prototyping), we bring your concept to life with user-centred interfaces that are intuitive and engaging.
Development, integration, and testing
Scalability, security, efficiency, and maintainability are at the heart of our code. Iteration by iteration, our fitness app developers transform your concept into a full-scale product, while QA engineers validate every new feature across functionality, usability, performance, and security.
We also leverage AI tools such as GitHub Copilot to accelerate boilerplate coding and generate automated test scripts directly from user stories and requirements.
Launch and ongoing support
Drawing on DevOps best practices, we carefully roll out your solution to the production environment and launch the application for your users.
But our role doesn’t stop there. If required, we provide ongoing support, performance monitoring, troubleshooting, and upgrades to keep your application running securely and reliably as it scales.
Our engagement models
No two projects are the same. But whether it’s a sprint or a marathon, our engineers bring the kind of expertise that turns ambition into impact and keeps peace of mind built in.
When project requirements feel uncertain, our discovery workshops bring clarity and direction.. We validate your product idea and prepare everything required for a successful project launch, including an architecture plan, phased delivery roadmap, wireframes and prototypes, technical recommendations, risk assessments, and mitigation plans. You leave fully equipped for development, with a strategy tailored to your business goals.
Pod teams offer greater team autonomy and scalability, faster project delivery, less day-to-day management, and deep domain expertise. Our self-organised and experienced pod teams deliver your fitness app in iterations, ensuring consistent collaboration and updates along the way.
When deadlines are tight or skill gaps emerge, staff augmentation helps you quickly expand your team without hiring overhead. You can review and handpick the needed talents from our pool and scale instantly with top-tier, pre-vetted experts who start contributing right away.
For projects that demand faster delivery, higher efficiency, or specialised AI expertise, we also offer AI-enabled teams equipped with the tools and workflows that enhance productivity and deliver measurable performance gains.
For projects where speed and cost efficiency are paramount, we take full ownership of the delivery. Our team oversees the full development lifecycle, from requirements gathering and solution design to user onboarding and final launch. Throughout the process, we ensure alignment with your objectives and guarantee the highest quality of each deliverable.
Our tech stack for five-star fitness apps
The wrong tools hold you back and drive costs up. We draw on decades of engineering know-how to choose the perfect stack for your goals: reliable and ready to grow with you.
iOS
Swift
SwiftUI
SwiftData
ARKit
Objective-C
Core Data
HealthKit
Android
Kotlin
Java
Android Health Connect
Cross-platform
React Native
Flutter
.NET MAUI
UI/UX design
Design: Figma, Zeplin, Sketch, Adobe XD, Marvel, Balsamiq, Principle
Research: Maze, Miro, Hotjar, Google Analytics, Amplitude
Animation: Adobe After Effects, Cinema 4D, Blender, CapCut, Rive
QA and testing
Tools: Fiddle, Vysor, Reflector, Charles Proxy
Automation: Appium, Ranorex, Selendroid, Robotium, UI Automator, Detox, JMeter
Emulators: Android Virtual, XamarinXcode Simulators, Device, Genymotion
Reporting and distribution: Fabric, Firebase, TestFlig
Security
TLS/SSL
AES encryption
OAuth2
JSON Web Tokens
DevOps
Jenkins
Travis CI
CircleCI
Docker
Kubernetes
GitLab CI
GitHub Actions
Sentry
Amplitude
Innovative technologies
AI/ML
Computer vision
IoT
VR/AR
Related services you didn’t know you need
Fitness success rarely lives inside a single app. Growth comes when every digital touchpoint (mobile, web, data, and experience) works together to build lasting engagement and a clear picture of user behaviour.
At Vention, we design connected experiences that expand your app’s reach, elevate performance through intelligent tools, and bring peace of mind to every stage of delivery.
Advanced analytics
We implement powerful data analytics and custom reporting tools that deliver a complete view of user behaviour and engagement patterns. Our team provides clear, actionable insights to boost retention, personalise user journeys, and support better decision-making through AI-driven intelligence.
Gamification
We turn workouts in your app into fun and goal-driven experiences. Engaging challenges, reward systems, and achievement milestones keep users motivated, increase daily activity, and encourage them to return regularly.
We integrate immersive AR/VR experiences into your app (think interactive workouts, virtual trainers, or gamified fitness adventures), creating a more engaging and unique user experience, driving customer satisfaction, and helping your app stand out in the competitive UK fitness market.
Alongside mobile solutions, we develop responsive fitness web platforms that integrate seamlessly with your app, enhancing your brand’s credibility with a polished and professional digital presence. Our solutions ensure your clients have multiple touchpoints to access services easily and securely.
FAQs
What affects the cost of bespoke fitness apps?
The cost of developing a fitness app depends on several factors, including the number and complexity of the features you need (such as workout tracking, integrations with wearables, or social community functions), the platforms you want to support (iOS, Android, or both), design requirements, and the level of personalisation. You can share your vision of a fitness application and your requirements in our project calculator or contact us directly, and we’ll provide you with a ballpark estimation of your fitness application development costs.
How do you ensure user data security in my application?
Protecting user data is a top priority, especially for health and fitness apps where sensitive information is often collected. We follow industry best practices, including data encryption, multi-factor authentication, access control, secure APIs, and regular security audits to maintain compliance with UK GDPR.
Our engineering standards ensure every product is built with safety, reliability, and peace of mind at its core.
Do we need to provide a technical brief, or can you help define the scope?
Many of our clients start with just an idea or a set of business goals. Through our product discovery sessions, we help define the right feature sets and architecture and map out the roadmap for your fitness app development.
Can we start with an MVP and expand later?
Absolutely. Building a minimum viable product is often the best way to validate your concept, attract early users, and secure investor confidence without committing to a full-scale build. Once the MVP is live, we can help you prioritise feedback, add new features, and scale your app as your business grows.
Do you integrate payment systems into our fitness applications?
Depending on your goals (whether subscriptions, one-time purchases, or in-app upgrades), we integrate trusted payment systems such as Wise, Stripe, PayPal, WorldPay, and Apple/Google Pay. As a fitness mobile app development company, we also ensure that all integrations comply with industry standards, providing your users with a seamless and secure checkout experience.
Let’s make your application a UK fitness industry front-runner
Book an online meeting or visit our office in London. We’re always glad to hear about your forward-looking ideas.
Churchill Place
London E14 5RE, UK