SWEAT
Kayla Itsines · acquired for $400M
#1in 142 countries
10M+downloads
Fitness app developers behind SWEAT & 50M+ users.
Australia’s specialist fitness app development company. We have shipped fitness apps used by 50 million people - from the world’s number-one workout app to Italy’s market leader. Workout tracking, wearable fitness app integration, nutrition, community, subscriptions - engineered to retain.
- ✓Apple Best of Developers, Watch & TV App of the Year
- ✓20+ fitness apps featured by the App Store & Google Play
- ✓$500M+ in combined client revenue · $400M SWEAT exit
- ✓30+ global awards for fitness app development
$500M+Client revenue generated
50M+Combined fitness app users
#1 / 142Countries · SWEAT peak
13+ yrsIn fitness app development
Three brands. Three #1 fitness apps.
Selected fitness app development projects PixelForce has built and scaled alongside founders - from MVP to category leadership.
Traininpink
Italy’s leading fitness app
#1Italy fitness
+50%user growth
Move With Us
Rachel Dillon · subscription platform
4.9App Store rating
8,500+reviews
Want to build app like SWEAT?
We did. PixelForce built SWEAT from a $150K MVP to a $400M acquisition - Kayla Itsines’ subscription fitness app, #1 in 142 countries, $100M+ annual revenue at peak. SWEAT co-founder Tobi Pearce is now a strategic investor and advisor to PixelForce. The same fitness app development team is available for your project.
Built by PixelForce
10M+
downloads · #1 in 142 countries
Recognised by Apple, Clutch & the people who actually use the apps.
A decade of independent recognition for the fitness app developers behind SWEAT, Traininpink, and twenty more shipped products.
Why founders pick our fitness app development team.
Four reasons trainers, creators, gym chains, and established fitness brands keep choosing PixelForce. We understand fitness as a business, not just a product category.
Proven fitness app track record
We built SWEAT from MVP to $400M exit and Traininpink to Italy’s number-one fitness app. Twenty more shipped. Validated by markets, not theory.
Wearable & fitness-platform expertise
Expert in HealthKit, Google Fit, Apple Watch, Fitbit, Garmin, Polar, Whoop. Wearable fitness app integration, video streaming, offline workouts, real-time tracking.
Fitness-business fluency
We speak in churn, LTV, CAC, DAU, retention cohorts and revenue per user - the metrics that decide whether a fitness app survives its second year.
Community engineering
Leaderboards, challenges, progress sharing, trainer-client chat. Social features lift twelve-month retention 40-60 percent over solo workout apps.
Fitness app development services we deliver.
Six fitness product types we have shipped repeatedly across thirteen years. Pick a category - or combine them into a hybrid platform.
Personal trainer app development
Custom workout builders, video form review, client check-ins, billing - purpose-built for trainers scaling beyond one-to-one sessions.
Workout app development & training plans
Progressive overload, interval timers, exercise libraries, history charts. Strength, HIIT, yoga, pilates, running, postpartum, rehab.
Community & social fitness platforms
Challenges, leaderboards, transformation feeds, trainer Q&A, achievement badges. The engagement layer that compounds into retention.
Wearable fitness app integration
Apple Watch native apps, HealthKit, Google Fit, Fitbit, Garmin, Polar, Whoop. Heart-rate zones, HRV, GPS, sleep, recovery analytics.
Nutrition & meal-planning apps
Macros, calories, recipe libraries, barcode scanning, water and supplement tracking. MyFitnessPal-grade nutrition modules layered on workouts.
Gym app development & on-demand classes
Netflix-style class libraries, live streaming, multi-trainer marketplaces, gym member portals, AirPlay and Chromecast for TV.
Cross-platform fitness app development that owned a country.
Traininpink launched simultaneously on iOS and Android using Flutter - a textbook cross-platform fitness app development project shipped in 3.5 months. Today: Italy’s #1 female fitness app, 50% year-over-year user growth.
Built by PixelForce
+50%
YoY user growth · #1 in Italy
Fitness app monetisation that compounds.
Three revenue models we have built and operated. The right path depends on your audience, your content velocity, and your existing distribution.
Subscription
$9.99 – $29.99 /month
The SWEAT model. Predictable recurring revenue. Highest lifetime value. Aligned incentives - you win when users keep paying because they keep getting results.
- 7-14 day free trial
- Annual discount (20-30%)
- Multiple tiers · family plans
Freemium
Free + premium · IAP
Rapid acquisition. Free core features funnel into paid programs, advanced analytics, or ad-free access. Best when you have content velocity to keep the funnel fed.
- 2-5% conversion in 90 days
- Personalised plan upsell
- Ad-free as a premium feature
Hybrid & B2B2C
$5 – $99.99 · per seat / pack
In-app purchases for challenges and packs. White-label for gyms and corporate wellness ($5-$15 per employee). Marketplace revenue-share with trainers (70/30 or 80/20).
- Enterprise wellness deals
- Trainer marketplace splits
- Celebrity / brand collaborations
Essential fitness app features that drive retention.
Six modules we build into almost every fitness app development project. The technical depth here is where most fitness apps quietly fail.
Workout tracking & logging
- 1,000+ exercise database
- Sets, reps, weight, time - fast UI
- Rest timers with customisable durations
- Personal records & streak celebrations
- Auto progressive-overload suggestions
Video exercise demos
- High-quality form tutorials
- Multiple camera angles, slow motion
- Audio coaching cues during sets
- Adaptive bitrate streaming
- Offline video downloads for gym WiFi
Progress visualisation
- Body measurement tracking
- Progress photo side-by-side
- Strength progression graphs
- Workout-consistency calendars
- Before/after transformation galleries
Personalisation
- Goal-based program selection
- Beginner / intermediate / advanced paths
- Equipment-aware workouts
- Injury accommodations & modifications
- Adaptive difficulty as performance rises
Social & community
- Activity feed & reactions
- Monthly challenges & team comps
- Leaderboards by consistency & gains
- Private accountability groups
- One-tap sharing to Instagram & co
Offline functionality
- Download workouts for offline use
- Offline logging without internet
- Background sync when reconnected
- Downloaded video for spotty coverage
- Critical for gym environments
One conversation. Three phases. Built to grow.
A proven fitness app development process behind 100+ launches and $1.5B+ in combined client revenue. On budget. On schedule. Built to grow.
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★Free
Discovery call
No cost. No obligation. Just clarity. We sign a mutual NDA, then use our 1-3-1 method - one problem, three options with honest trade-offs, one recommendation - to find the right balance across your budget, timeline and scope.
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14-8 weeks
Scoping & design
Strategic workshops, BRD, full UX/UI design system with every screen built, PRD, and a fixed-cost Statement of Work. You leave with everything needed to build with confidence - no scope surprises. We will not quote development without this phase complete.
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23-6 months
Development, QA & release
From idea to a live App Store listing. Sprint cadence with regular demos so you see your app coming to life. Comprehensive QA across devices and edge cases. End-to-end App Store and Google Play submission. You leave with a high quality product built to scale from 1,000 to 1,000,000 users.
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3Ongoing
Post-launch support
24/7 monitoring, critical-defect warranty, and capped technical support. The optional Product Retainer adds four-week sprints, structured planning, and quarterly business reviews - the model that grew SWEAT from MVP to a $400M platform across 7+ years.
Fitness app development case studies.
Selected fitness app development work - built by the same senior team you would work with on your project.
NKO Club: Building Kendall Toole's Holistic Wellness Platform
We designed and built the mobile platform for former Peloton superstar Kendall Toole, creating a holistic wellness ecosystem that unites movement, mindset, and nutrition.
Scaling Sweat: The World's #1 Female Fitness App
Learn how PixelForce helped scale the Sweat app to achieve global dominance in the fitness industry.
Train With Cass 2.0: Complete Fitness App Rebuild From Scratch
PixelForce rebuilt Train With Cass from the ground up using Flutter, delivering the seamless fitness experience Cass Olholm originally envisioned after years of instability.
Rachel Dillon: Tech Debt Management for Move With Us App Growth
Effortlessly transitioned and transformed Move With Us app performance, focusing on systematic tech debt reduction and robust growth.
Italy's No.1 Female Fitness App - Traininpink, Women Empowerment
Traininpink's journey to becoming Italy’s no.1 female fitness app by understanding and integrating cultural preferences.
Pilates Obsession: From Studio to Global Platform
We transformed Sara Colquhoun's two-decade Pilates expertise into a world-class mobile platform, delivering structured programs and on-demand classes globally.
Revia: Empowering Women Through Hybrid Fitness Training
We transformed fitness coach Revie Jane's vision into a comprehensive hybrid training platform, reaching #3 in Apple's Health & Fitness category within 48 hours of launch.
Enhancing In-Gym Experience with Fitstop's Tech-Driven Solutions
Enhancing Fitstop's in-gym experience with a bespoke mobile app that supports both consumers and franchise management.
Fibotic, The AI-Driven Fitness App That Pays You to Stay Fit
Fitbotic introduces a cutting-edge, AI-driven fitness app that motivates users and transforms home workouts.
Unlocking Traininpink's Growth Through Data-Driven User Onboarding
Leveraging analytics, we refined Traininpink’s onboarding process to boost user acquisition and retention.
WaveKi by Brad Gerlach On-Demand Online Surf Coaching Course
WaveKi On-Demand transforms surf coaching & training with accessible, high-quality online digital content.
Cass Olholm: Train With Cass App Rescue & Performance Recovery
PixelForce rescued Train With Cass's failing iOS app from another developer, eliminating crashes, improving performance, and restoring member confidence quickly.
Fitness app development questions.
Common questions from founders, trainers, and product leads evaluating fitness app development partners.
Basic personal-trainer apps with workout tracking and video libraries cost $100K-$150K (3-4 months). Standard fitness apps with community features and nutrition tracking cost $150K-$300K (4-6 months). Advanced fitness platforms with live streaming, multi-trainer marketplaces, and AI personalisation cost $300K-$600K (6-12 months). Ongoing costs include server hosting, video CDN, App Store fees (15-30% of subscription revenue), and maintenance.
MVP fitness apps take 3-4 months. Standard fitness apps with comprehensive features take 6-9 months. Advanced fitness platforms take 9-15 months. SWEAT’s MVP shipped in 4 months - validating product-market fit before expanding. Traininpink launched cross-platform in 3.5 months using Flutter.
Workout tracking, video exercise demonstrations, progress visualisation, timer functionality, personalisation, offline functionality, and push notifications. Advanced features driving retention include wearable integration, social and community, nutrition tracking, habit tracking, achievement systems, and subscription payments. Social features increase 12-month retention 40-60% over solo apps.
For most projects we recommend cross-platform with Flutter - 40% cost savings versus building two native apps, faster time-to-market, single codebase. Choose native iOS/Android when you need bleeding-edge wearable features, Apple Watch as a core workout experience, performance-critical features (AR, complex 3D), or platform-specific functionality essential to your concept.
iOS apps integrate HealthKit (heart rate, calories, steps, workouts, sleep - bidirectional), native Apple Watch apps with complications and standalone workout sessions, and background sync. Android uses Google Fit, Wear OS, and Samsung Health. Third-party wearables integrate via manufacturer APIs (Fitbit SDK, Garmin Connect IQ, Polar AccessLink, Whoop). SWEAT’s Apple Watch integration increases workout frequency by 35%.
Subscription generates the highest lifetime value. SWEAT’s $19.99/month model peaked at $100M+ annually. Typical fitness app pricing is $9.99-$29.99/month or $79.99-$199.99/year. Freemium works for rapid acquisition (2-5% conversion in 90 days). Alternative models include one-time premium ($29.99-$99.99), IAP, B2B2C white-label for gyms ($5-$15 per employee), and hybrid subscription-plus-IAP.
Yes. Trainers have major advantages: proven methodology, existing client base for beta and early subscribers, established credibility, and the ability to produce authentic workout content. SWEAT started with Kayla Itsines’ BBG methodology and her Instagram audience. Success factors: validated methodology, defined niche, content production capability, an engaged audience even if small, and a business mindset. Typical MVP investment for trainer-led launches is $120K-$150K.
Three factors we optimise: efficacy (workouts produce real results), engagement (the app is enjoyable and habit-forming), and community (social accountability sustains motivation). Key retention drivers: structured progressive programs, visible progress tracking, achievement systems, social features (40-60% lift), personalisation, workout variety, and strategic push notifications. Retention killers: unclear progression, poor video instruction, technical issues, overwhelming complexity, and lack of quick wins in the first 7 days.
Yes. Post-launch support covers iOS/Android OS updates, performance monitoring, wearable-API maintenance, new feature work, CMS support, server scaling, ASO, analytics, and product guidance. Retainers run on a four-week story-point model from $10K (Steady) up to $50K (Momentum), with Enterprise priced on application. We have maintained SWEAT for 7+ years through dozens of platform updates, new trainers, feature expansions, and infrastructure scaling.
Build the next SWEAT.
Tell us about your fitness app project. We will tell you what it takes, what it costs, and what we would build first - straight, no jargon. Australia’s specialist fitness app development company, available for a free consultation.
- Senior team only
- Fixed-scope contracts
- 3-month post-launch warranty
- 13+ years & 200+ products