FLOWBIO vs PROTR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FLOWBIO
This app analyzes sweat data to provide personalized hydration and recovery strategies for athletes. It connects to a sweat sensor to track fluid and sodium loss, offering tailored plans and pre-session predictions to optimize performance.
- Personalized hydration strategies
- Tailored recovery plans
- Pre-session performance predictions
- Intake logging
- Support for electrolyte brands
- Integrations with Garmin, Wahoo, Zwift, Coros
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Dehydration, cramps, poor recovery? Most athletes face these problems because they don’t know what they’re really losing in sweat. The FLOWBIO System solves this. By pairing the world’s most accurate sweat sensor with the FLOWBIO App, you can finally connect sweat data to your performance, recovery, and progress. FLOWBIO Sensor: Measures your sweat in real time with lab-grade accuracy, tracking your unique fluid and sodium losses in every run, ride, and race. FLOWBIO App - Transforms your sweat data into simple, personalised hydration strategies. - Tailored recovery plans built from your actual losses. - Pre-session predictions so you start properly prepared. - Intake logging and support for your preferred electrolyte brands. Integrations: - Garmin - Wahoo - Zwift - Coros
PROTR
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Your complete training companion. PROTR is a free training app for serious athletes and coaches. Whether you run, cycle, lift, or do multi-sport - PROTR tracks everything in one place. PROTR brings your workouts, nutrition, and progress tracking together in one powerful app - so you can focus on what matters: getting better. Whether you're lifting, running, cycling, swimming, or training for your next cross fitness race, PROTR adapts to your sport and keeps you on track. PLAN & LOG WORKOUTS Build custom workouts or choose from a library of sport-specific templates. Log sets, reps, distance, and time with a clean, intuitive interface designed for mid-session use. Track your real-time heart rate and see how your effort compares to previous sessions. TRACK YOUR NUTRITION Log meals, monitor your macros, and stay on top of your daily calorie, protein, carb, and fat targets. AI-powered insights help you understand how your nutrition supports your training. MONITOR YOUR PROGRESS Sync with Apple Health to bring together your sleep, heart rate variability, resting heart rate, and VO2 Max data. See trends over time and understand how recovery and readiness impact your performance. DISCOVER EXPERT PROGRAMS Browse the marketplace to find training plans and workout programs from coaches and creators you trust. Download and follow structured plans built by professionals. EARN AS YOU TRAIN Stay motivated - Hit milestones, climb the leaderboard, and build consistency through a system that rewards showing up. BUILT FOR EVERY SPORT Running · Cycling · Swimming · Weight Training · Yoga · Pilates · Functional Training · Stretching · Recovery · and more. KEY FEATURES Custom and template-based workout logging Macro and meal tracking with AI nutrition insights Apple Health integration (HR, HRV, sleep, VO2 Max) Marketplace for personal trainer / coach-created plans and programs Real-time heart rate monitoring during workouts Gamification with streaks, badges, and leaderboards Multi-sport support with sport-specific tracking Coach mode for trainers managing athletes Start training smarter today. Terms of Use: https://protr.app/terms | Privacy Policy: https://protr.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: FLOWBIO at none against PROTR's 10. FLOWBIO also leads on update cadence (fortnightly vs every 5 weeks). PROTR's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. PROTR sells 10 in-app purchases, starting at $149.99 per month. FLOWBIO asks for nothing beyond the download.
FLOWBIO ships an update fortnightly, PROTR every 5 weeks. Both last shipped on October 5, 2026.
| Parameter | FLOWBIO | PROTR |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 79 MB |
| Age rating | 17+ | 12+ |
| Developer | FLOWBIO LTD | Out Of Home Limited |
In-app purchases
FLOWBIO
No in-app purchases
PROTR
- PROTR Coaching$149.991 Month
- PROTR Coaching$159.991 Month
- PROTR Coaching$164.991 Month
Show 7 moreShow fewer
- PROTR Coaching$169.991 Month
- PROTR Coaching$174.991 Month
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- PROTR Coaching$184.991 Month
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- PROTR Coaching$194.991 Month
- PROTR Coaching$199.991 Month









