FitKit Pro vs LaChart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FitKit Pro
This app provides essential timer tools for functional fitness training. It includes features for cadence, resistance exercises, HIIT, EMOM, and 1-rep max calculation. Unlock full functionality with a subscription.
- Metronome for cadence tuning
- Tempo timer for resistance exercises
- Tabata timer for HIIT
- EMOM timer for interval training
- 1RM calculator
- Subscription for full access
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FitKit Pro - Precision Timing for Every Workout FitKit Pro is a streamlined collection of professional-grade timing tools designed for functional fitness, strength training, and interval-based workouts. Whether you are training in the gym, on the track, or at home, FitKit Pro helps you stay focused, consistent, and in control of every session. Essential Timing Tools Metronome Dial in running cadence or control the rhythm of repetitive drills like jumping, hopping, or mobility work. Tempo Trainer Structure every rep with precise control over concentric, isometric, eccentric, and rest phases. No more counting - just train. Tabata Timer Perfect for HIIT and interval workouts with customizable work and rest ratios. EMOM (Every Minute on the Minute) Set your interval and let it repeat automatically for a defined number of rounds and sets. Workout Timer Simple, flexible timing for any workout or session. Playlist Integration Keep your training flowing with integrated audio cues and timing support. Can share between devices (ex. your PT can develop the exercise playlist, and then share it directly to your app). Capture videos for each exercise for later review by the user. Create Circuits (exercise repeat cycles) within your Playlist Progress view Shows your exercise history over a selectable period of time. Help keep you accountable. Built for Training Flow • Clean, distraction-free interface • Audio cues and haptics to keep you on track • Fast setup so you can start training immediately • Designed for real workouts, not just basic timing • Wirelessly, and securely, receive workout updates from your clinician More to Come FitKit Pro continues to evolve with new tools and enhancements focused on improving your training experience. Free Trial Download FitKit Pro and try each tool three times before choosing a subscription. Subscription Options Unlock full access to all tools with a monthly, yearly, or one-time purchase option. Subscriptions include: • Ongoing updates and improvements • Bug fixes and performance enhancements • Access to new tools as they are released Subscription Details • Payment will be charged to your Apple ID account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period • Your account will be charged for renewal within 24 hours prior to the end of the current period • You can manage subscriptions and turn off auto-renewal in your Account Settings after purchase • Any unused portion of a free trial will be forfeited upon subscription purchase Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula Privacy Policy: https://FitKitPro.app/app-privacy-policy
LaChart
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LaChart is a professional lactate testing and athlete performance tracking app designed for coaches and endurance athletes. LACTATE TESTING • Conduct step tests and record blood lactate values in real time • Connect Bluetooth heart rate monitors for live HR tracking • Automatic lactate curve calculation with LT1 and LT2 threshold detection • Manual threshold override for custom coaching adjustments TRAINING ZONES • Automatic zone calculation based on lactate thresholds • Support for cycling (power/watts), running (pace) and swimming • Metric and imperial unit support ATHLETE MANAGEMENT • Manage multiple athletes from a single coach account • Track progress across multiple tests over time • Compare test results and monitor fitness development REPORTS & SHARING • Generate professional PDF reports for each test • Send reports directly to athletes via email • Visual lactate curve charts included in every report DESIGNED FOR PROFESSIONALS LaChart is built for sports scientists, coaches and serious athletes who need accurate, data-driven insights to optimize training load and performance.
Screenshots
Verdict
The clearest difference is in-app purchases: LaChart at none against FitKit Pro's 3. LaChart also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, 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. FitKit Pro sells 3 in-app purchases, starting at $3.99 per month. LaChart asks for nothing beyond the download.
FitKit Pro ships an update every 10 days, LaChart every 11 days. Both last shipped on September 9, 2026.
| Parameter | FitKit Pro | LaChart |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (33 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 33 — better | — |
| Update frequency | Every 10 days — better | Every 11 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 65 MB | 223 MB |
| Age rating | 4+ | 4+ |
| Developer | Schumacher Physical Therapy and Performance | Jakub Stadnik |
In-app purchases
FitKit Pro
- Base Utilities (1-month)7 Days trial$3.991 Month
- Base Utilities (1-year)7 Days trial$19.991 Year
- Lifetime$49.99
LaChart
No in-app purchases





