Obseed vs LaChart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Obseed
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Obseed is the app for ambitious athletes and fitness enthusiasts who want to reach their training goals with precision. Our platform makes it easy to plan, track, and analyze your workouts in depth. Inspired by the market’s leading tools, Obseed offers advanced—and most importantly, corrected—training data, personalized analysis options, and a user-friendly interface. Unlock your full potential and stay motivated with reliable data and tailored insights that take your training to the next level. Features: - Comprehensive workout tracking - Progress analysis - Intuitive user interface - Real-time data & insights Obseed – for those who want to get more out of their training!
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 update cadence: LaChart at every 9 days against Obseed's every 6 weeks. LaChart also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Obseed ships an update every 6 weeks, LaChart every 9 days. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.
| Parameter | Obseed | LaChart |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 226 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Metzing | Jakub Stadnik |
In-app purchases
Obseed
No in-app purchases
LaChart
No in-app purchases









