SwimAlyzer vs LaChart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SwimAlyzer
Analyze your freestyle swimming technique with AI-powered pose detection. Record or import videos to get a detailed breakdown of key metrics like hand entry, recovery, and body alignment. Improve your performance with instant feedback and personalized scoring.
- AI pose detection for swimming analysis
- Detailed metric breakdown (entry angle, recovery, symmetry)
- Scoring across performance zones
- Works in various environments (pool, open water)
- No wearables required
- Available in 7 languages
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SwimAlyzer uses advanced AI pose detection to analyze your freestyle swimming technique — right from your phone. Simply record a video of your swim (or import an existing one), and SwimAlyzer will track your body movements frame by frame. Within seconds, you receive a detailed breakdown of your technique across multiple metrics: Entry Angle — How your hand enters the water Recovery Height — Elbow position during the recovery phase Symmetry — Balance between left and right side Body Alignment — Horizontal body position (hip drop) Head Position — Optimal head alignment in the water Kick — Efficiency and amplitude of your kick Each metric is scored on a 0–400 scale across five performance zones: Critical, Weak, Solid, Very Good, and Excellent. See exactly where you stand and where to improve. WORKS EVERYWHERE Record at the pool, open water, or the ocean. SwimAlyzer handles different lighting conditions and environments. NO WEARABLES NEEDED No smartwatch, no sensors, no extra equipment. Just your phone and a swimming video. AVAILABLE IN 7 LANGUAGES English, German, French, Spanish, Italian, Japanese, and Chinese. FREE TO TRY Start with a free analysis. Upgrade to Premium for full metric details, historical tracking, and unlimited analyses. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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. SUBSCRIPTION LaChart Athlete and LaChart Coach are auto-renewable monthly subscriptions, each starting with a 14-day free trial. The price in your local currency is shown in the app before you confirm. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel it any time in your Apple ID account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lachart.net/privacy
Screenshots
Verdict
SwimAlyzer and LaChart are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. SwimAlyzer sells 2 in-app purchases, starting at $7.99 per month and LaChart sells 1 in-app purchase, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | SwimAlyzer | LaChart |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | — | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 138 MB | 95 MB |
| Age rating | 4+ | 4+ |
| Developer | Timo Klaeui | Jakub Stadnik |
In-app purchases
SwimAlyzer
- Premium Monthly$7.991 Month
- Premium Yearly$49.991 Year
LaChart
- LaChart Athlete14 Days trial$6.991 Month









