--- title: "LaChart - Reviews, Revenue and Downloads in Czechia | Apple App Store" description: "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 rea" --- # LaChart — Czechia > Lactate Testing for Athletes ![LaChart App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/1f/af/d9/1fafd9ff-9d38-ce05-b842-d0853f85ee2d/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [Jakub Stadnik](https://apptail.io/developer/jakub-stadnik-fFVnlc) **Category:** Sports **Rating:** 5.0/5 (3 ratings) **Price:** Free **Bundle ID:** com.lachart.app **Store:** Apple App Store **Country:** Czechia **Version:** 1.0.14 (released 2026-10-25) **Original Release:** 2026-05-21 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/cz/app/app/id6764768876) **AppTail Page:** [https://apptail.io/app/lachart-ULeA/czechia](https://apptail.io/app/lachart-ULeA/czechia) ## LaChart Description 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): Privacy Policy: ## LaChart Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/6b/50/77/6b507776-b52c-76be-3b3a-81fa32d5f7c4/LaChart-01.png/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/46/15/50/4615505f-6425-11df-e322-de40926b7a32/LaChart-02.png/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/29/36/b5/2936b5d9-8ae2-2596-86e5-9134bf33caf5/LaChart-03.png/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/98/63/f9/9863f948-0e93-d7f5-1702-00d0a5a94872/LaChart-04.png/1242x2688.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a5/37/ac/a537ac0f-3380-3813-9e01-0afe28c236d8/LaChart-05.png/1242x2688.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/49/cc/1f/49cc1f83-340c-a5c2-759e-0c74808d65c9/LaChart-06.png/1242x2688.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/9e/80/45/9e804532-35d1-b3b2-188c-564803f91ae8/LaChart-07.png/1242x2688.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ab/f2/32/abf2326a-630c-6bfc-41b0-7c0375099605/LaChart-08.png/1242x2688.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/19/ea/26/19ea2659-46b8-2e54-ddf9-9e7c03901a6f/LaChart-09.png/1242x2688.png) - [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b4/54/bd/b454bd3b-d1ae-37b3-71a4-8377af032146/LaChart-10.png/1242x2688.png) ## LaChart Rating Breakdown in Czechia - 5 stars: 3 (100%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## LaChart Available In - [Czechia](https://apptail.io/app/lachart-ULeA/czechia) - [Germany](https://apptail.io/app/lachart-ULeA/germany) - [Dominican Republic](https://apptail.io/app/lachart-ULeA/dominican-republic) - [Luxembourg](https://apptail.io/app/lachart-ULeA/luxembourg) - [Madagascar](https://apptail.io/app/lachart-ULeA/madagascar) - [United States](https://apptail.io/app/lachart-ULeA/united-states) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*