Comparison

Obseed vs LaChart

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Obseed

Features
Read full description

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!

About

LaChart

Features
Read full 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): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lachart.net/privacy

Screenshots

Obseed4 screens
LaChart4 screens

Verdict

The call

The clearest difference is in-app purchases: Obseed at none against LaChart's 1. LaChart's advantage is update cadence (every 10 days vs every 6 weeks) and iOS requirement (15.0 vs 18.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. LaChart sells 1 in-app purchase, starting at $6.99 per month. Obseed asks for nothing beyond the download.

UpkeepUpdate frequency

Obseed ships an update every 6 weeks, LaChart every 10 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
Obseed versus LaChart: the parameters behind the verdict, then further details
ParameterObseedLaChart
PriceFreeFree
Update frequencyEvery 6 weeksEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size19 MB95 MB
Age rating4+4+
Developerobseed GmbHJakub Stadnik

In-app purchases

None

Obseed

No in-app purchases

1 purchases

LaChart

Subscriptions1
  • LaChart Athlete14 Days trial$6.991 Month

Questions

Is Obseed free?
Obseed is free to download, with no in-app purchases.
Is LaChart free?
LaChart is free to download, with in-app purchases available.
Do Obseed or LaChart have ads?
Neither Obseed nor LaChart shows ads.
Which is updated more often, Obseed or LaChart?
Obseed ships an update every 6 weeks, and LaChart every 10 days. Most recently, Obseed was updated on November 4, 2026 and LaChart on October 31, 2026.

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