Dartalyzer vs Lactate Express
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dartalyzer
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With Dartalyzer™ you can optimize your motion sequences during darts. TRAFFIC LIGHT SYSTEM With Dartalyzer, you get direct feedback on the throw with a traffic light system during training and can thus improve the throwing style. The following training types can be executed: - Throw constancy (throw strength) - Arm angle - Vertical acceleration (stand stability) - Movement extent - Mediolateral acceleration (lateral acceleration of the throwing motion) - Upper arm stability - Shoulder stability TRAINING OVERVIEW All training results are shown in an overview table. The average values and standard deviation are displayed for each training type. In addition, the average times between the first and second throw and between the second and third throw are calculated. GRAPHICAL VIEW In the graphical view, the acceleration values and the angles can be displayed in an X-Y diagram. Several throws can be displayed on top of each other so that differences between the individual throws can be quickly recognised. Currently three types of diagrams are supported: - Lateral deviation - Forearm angle - Upper arm angle (and optionally the angle of the forearm) In the basic version, a maximum of 3 throws can be displayed simultaneously and overlapping. In the premium version, 10, 20 or all throws of a training can be displayed simultaneously. GRAPHICAL VIEW OF COMPLETED TRAININGS (Premium version required) For the trainings recorded since V1.3, the acceleration values or the angles can be subsequently displayed in an X-Y diagram. The smallest and the largest angle at the beginning of the forward movement and the follow-through movement are displayed. 5D DARTSCREEN (Premium Version required) Visualize and improve the different parameters which are decisive for an optimal throw according to the 5D-Dartscreen: - Throw constancy (throw strength) - Vertical acceleration (stand stability) - Movement extent - Mediolateral acceleration (lateral acceleration of the throwing motion) - Upper arm stability TRAINING PROGRESS (Premium Version required) Compare the average values per training type of the current month with the values of the previous month. BACKGROUND Let Dartalyzer run in the background and analyze the individual rolls of an entire game afterwards. IMPORTANT NOTES 1) Dartalyzer requires either an Apple Watch or at least one MetaMotionR accelerometer from mbientLabs. These can be obtained from www.mbientlab.com. 2) So that the Apple Watch can read the acceleration data even when the screen is not active, the training is started via the Health Kit. The Dartalyzer App neither reads information from the Health Kit nor sends Health Kit data to the Dartaylzer server. 3) Dartalyzer is based on the method "5D-Dartscreen" from the book "Darts-Sport" by Harald Jansenberger from Hofman-Verlag. 4) Some features are only available in the premium version. This premium version can be activated via paid subscriptions. For further information please consult the terms of service at https://dartalyzer.com/terms-of-service/.
Lactate Express
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Lactate Express brings the lactate step-test to iPad, Mac, and iPhone — built for performance diagnosticians and serious endurance athletes. Capture every step-test precisely, compute thresholds with scientifically recognized models, and turn them into training zones you can actually apply. No more error-prone spreadsheets and manual entry. CAPTURE — fast and error-free • Step-test one step at a time: load (watts or km/h), lactate, heart rate, and Borg per step • Automatic readings over Bluetooth: SensCore lactate meters and Polar heart-rate sensors • Clear phases: rest, examination, recovery — with the current step clearly marked • Large input fields and one-tap entry, even under time pressure during a test ANALYZE — scientifically grounded • Six threshold models: Mader (4.0 mmol/l), Dickhuth, LT1, dMax, dMaxMod, and user-defined fixed values • Automatic curve fitting with coefficients and R² — the math stays transparent • Training zones such as GA1, GA2, and EB at a glance • Publication-grade charts REPORT — professional • Branded PDF reports with header and footer, charts, tables, and zones • Share via the native iOS and macOS share sheet COMPARE & TRACK — over time • Compare Tests: put any two step-tests side by side (Mac and iPad) to see exactly what changed • Home dashboard with threshold trends and deltas — an athlete's form at a glance • Roster overview to manage many athletes from one place (Team/Pro) • Cohort percentiles: see where an athlete ranks within the group WHO IT'S FOR • Diagnosticians: fast capture, athlete management, professional reports • Athletes: clear zones instead of jargon, an honest performance snapshot PLATFORMS Native SwiftUI — optimized for iPad and Mac, compact on iPhone. SUBSCRIPTIONS Lactate Express offers auto-renewable subscriptions with monthly and yearly terms. The subscription title, duration and price are shown in the app before purchase. Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your Apple Account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. Privacy Policy: https://www.lactate-express.de/lactate-express-policy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Lactate Express — train smarter, not harder.
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Verdict
The clearest difference is iOS requirement: Dartalyzer at 14 against Lactate Express's 17.5. On price, update cadence, ads and in-app purchases 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. Dartalyzer sells 2 in-app purchases, starting at $2.99 per month and Lactate Express sells 4 in-app purchases, starting at $24.99 per month. Whichever you choose, the download price is not the number that matters.
Dartalyzer ships an update every 5 weeks, Lactate Express every 3 weeks. The most recent releases landed on September 8, 2026 and August 16, 2026 respectively.
| Parameter | Dartalyzer | Lactate Express |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, Mac |
| Requires iOS | 14 — better | 17.5 |
| Further details — not scored | ||
| Size | 48 MB | 133 MB |
| Age rating | 4+ | 4+ |
| Developer | daluapps GmbH | COPAtec GmbH |
In-app purchases
Dartalyzer
- Premium monthly subscription$2.991 Month
- Premium annual subscription$27.991 Year
Lactate Express
- Teams (Monthly)$24.991 Month
- Professionals (1 Month)$44.991 Month
- Teams (Yearly)$250.001 Year
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- Professionals (Yearly)$399.001 Year
Questions
Is Dartalyzer free?
Is Lactate Express free?
Do Dartalyzer or Lactate Express have ads?
Which is updated more often, Dartalyzer or Lactate Express?
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