STUnlocker Ride vs VO2 Max Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STUnlocker Ride
Track your Shimano STEPS E-bike rides with this app. It records speed, cadence, battery, and GPS data, and supports external heart rate monitors. Analyze your sessions and export them to popular fitness platforms.
- Records E-bike ride sessions
- Displays speed, cadence, assist level, battery
- Supports external HRM sensors
- Analyzes recorded sessions
- Exports to GPX and FIT formats
- Integrates with Strava and Apple Health
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!! Warning !!! Bikes with SC-E8000 display are not supported!!! Shimano did not endow this display with the ability to output telemetry via Bluetooth. STRide App is designed to record your ride session on Shimano STеPS E-bikes (EP801, EP600, EP8, E8000, E7000, E6100, E5000 motors are supported). The App supports external HRM sensors via Bluetooth. Displays bike's Speed, Cadence, Assist mode and Assist Level, Battery state, Range, Di2 data (gears), Distance, GPS data, HRM, Acceleration, Altitude (via Barometer sensor). The STRide App has the ability to view and analyze recorded sessions. Recorded sessions can be exported to GPX, FIT formats for import into STRAVA and other apps. STRide has integration with STRAVA service. This App shows the real Speed/Distance of the bike according to correction factors The App has integration with Apple Watch (controlling the App, getting Heart Rate from Watch, displaying basic parameters) and Health App integration.
VO2 Max Tracker
Measure your cardio fitness (VO₂ max) using a treadmill test and track your progress. Create or select from pre-made HIIT workouts, with real-time guidance on target zones. Integrates with Apple Watch and Bluetooth heart rate monitors.
- VO₂ max testing on treadmills
- HIIT workout creation and selection
- Real-time target zone guidance
- Apple Watch and heart rate monitor integration
- Workout history with heart rate graphs
- iCloud data synchronization
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Use Zephyrus to test your cardio fitness (VO₂ max) on a treadmill, and track your improvement. You can also use Zephyrus to do HIIT workouts. The app comes with a selection of workouts, and lets you create your own workouts. Zephyrus tells you when the target zone changes. To get your heart rate in the app, you can use Apple Watch or heart rate monitors with Bluetooth. Garmin watches with Virtual Run are supported. Cardio fitness is measured with a modified Bruce protocol test you can perform on most treadmills. The test consists of stages with increasing intensity and ends when you reach 85% of maximum heart rate. You can do HIIT workouts on Apple Watch, so you don't have to bring your phone. Your past workouts are saved to your workout history, where you can see the heart rate graph and calories burned. Your data is stored in iCloud, which makes it accessible across your Apple devices. Always consult with a healthcare provider before starting any new exercise program. Exercise can carry risks, especially for people who have certain medical conditions or who have not been physically active in a long time. It's important to understand that using this app does not replace a doctor's advice or treatment. If you would like to report an issue or request a feature for the app, feel free to contact the App Support email. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: STUnlocker Ride at none against VO2 Max Tracker's 6. STUnlocker Ride also leads on ratings volume (19 vs 1). On price, rating, update cadence and ads 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. VO2 Max Tracker sells 6 in-app purchases, starting at $4.99 per 7 days. STUnlocker Ride asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.1 for STUnlocker Ride against 4.0 for VO2 Max Tracker. That said, the two scores are not equally well evidenced: STUnlocker Ride has 19 ratings behind it against 1, so its average is the more settled of the two.
STUnlocker Ride ships an update every 10 days, VO2 Max Tracker weekly. The most recent releases landed on September 22, 2026 and September 26, 2026 respectively.
| Parameter | STUnlocker Ride | VO2 Max Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (19 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 64.3% of reviews | — |
| Number of ratings | 19 — better | 1 |
| Update frequency | Every 10 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 15.6 — better | 16.6 |
| Further details — not scored | ||
| Size | 67 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Vadim Bukin | Havard Tryman |
Customer experience
STUnlocker Ride
VO2 Max Tracker
In-app purchases
STUnlocker Ride
No in-app purchases
VO2 Max Tracker
- Pro (Weekly)7 Days trial$4.997 Days
- Pro (Monthly)3 Days trial$7.991 Month
- Pro3 Days trial$8.997 Days
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- Pro$24.991 Year
- Pro (Yearly)3 Days trial$24.991 Year
- Pro (Yearly)$59.991 Year
Questions
Is STUnlocker Ride free?
Is VO2 Max Tracker free?
Which has better reviews, STUnlocker Ride or VO2 Max Tracker?
Do STUnlocker Ride or VO2 Max Tracker have ads?
Which is updated more often, STUnlocker Ride or VO2 Max Tracker?
Other comparisons
