QZ Fitness

QZ Fitness

Unlock your bike/treadmill!

850 ratings
461 reviews
#1 in paid Sports
🌟 Lifestyle
⚽ Sports
$6.99
In-App Purchases

Details

Released
December 10, 2020
Updated
September 2, 2026

Features

QZ Fitness screenshot #1 for iPhone
QZ Fitness screenshot #2 for iPhone
QZ Fitness screenshot #3 for iPhone
QZ Fitness screenshot #4 for iPhone
QZ Fitness screenshot #5 for iPhone
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About

This app connects your existing exercise bike, treadmill, or elliptical to popular fitness platforms like Zwift, Peloton, and Rouvy. It allows you to use your equipment with virtual training apps and can also read heart rate data from your Apple Watch or Bluetooth heart rate belts.

✓Connects to Zwift, Peloton, Fulgaz, Rouvy
✓Supports bikes, treadmills, ellipticals, rowers
✓Reads heart rate from Apple Watch/Bluetooth belts
✓Saves heart rate data to workouts
✓Compatible with numerous brands
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What users say about QZ Fitness

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What's New in QZ Fitness

2.21

September 2, 2026

New Equipment Support Added support for 50+ new devices and protocols, including: Ultrasport F-Bike Pro, Kingsmith X21, Xplova Noza One, Keep Bike, Echelon Row 7s, Magee T600 ECO Smart Trainer, SmartRow V3, LifeSmart TM55, Volava, CARE SportsPlus rower, TOPUTURE TP6 and TEB, ProForm 105 CST, Sperax RM02, WaterRower USB, Van Rysel RCR, Freebeat Fit via USB/UART, MOK Fitness S10 Ultra, OpenBikeControl via UDP/mDNS, MRK-S36C ERG control, Adidas Horizon incline support. New Features Apple Watch rowing distance and total calories now written to HealthKit Heart rate from another QZ instance can be written to Apple Health on iPad Configurable Live Activity metrics on iOS Upload workouts directly from Workout History Grade-adjusted pace tile for treadmill running Heart rate zones and live speed/incline/heart charts for treadmills Treadmill auto-adjust speed by target power and force-running activity setting Custom gear resistance table for Virtual Shifting Cadence gain/offset applied to Apple Watch cadence; speed derived from cadence on Fake Treadmill Resistance +/- controls added to floating UI Custom watt tables for CSC and SmartBike resistance Garmin Lap Workouts, cadence targets, and secondary step targets Post-workout RPE/Feel popup saved to FIT files FIT files enriched with target zones, training effect, and session statistics Estimated watts from pace for WDK rowers and stroke-length calculation Zwift Click v1 and v2 simultaneous support Multilanguage Web Views and persistent workout editor device type HealthFit Android override, Xiaomi content helper, and Echelon Unlock for Peloton on iOS Bug Fixes Fixed HR PID boundary handling, race conditions, and stuck single-gear programs Fixed division-by-zero crashes, 10x calorie reporting, Apple Silicon startup crashes, OAuth secrets in logs, and doubled iOS Health cadence Fixed workout history imperial distance, editor key handling, and Carbon TLX disconnections Improved FTMS/Sole fallback and M3i iOS workout stability Fixed FS treadmill incline limits/override and ApexBike metrics parsing Fixed iOS search layout and Zwift Click one-direction handling Fixed Garmin workout visibility, special-character login, and workout/CORE synchronization Fixed FTMS elliptical, CARE/SportsPlus rower, Toputure TEB5, Nautilus B628, and MRK-S36C handling Fixed treadmill live charts, Adidas incline mapping, and Zwift Ride gear defaults Fixed FIT sport selection and missing preview inclination Deleted FIT files are now removed with their workouts; invalid Health Connect HRV samples are ignored Fixed WaterRower iOS build integration, Android/FitPro packaging, UnsatisfiedLinkError, and keyboard shortcuts Improved Freebeat telemetry/serial handling and V-BLE-R FTMS rower detection Fixed Wahoo KICKR RUN commands, speed display, and rapid-press accumulation MOK Fitness S10 Ultra now computes power from resistance and is correctly marked as non-ERG; fixed its setting count

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Subscriptions & In-App Purchases

Swag Bag

Swag Bag

$1.991 Month
How to cancel QZ Fitness subscription ⁉️

Charts

Top Paid

🥇 1

Sports

The app has maintained its position at 1 recently.

Last updated on November 4, 2026.

Top Paid

📉 139-14

Global

This app dropped -14 positions in Global chart.

Last updated on November 4, 2026.

User reviews

Using on Adidas T-800

Absolutely mazing app!!! Also if you have any issues Roberto helps you out straight away!!!

Auto incline enabled on Zwift!

Now my relatively budget Sunny treadmill inclines automatically during my Zwift runs. Money well spent and the developer was incredibly responsive to my questions.

Indispensable Peloton bridge, incredible developer support

I use QZ on my iPhone to bridge my WalkingPad to the Peloton app on my iPad, and it works flawlessly — speed, heart rate, and distance all flow into my Peloton walking classes.
What earns the fifth star is the developer. I reported a HealthKit bug (steps not syncing when workout permission was off); Roberto diagnosed the cause, built the fix, and had a TestFlight build to me the next morning. That level of support from an indie developer is unheard of. Highly recommended.
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Amazing

What a brilliant app. Found by pure accident when looking at ideas to connect a bit of a dated treadmill I was given to Zwift. Works perfectly. What’s more the developer is such a cool guy. Answered my questions almost immediately and got me running (literally) in no time at all. Worth every penny.
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Redoing my review

Originally gave it a 1 star until I figured it out. All good now.

Developer apps

User experience

🐞

Reported Bugs

2 issues

Resistance not syncing correctly with some bikes

Bug

Metrics not updating in real-time for some users

Bug
✨

Requested Features

3 requests

Family sharing option

Feature

Improved user interface design

Feature

Automatic data sync with more fitness platforms

Feature

FAQ

What does the QZ app do?

The QZ app acts as a bridge, allowing you to connect your compatible home exercise bike, treadmill, elliptical, or rower to popular virtual fitness platforms like Zwift, Peloton, Fulgaz, and Rouvy. It essentially gives your existing equipment a second life by enabling it to be recognized by these training apps.

What exercise equipment is compatible with QZ?

The app supports a wide range of equipment, including many Echelon bikes and rowers, Domyos bikes, treadmills, and ellipticals, as well as Proform bikes and treadmills, Concept Rower 2, and several other brands. Specific compatibility details and firmware checks are available on the developer's website.

How does the app handle heart rate monitoring?

QZ can integrate with HealthKit to read your heart rate directly from your Apple Watch or any Bluetooth heart rate belt. This heart rate data is then saved within your workout logs, providing a more comprehensive record of your training sessions.

Is the QZ app free to use?

The app is free to download and use for its core functionality of connecting your equipment. However, there is an optional auto-renewing subscription called the 'Swag Bag' available through an in-app purchase to support the app's development.

Can I use this app with my existing exercise bike and Zwift?

Yes, if you have a compatible exercise bike (such as Echelon, Proform, or Domyos) and want to use it with Zwift, this app is designed for that purpose. It allows Zwift to recognize your bike's performance metrics, enabling you to participate in virtual rides.