Cyclone: Indoor Cycling
Smart trainer & ERG workouts
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Turn your Bluetooth smart trainer into a full structured-training studio.
Connect any FTMS-compatible smart trainer over Bluetooth and ride — live power, cadence, speed, and heart rate displayed in real time. Pick a structured workout and ERG mode holds your exact target wattage automatically. Or free ride and watch your effort on a live rolling power chart.
SMART TRAINER CONNECTION
Pairs with any FTMS-compatible Bluetooth trainer. Live Indoor Bike Data: instant power, cadence, speed, distance, and heart rate. Automatic reconnect between sessions.
STRUCTURED WORKOUTS — ERG MODE
Seven built-in training profiles: Easy Spin, Endurance, Sweet Spot, Tempo, Threshold, VO₂ Max Intervals, and Cooldown. Each segment targets a percentage of your FTP; the app pushes the exact wattage to the trainer automatically.
FREE RIDE MODE
Real-time panels for power, cadence, speed, distance, heart rate, and trainer resistance. Live 60-point rolling power chart. Inline resistance controls. Screen stays on during rides.
HEART RATE MONITOR SUPPORT
Connects to any standard Bluetooth heart rate strap independently from the trainer. App prefers strap HR over trainer HR when both are present.
WORKOUT HISTORY & ANALYTICS
Every ride saved locally. Post-ride analytics include power and heart rate zone distributions, normalised power, intensity factor, and TSS. Full per-second history charts on every workout.
CUSTOMISATION
Set your FTP for accurate zone targets. Toggle between metric and imperial units. App remembers your paired trainer and HR strap between sessions.
SUBSCRIPTIONS
New users receive a 14-day free trial of all premium features. After the trial, basic riding remains free forever. ERG structured workouts, analytics charts, and power/HR zone distributions require a Cyclone subscription (£2.99/month or £29.99/year, cancel anytime).
REQUIREMENTS
• An FTMS-compatible Bluetooth smart trainer
• iPhone running iOS 16 or later
TERMS OF USE
Cyclone Premium is an auto-renewable subscription governed by Apple's Standard End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Completely redesigned interface — one clean, high-contrast look across the app
• Workout profiles now show power zones in colour
• Redesigned Free Ride screen with a big live power display and clearer controls
• Fixed: resistance control now works reliably on FTMS smart trainers
• Fixed: workouts could fail to save on fresh installs
• Fixed: the History tab could get stuck on an old workout
The developer, ArkSigma, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ArkSigma Ltd
- Size
- 34.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Cyclone Annual $29.99
- Cyclone Monthly $2.99
- Copyright
- © 2026 ArkSigma Ltd