New app
New app: Cyclone
Cyclone launched on 24 Jul 2026: Phone app for FTMS smart trainers: free rides with live power, ERG workouts and multi-week plans by subscription.
Innovation: multi-week FTP, sweet spot and base plans that queue each session on the phone, with no account and no data collected
Visit arksigma.comAll about Cyclone
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About Cyclone
Cyclone is an iPhone and Android app for Bluetooth FTMS smart trainers. Free Ride shows live power, cadence, speed, distance and heart rate with a rolling power chart and buttons to change the trainer's resistance. Structured workouts run in ERG mode with each segment set as a % of your FTP; the site lists 22 built-in workouts, including ramp and 20-minute FTP tests, a builder for your own intervals, and 4- to 8-week plans (FTP Builder, Sweet Spot, Base Builder) that queue the next session. After a ride you get normalised power, intensity factor, TSS, time in each power and heart rate zone and a power curve from 1 second to 30 minutes. Rides are saved on the phone and export as TCX files to upload to Strava or elsewhere; the app has no account, no ads and, by its Google Play listing, collects no data. A Bluetooth heart rate strap can connect separately from the trainer. No virtual world, routes or ANT+. Riding is free; ERG workouts, the analytics charts and zone breakdowns need a subscription after a 14-day free trial. Made by ArkSigma Ltd.
Features
- ERG mode
- Workouts
Sends rides to
- Any tracker, by file (FIT, TCX…)
More from Cyclone
- Cyclone 1.1.35
- 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