Zone Visualisation
See your training zones displayed beautifully and clearly. Know exactly where your effort sits — every session, every rep.
Vivid Colour
Each zone in bold, distinctive colour. At a glance you know your zone — no squinting at numbers mid-workout.
Built for Athletes
Whether you train by heart rate, power, or pace — Zonelight adapts to your metrics and your sport.
On-Device
No accounts required. Your training data stays on your device — private, fast, always available.
Download & Open
Download Zonelight from the App Store. No account or sign-in needed.
Set Your Zones
Enter your training zone thresholds — heart rate, power, or pace — to match how you already train.
Train & Glance
During your session, Zonelight shows your current zone in vivid colour. No maths — just your zone, instantly.
Review Your Session
After training, see a breakdown of time in each zone. Understand your effort distribution and track progression.