Zonelight
iOS · Training Zones

Zonelight

See your training zones in a new light. Zonelight gives athletes a beautiful, at-a-glance view of their effort — vivid, clear, and built for how you actually train.

↓ Download on App Store Get Support
🎯

Zone Visualisation

See your training zones displayed beautifully and clearly. Know exactly where your effort sits — every session, every rep.

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Vivid Colour

Each zone rendered in bold, distinctive colour. At a glance you know your zone — no squinting at numbers mid-workout.

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Built for Athletes

Whether you train by heart rate, power, or pace — Zonelight adapts to your metrics and your sport.

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On-Device

No accounts required. Your training data stays on your device — private, fast, and always available.

Getting started with Zonelight takes under a minute.

Step 01

Download & Open

Download Zonelight from the App Store and open it. No account or sign-in needed to get started.

Step 02

Set Your Zones

Enter your training zone thresholds — heart rate, power, or pace ranges — to match how you already train.

Step 03

Train & Glance

During your session, Zonelight shows your current zone in vivid colour. No maths, no second-guessing — just your zone, instantly.

Step 04

Review Your Session

After training, see a breakdown of time spent in each zone. Understand your effort distribution and track progression over time.

What training metrics does Zonelight support? +
Zonelight is designed to work with heart rate, power, and pace-based training zones. Check the app for the full list of supported metrics and zone systems.
Does Zonelight need an internet connection? +
No — Zonelight works entirely on-device. No internet connection is required during training.
Does it require a subscription or account? +
No account is required. Check the App Store listing for the current pricing and any in-app purchase details.
Which sports is it designed for? +
Zonelight suits any sport where zone-based training is used — running, cycling, swimming, and more. If you train to zones, it works for you.
Does it work with Apple Watch? +
Check the App Store listing for the latest compatibility details — requirements and platform support are updated with each release.

Need help or want to share feedback? Here's how to reach us.

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Email Support

Direct line to the developer. Usually responded to within 1–2 business days.

Email Us
💬

Contact Form

Send a detailed message with your device info and issue description.

Open Form
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App Store Review

Enjoying Zonelight? A review makes a real difference for an independent app.

Leave a Review

When reporting a bug, please include:

  • Your iPhone model (e.g. iPhone 15 Pro)
  • iOS version (Settings → General → About)
  • App version (Settings → General → iPhone Storage → Zonelight)
  • Steps to reproduce the issue
  • Screenshots if possible