Tell us what you think

Horizon is built by one person, and each version is shaped by the people who use it. What's confusing, what's missing, what it gets wrong about your calendar: every message is read.

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From your iPhone

In Horizon, Settings › Support & Feedback writes an email with your app version, iOS version and device filled in. Rate Horizon, just below it, takes you to the App Store, where a review helps other people find the app.