What this app can and cannot do for you.
An app that refuses to overstate the weather should not overstate itself either. This page lists the accessibility features GRAT supports, how each one was measured, and the one place it is still not good enough.
Supported today
Not claimed yet
Why colour is never the message
Roughly one man in twelve cannot reliably tell green, amber and red apart. A storm warning that depends on which colour the badge is would be invisible to them at exactly the moment it matters. So in GRAT the colour is the last cue, never the only one: SAFE carries a tick, WATCH a warning triangle, DANGER a lightning bolt, and each one is written out in words beside it.
Where it still falls short
The radar map has no spoken summary. The playback controls and the timestamp are reachable with VoiceOver, but the rainfall on the map itself is not described aloud. If you cannot see the map, you cannot tell from GRAT where the rain is sitting.
The map is built on a Metal and MapKit layer that is deliberately frozen — it is the most fragile code in the app and the part that has crashed on real devices before. Describing the radar aloud means touching it. We would rather say this plainly than claim VoiceOver support the map does not earn.
Everything else — the dashboard, Companion Mode, settings, history, onboarding and the guide — is navigable with VoiceOver today.
How this was measured
Contrast is not judged by eye. Every colour pair in the app is checked by a script against the WCAG AA thresholds, in light and dark, and a failure stops the build. The text sizes were walked through the five accessibility sizes screen by screen. The icon-and-word rule for risk levels is enforced by an automated test that fails if any two levels ever share a symbol. None of this proves the app is usable for you — only that the measurable parts measure up.
Tell us where it fails
If something in GRAT is unusable for you, that is a defect and it is worth more to this project than a download. Write to support@gratweather.com and say what you were trying to do and what the app did instead. One person reads that address and replies.
This statement covers GRAT for iPhone and Apple Watch, version 1.0 and later, and was last reviewed on 15 October 2026. It is reviewed again with every release that changes the interface.