Install Nubi on Android

Nubi isn't on Google Play yet. You install it straight from here in a few steps:

Download Nubi
  1. Tap the button above. If Chrome warns you, choose to download anyway.
  2. When it finishes, tap “Open” (or open nubi.apk from Downloads).
  3. If the phone says it cannot install apps from this source, tap “Settings”, turn on “Allow from this source”, then go back.
  4. Tap “Install”, then “Open”.
  5. If Google Play Protect appears, tap “More details”, then “Install anyway”. Nubi just isn't on Google Play yet.
  6. In Nubi, tap “I was invited” and type the code you received.

On iPhone, Nubi is installed through TestFlight. Ask the person who invited you for the TestFlight link.