Is there a Thendoo phone app?

Not in the App Store or Google Play yet. Native apps for iPhone and Android are planned, with voice capture, widgets, a share sheet and notifications that work with the app closed.

You can use Thendoo on your phone today:

1. Open app.thendoo.com in your phone’s browser and sign in.
2. Add it to your home screen. In Safari, tap Share → Add to Home Screen. In Chrome, tap ⋮ → Add to Home screen or Install app.
3. It opens full screen like an app, with Today, Calendar, Tasks and Inbox around a capture button.

The phone layout is built in, so lists, the Today timeline and quick capture fit a small screen. What you can’t get yet are the things that need a native app, such as reminders when the app is fully closed and home-screen widgets.