Momentez is a free app for Android and iPhone: a few times a day, at a random moment, one question, "What's good right now?". Answers to the common questions are here. If yours is not, write to hello@momentez.com.
The question does not arrive
Check that notifications are allowed for Momentez in your phone's settings and that the questions are not paused: in the app, Menu → "Pause". Questions come only within the hours you picked (9:00 to 22:00 by default), at a random minute. To see one at once, open Menu and tap "Ask a question now": the next question arrives as a notification within a few seconds.
How to save your notes or move them to another phone
In Menu → "Move to another phone": "Save an archive" on the old phone, "Load an archive" on the new one. The file stays with you: the app sends nothing to the network. Photos are not in the archive, but shots taken with the camera in the app are also in the phone's gallery by default.
How to edit or delete a note
Press and hold a note in the feed: "Edit", "Delete" and "Select" appear. "Select" lets you mark several notes and delete them together; right after deleting there is "Undo".
Where "Write to the developer" goes
Your own mail app opens with an empty message to hello@momentez.com. The app version and the system version are already filled in; whether to send it is up to you.
Contact
Any question: hello@momentez.com. How data is handled is on the privacy policy page.