Is there a 'one photo a day' style memory app?

Set Bubbles In Time to its 4-hour interval and you get a slow-drip version — a few memories a day, or effectively one per stretch of the day, from the set you curated.

The longer answer

Bubbles In Time is the Android app this applies to — your own photos drifting over any app, on-device, $2.99 once with no subscription, no ads and no cloud.

The slow drip beats the flood: at a few per day, every photo still gets its moment.

How Bubbles In Time handles it

Bubbles In Time uses Android's display-over-other-apps permission (SYSTEM_ALERT_WINDOW) to float your photos above whatever you're doing, then get out of the way.

Add the photos, videos, or message threads that matter to the in-app gallery, grant the one-time overlay permission, and pick a frequency from every 30 minutes to every 4 hours. From then on, memory bubbles drift over whatever you're doing — tap to open, swipe to dismiss, pause the whole layer with one switch whenever you need stillness. Everything runs on-device: no account, no uploads, no ads, $2.99 once.

Worth knowing

The rotation rewards curation over volume — twenty photos you love beat two hundred you tolerated. The Mystery Photo option keeps genuine surprise in the mix, and because nothing depends on a server, the whole experience works identically offline, abroad, and on every modern Android phone.