Can I get a photo slideshow without opening an app?

Effectively yes — Bubbles In Time is a slow-motion slideshow scattered through your day: one floating memory at a time, over whatever you're doing, no app-opening required after setup.

The longer answer

The best slideshow is the one that plays itself, one frame per hour, forever.

How Bubbles In Time handles it

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.