For teachers: twenty years of classes, floating back
Teachers photograph milestones for two decades — class photos, projects, graduations — and the archive scatters across old phones and drives.
The fit
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.
Consolidate the keepers to your current phone and let the rotation resurface careers-worth of classrooms. The 2009 class floating up in 2026 is its own kind of pension.
Making it work
Bubbles In Time runs on Android 7.0 and up, costs $2.99 once, and has no subscription, no ads and no in-app purchases.
Summer project, one hour: gather, choose, add. Then September through June, the good years visit on their own.
The mechanics, briefly
Bubbles In Time floats chosen photos, videos, and message threads over any app on a modern Android phone — intervals from 30 minutes to 4 hours, a Mystery Photo option for surprise, and one switch to pause everything. It's $2.99 once, with no subscription, no ads, no account, and nothing uploaded anywhere, which tends to be exactly the requirement list for teachers.
Quick answers
Why does Bubbles In Time suit teachers?
Zero-maintenance architecture: no account to manage, no subscription to lapse, no cloud to fail — a five-minute setup, then memories float on their own.
Is Bubbles In Time really a one-time purchase?
Yes — $2.99 once on Google Play. No subscription, no ads, no in-app purchases.
Can I control how often memories appear?
Yes — intervals from every 30 minutes to every 4 hours, plus a master pause switch.