Built as a gift. Free for every teacher.
My closest friend is a teacher. Her school runs a rotating block schedule, which means her days don't repeat weekly — and her alarm app had no idea. A student who goes to the nurse at the same time every A-day, a club that only meets on certain days — each one meant another alarm to flip on or off by hand, depending on what day it was. She kept separate notes just to know which alarms to toggle each morning.
I'm a software developer. After watching that routine one too many times, I spent six months building her an alarm app that actually understands rotating schedules. You tell it your rotation and your term dates once, and it works out the rest of the year — alarms fire only on the days they apply, and a snow day is one tap that undoes itself by tomorrow morning.
The notes are gone. And now the app is on both app stores, free for any teacher who needs it.
Why it's free — and tracks nothing
Tools for teachers shouldn't cost an arm and a leg, and they shouldn't pay for themselves with your data. ScheduleLock was a gift, and it stays one: there are no ads, no subscriptions, no account to create, and no analytics watching you. The app is fully offline — your schedule lives on your device and never leaves it. There isn't even a server it could phone home to.
If ScheduleLock ever earns money, it will be from school districts deploying it for their staff — never from individual teachers, and never from data. The free tier is permanent.
What that means in practice
- Free forever for teachers.No trial, no paywall, no "pro" tier holding features hostage.
- No account. Install it, set your rotation, done.
- No tracking. Zero analytics, zero ads, zero data collection — see the privacy policy, it's a short read.
- 100% offline. Works in a dead zone, on a plane, or in a classroom with terrible Wi-Fi.
What's next
ScheduleLock is actively developed. On the roadmap for this summer: preprogrammed school holidays, shareable bell schedules — one teacher builds the schedule and colleagues import it — and schedule sharing for substitute teachers.
Questions, ideas, or a schedule type it doesn't handle yet? I'd genuinely like to hear about it — her requests shaped half of what's in the app, and yours will shape what's next. See the press page for how to reach me.
— Hunter, developer of ScheduleLock