Lock Up Reminder app icon
Available now · iPhone & iPad

Did you lock
the door? Now you know.

Reminding you of the things you always forget to check.

You're already ten minutes down the road when it hits you: the back door, the garage, the stove. Lock Up Reminder gives every one of those a switch. Flip it as you leave, and the answer is waiting on your phone instead of gnawing at you all afternoon.

Build the checklist once around your own home — doors, garage, gate, car, mailbox, oven, alarm panel — then it's a single glance from then on.

Front door LOCKED
Garage CLOSED
Stove ON
Download on the App Store Free · iPhone & iPad
Lock Up Reminder home screen with Reminders, Configure Reminders and Settings
What it does

Four kinds of doubt, one list.

Every reminder is typed, so the labels match the thing you're actually checking.

Locked / UnlockedDoors, safe, padlock, deadbolt
On / OffStove, oven, iron, appliances
Open / ClosedGarage, gate, window, hatch
Armed / DisarmedAlarm system, security panel

Tap to toggle

A rotary deadbolt for locks, a rocker for appliances, a swinging door for anything that opens — each type gets its own physical toggle.

Built for your home

Start from ready-made types, then add doors, garages, cars and mailboxes in seconds.

No checking from the couch

Optionally require that you're actually near the door before a reminder can be marked checked, so the habit stays honest.

Make it yours

Nine accent colours plus a custom picker, and light or dark appearance to match the rest of your phone.

Every lock, one glance

The reminders list shows what's locked, open, on or armed across the whole house without a single tap.

Stays on your phone

No account, no cloud sync, and no connection to your locks, cameras or smart-home hardware — it isn't trying to control anything.

Screenshots

A checklist you'll actually use.

Scroll sideways to see more →

Lock Up Reminder home screen

Never forget to lock up

One tap to check the doors, garage, car and more.

Reminders list

Every lock, one glance

See what's locked, open or armed across your home.

Lock detail screen

Tap to toggle

A satisfying, physical way to lock and unlock.

Configure reminders screen

Built for your home

Add doors, garages, cars and mailboxes in seconds.

Settings screen with accent colours

Make it yours

Custom accent colours and light or dark appearance.

Turn back around, or don't.

Either way, you'll know. Lock Up Reminder is free on the App Store.