Sumipon: Lock Screen To-Do is made and published by
Sang Huynh.
AppBrain is an independent app data site and isn't affiliated with Sang Huynh.
The app name, icon, screenshots and description belong to Sang Huynh and are shown as
published on the App Store.
About Sumipon: Lock Screen To-Do
Sumipon: Lock Screen To-Do is a productivity app developed by Sang Huynh.
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App Information
Sumipon: Lock Screen To-Do is freely available from the App Store. The app size is 22.41 MB. The latest version available is 1.0. The last update was on October 30, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since October 2026.
Description by Sang Huynh(from the App Store)
Sumipon puts your to-do list where you already look: the lock screen.
Type a short task in seconds. The app opens with the cursor ready, and you can also start from Control Center, the Action button, or Siri ("Add a task").
LOCK SCREEN - Lock screen widgets: a rectangular list with tap-to-stamp, a circular progress ring, and an inline line - A list wallpaper image you can export, or update automatically with a Shortcuts automation (Set Wallpaper) - Optional Live Activity for "today focus" on the lock screen
A note on iPhone limits: when the phone is locked, widget buttons work after Face ID unlock. That is an Apple rule, not something an app can change.
DONE MEANS DONE Finish a task and Pon the red panda gives it a red 済 hanko stamp. Tasks you finish never come back by mistake. Made a mistake? Undo it. You can also reorder, rename, and delete with undo. The Stamp Book shows what you finished, and Pon levels up as you collect stamps.
PRIVATE AND SIMPLE - Works offline - No account, no data collected - English and Japanese
FREE TO USE, ONE-TIME UNLOCK The core to-do list and lock screen widgets are free. "Sumipon Pro" is a one-time purchase (no subscription) that unlocks all wallpaper styles, Live Activity, more than one list, and history export.
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