A minimalistic note-taking app utilizing your phone's notification area:

• Take notes and save them as notifications
• Edit pinned notices
• Delete pins
• Hide notes for a specific period of time

The app was built with Material Design in mind.

All notes are stored in the app's database and survive reboots.

Start the app to create a new pin.

• Enter the text you want to display in the notification.
• There's a number in a semicircle - that's the number of hours:minutes that the pin will wait for if snoozed. Tap it to change the time.
• The semicircle acts as a slider and adjusts the snooze time.
• Click the circular pin button to create your pin.
• Click the small clock icon on the right will create the pin and immediately snooze it.

When a pin is shown as a notification you can:

• tap Done - this will delete the pin.
• tap Snooze - this will make it go away for the configured time period.
• tap Edit - use this to change the snooze time or title of the pin.

You can cause all pins - including the snoozed ones - to show as notifications by pressing and holding the semicircular snooze time button on the main interface.

Pins are unlocked by default, that means that you can swipe the group notification away which snoozes all pins at once.

This also happens if all notifications are cleared. To prevent this you can lock your pins so that the group notification and the individual notes it contains can't be swiped away.¹

Press and hold on the app icon to open the app shortcut to access a list of all the pins that are available.

• Tap on an entry to edit the pin
• Tap and hold to copy the pin to clipboard

If your pins do not reappear directly after start-up, open the app because on some devices p!n may not be able to start in background. In this case try to enable 'Autostart' or disable some battery optimizations for this application.

A good resource for more information on this topic and solutions for various devices I have found here.