MemoryMark lets you leave a memory at a real place for someone you care about. Pin a photo, a message or a voice message to a spot on the map, choose who can open it, and it stays locked until they are actually standing there.

HOW IT WORKS
• Pick a place on the map and set an unlock radius (30, 50 or 100 m).
• Add a photo from your camera, write a message, or record a voice message.
• Choose the friends who can unlock it, from your contacts.
• Decide whether the first friend to arrive opens it, or everyone has to be there.
• Your friend gets a notification. When they walk into the radius, the memory opens.

THINGS TO TRY
• A birthday message hidden at the café where you first met.
• A treasure hunt across town for the kids.
• A note at the airport gate for someone flying home.
• A memory at your old school for a friend you grew up with.

FEATURES
• Map of memories near you, with a padlock on each one until you reach it.
• Inbox of memories left for you, with the distance to each.
• Turn-by-turn navigation to a locked memory.
• Optional "lock again when leaving", so a memory can only be read on the spot.
• Reply to a memory once it is open.
• Optional background notifications when you come near a locked memory, even with the app closed (needs "Allow all the time" location, which you can switch off any time).
• Achievements for memories created and discovered.
• Your location is never shared with other users; it is only compared against the pins of memories addressed to you.

Sign in with your phone number. MemoryMark is also available on iPhone, so you can leave memories for friends on either platform.