A little help at the desk.

Learn the rules, find a way through a blocked route, or get help with Extra Routes.

How to play

Match. Read the delivery order from left to right. Tap a pile when its front stamp matches the next stamp's symbol and name.
Stash. When Stash is available, choose it and tap a pile with a nonmatching front stamp. It waits in the Drawer's single slot. Send the stashed stamp when it is next in the delivery order to free the slot for another stamp.
Flip. When Flip is available, choose it and tap a nonempty pile. Its order flips. You have one Flip per route.

Open Learn on the home screen for three short, replayable lessons. Open Routes to choose a puzzle. Undo, Restart and hints are always free.

Common questions

My route is blocked. What can I do?

Tap Hint for help in three stages: a concept, a useful target, then the exact next move. If there is no solution from here, Undo a move or restart the attempt.

What does Extra Routes include?

The first 30 of 300 routes are free. Evening Post unlocks routes 31–60; Priority Post unlocks routes 61–90. Extra Routes unlocks all 270 paid routes, including both smaller packs. All purchases are permanent, with no subscription. Smaller packs contain the same puzzles as Extra Routes; earlier purchases are not credited toward its price. The app shows Apple's current localized price before purchase.

How do I restore Extra Routes?

Open Routes on the home screen and select a route marked Paid. In The post shop, choose Restore purchases using the Apple Account that bought the pack. A connection to Apple may be needed. If nothing is found, check that account and try again.

Where is my progress saved?

Your current route, move history, delivered routes and sound/haptic settings are saved locally on this device. There is no cloud sync. Deleting the app can remove local progress. Replaying a delivered route does not erase its completed status.

Can I play without an account?

Yes. Stamp Shift has no in-app login or advertising. Apple handles any purchase authentication and payment. Help & privacy in the app shows whether purchase analytics are enabled in your build. Read the privacy policy for details about builds that enable purchase analytics.

Tell me where you got stuck.

Email support@buildwithblum.com. Include the route, what you expected, what happened, your device/iOS version and app version. Please don't send passwords or payment details.

With a route open, choose Help & privacy → Share puzzle information. Review the route title/ID, delivery order progress, move count and history, and app version/build in Apple's share sheet. You decide whether to send it and to whom. Nothing is sent to me automatically.