FlipSum Support
Need help with FlipSum: Memory Math? You’ll find answers to common questions below.
Contact us
Email Edge.Apps@hotmail.com. Please include your device model, iOS version and a short description of the problem. We’ll get back to you as soon as we can.
Frequently asked questions
How do I play?
Memorize the cards while they are face up. When they flip over, a target number appears: tap the two hidden cards that make it. In mixed stages, also choose the operator (+, −, ×). Clear every card to finish the round.
How are stars awarded?
Three stars: no mistakes and finished within the star time. Two stars: up to two mistakes, or no mistakes but slower. One star: more than two mistakes. Using a Peek limits that round to two stars.
What is Peek?
Peek turns the hidden cards face up for a moment. You start with one Peek and earn another every time you get three three-star rounds in a row.
What does the purchase unlock?
Addition (Levels 1–6) is free. A single one-time purchase unlocks every other stage, all six cycles and Endless mode. There are no ads and no subscriptions.
I already paid, but the game is locked
Make sure you are signed in with the same Apple Account you used to buy. Open Settings in FlipSum and tap Restore Purchases. After reinstalling, the purchase is usually restored automatically. If a family member must approve the purchase (Ask to Buy), the game unlocks by itself once it is approved.
How do I get a refund?
Purchases are handled by Apple. You can request a refund at reportaproblem.apple.com.
My progress is gone
Progress, stars and settings are stored only on your device, so they are removed when you delete the app and are not shared between devices. Your purchase is kept by Apple and can always be restored.
My score is not on the leaderboard
Check that you are signed in to Game Center (Settings › Game Center on your iPhone). New scores can take a few minutes to appear.
Can I replay a round?
Yes. The Star Book lists every round you have played; tap one to replay it and chase three stars. Replays update your stars but do not add to your score.
How do I turn off music or vibration?
Open Settings in FlipSum. You can switch music on or off, change its volume, and turn haptics on or off. The music also follows your iPhone’s silent switch.
How do I start over?
On the home screen, tap New Game. This clears your progress and star records. Your purchase is not affected.