# FlipSum: Memory Math — Memorize cards, hit the target

> Memorize cards, hit the target (iPhone/iPad app by Wei Zhang.)

- Source: https://appshunter.io/ios/app/flipsum-memory-math/id6825262039 (this page in markdown: same URL + `.md`)
- Developer: [Wei Zhang](https://appshunter.io/developer/1838971495)
- Category: Games, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.6 · 32 MB
- Languages: French (France), German (Germany), American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan), Korean, European Spanish, Italian, Japanese, Brazilian Portuguese
- Released: 2026-10-29
- Data updated: 2026-10-31

## What is FlipSum?

FlipSum is a memory and mental-math card game with the soul of an old tarot deck.

Numbered cards are dealt face up. Study them for a few seconds — then they flip over. A target number appears: find the two hidden cards that make it. Get it right and the pair vanishes in a burst of smoke. Get it wrong and the clock punishes you. Clear the table, earn up to three stars, and move on.

HOW IT GROWS
• 7 stages: addition, subtraction, add & subtract, multiplication, add & multiply, subtract & multiply, and all three together — in mixed stages you choose the operator too
• In every stage the table grows from 4 cards to 9, with more rounds as you go
• 6 cycles, each with its own color — emerald, violet, copper, silver, gold and diamond — bringing bigger numbers, shorter memorize times and tighter star times
• 252 levels and nearly 1,900 rounds, plus Endless mode

STARS & REWARDS
• Up to three stars per round for speed and accuracy
• Peek: earn a quick second look by stringing together three-star rounds
• The Star Book keeps every round you have played — replay any of them to chase three stars
• Game Center leaderboards for total score and highest level

ATMOSPHERE
• Ornate antique card backs with slowly growing gilded vines
• Magical smoke, gold dust and a giant falling star at the end of every round
• Original, mysterious background music
• Available in 10 languages

FAIR AND SIMPLE
Addition is free forever. One small one-time purchase unlocks every other stage, all six cycles and Endless mode. No ads. No subscriptions.

A great daily workout for working memory and quick arithmetic — for kids, students and grown-ups alike.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock Full Game | $0.99 | one-time |


## Is FlipSum safe?

Not enough ratings yet to assess FlipSum.

## Is FlipSum legit?

FlipSum: Memory Math appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for FlipSum is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1 — 2026-10-30

What’s new in FlipSum 1.1:

• Up to 4 players: each player keeps their own level, score, stars and Peeks. Tap the name plaque under the title to switch or add players.
• iCloud sync: progress and stars are saved to iCloud, so they come back after reinstalling and follow you to your other devices.
• Game Center: choose which player’s scores go to the leaderboards.
• Try again: with 5 mistakes, or if a round takes far too long, it starts over so you can give it another go.
• Star Book: if you earned 2 or more stars in a round, tap the next round to keep playing right away.

Your existing progress and stars are kept.

### 1.0 — 2026-10-30

No release notes.

## More apps by Wei Zhang

- [Class Fee Calc](https://appshunter.io/ios/app/class-fee-calc/id6764729815)
- [Voiary - AI Note Taker](https://appshunter.io/ios/app/voiary-ai-note-taker/id6791646723)

All apps by Wei Zhang: https://appshunter.io/developer/1838971495

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*