# LiquidMath vs Memory Kings

The clearest difference is in-app purchases: LiquidMath at none against Memory Kings's 3. LiquidMath also leads on ads (none vs shown). Memory Kings's advantage is update cadence (every 6 days vs every 3 months) and iOS requirement (11.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Memory Kings sells 3 one-off in-app purchases. LiquidMath asks for nothing beyond the download.

LiquidMath ships an update every 3 months, Memory Kings every 6 days. The most recent releases landed on June 1, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | LiquidMath | Memory Kings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/liquidmath-math-in-motion/id1633144492/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 0 MB | 101 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Soltan Adel](https://appshunter.io/developer/1633144494) | [Peter Koning](https://appshunter.io/developer/1676832719) |

## What reviewers say

### LiquidMath

[App page](https://appshunter.io/ios/app/liquidmath-math-in-motion/id1633144492)

Engage with quick math exercises through a fluid, colorful interface. Enjoy fully offline gameplay with no ads or in-app purchases. Experience math in a new dimension on Apple Vision Pro.

**Highlights:** Liquid Swipe Interface, Expressive Color Palettes, Bite-Sized Math Exercises, Fully Offline Gameplay, Ad-Free Experience, Apple Vision Pro Support

**In-app purchases:** none


### Memory Kings

[App page](https://appshunter.io/ios/app/memory-kings/id6473804571)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bag of 500 coins | $0.99 | one-time |
| Bag of 1,000 coins | $1.99 | one-time |
| Bag of 2,000 coins | $2.99 | one-time |


## Frequently asked questions

### Is LiquidMath free?

LiquidMath is free to download, with no in-app purchases.

### Is Memory Kings free?

Memory Kings is free to download, with in-app purchases available.

### Do LiquidMath or Memory Kings have ads?

Memory Kings shows ads; LiquidMath does not.

### Which is updated more often, LiquidMath or Memory Kings?

LiquidMath ships an update every 3 months, and Memory Kings every 6 days. Most recently, LiquidMath was updated on June 1, 2026 and Memory Kings on September 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*