# LiquidMath vs Astro Invaders

The clearest difference is in-app purchases: LiquidMath at none against Astro Invaders's 6. LiquidMath also leads on ads (none vs shown) and ratings volume (7 vs 1). Astro Invaders's advantage is update cadence (weekly vs every 3 months) and iOS requirement (13.0 vs 17.0). On price, rating and device support there is nothing between them.

Both are free to download. Astro Invaders sells 6 one-off in-app purchases. LiquidMath asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for LiquidMath against 5.0 for Astro Invaders. That said, the two scores are not equally well evidenced: LiquidMath has 7 ratings behind it against 1, so its average is the more settled of the two.

LiquidMath ships an update every 3 months, Astro Invaders weekly. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | LiquidMath | Astro Invaders |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/liquidmath-math-in-motion/id1633144492/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/astro-invaders/id6751432275/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 0 MB | 110 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Soltan Adel](https://appshunter.io/developer/1633144494) | [Sang Yoon Lee](https://appshunter.io/developer/1639696646) |

## 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


### Astro Invaders

[App page](https://appshunter.io/ios/app/astro-invaders/id6751432275)

Experience an intense arcade space battle with simple controls. Upgrade your ship to rapidly grow stronger and defeat challenging bosses. Uncover a lasting story through 21 boss encounters.

**Highlights:** Simple movement and shooting controls, Intense space battles, Ship upgrades for rapid growth, 21 boss battles, Uncover a lasting story, Casual action and rail shooter mechanics

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Ad Skip | $0.99 | one-time |
| 10000 Bit Pack | $0.99 | one-time |
| Super Bit Pack | $1.99 | one-time |
| Mega Bit Pack | $2.99 | one-time |
| 50000 Bit Pack | $2.99 | one-time |
| 150000 Bit Pack | $4.99 | one-time |


## Frequently asked questions

### Is LiquidMath free?

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

### Is Astro Invaders free?

Astro Invaders is free to download, with in-app purchases available.

### Which has better reviews, LiquidMath or Astro Invaders?

LiquidMath and Astro Invaders are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.

### Do LiquidMath or Astro Invaders have ads?

Astro Invaders shows ads; LiquidMath does not.

### Which is updated more often, LiquidMath or Astro Invaders?

LiquidMath ships an update every 3 months, and Astro Invaders weekly. Most recently, LiquidMath was updated on October 4, 2026 and Astro Invaders on October 2, 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.*