# Number Cross vs Intergalactic Algebra

The clearest difference is in-app purchases: Number Cross at none against Intergalactic Algebra's 10. Intergalactic Algebra's advantage is update cadence (every 3 weeks vs every 5 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Intergalactic Algebra sells 10 one-off in-app purchases. Number Cross asks for nothing beyond the download.

Number Cross ships an update every 5 months, Intergalactic Algebra every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Number Cross | Intergalactic Algebra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/intergalactic-algebra/id1550524246/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 280 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jin Wang](https://appshunter.io/developer/894576808) | [Intergalactic Education LLC](https://appshunter.io/developer/1364648815) |

## What reviewers say

### Number Cross

[App page](https://appshunter.io/ios/app/number-cross-puzzle-game/id1029337155)

Engage your mind with a new number puzzle game that's easy to learn but difficult to master. Explore 60 levels with more on the way, enhanced by pleasant music and sound effects. Designed for both iPhone and iPad, this game offers tutorials to guide you through the challenges.

**Highlights:** Easy to play, challenging to win, Tutorials included, 60 levels with more coming, Pleasant music and sound effects, Supports iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


### Intergalactic Algebra

[App page](https://appshunter.io/ios/app/intergalactic-algebra/id1550524246)

Engage with algebra through a collection of space-themed games. Solve mathematical problems to launch rockets and advance your skills. The app aligns with Common Core standards and offers optional reports for progress analysis.

**Highlights:** Algebraic problem-solving, Rocket launching gameplay, Common Core aligned math, Proficiency assessment, Optional progress reports, Rewarding gameplay

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Factoring Rocket Report | $2.99 | one-time |
| Functions Rocket Report | $2.99 | one-time |
| Addition Subtraction Report | $2.99 | one-time |
| Multiples of Ten Report | $2.99 | one-time |
| Num Of Solutions Report | $2.99 | one-time |
| Quadratics Rocket Report | $2.99 | one-time |
| Rates of Change Report | $2.99 | one-time |
| Word Problems Rocket Report | $2.99 | one-time |
| Rocket Trivia Rocket Report | $2.99 | one-time |
| Progressions Report | $2.99 | one-time |


## Frequently asked questions

### Is Number Cross free?

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

### Is Intergalactic Algebra free?

Intergalactic Algebra is free to download, with in-app purchases available.

### Do Number Cross or Intergalactic Algebra have ads?

Neither Number Cross nor Intergalactic Algebra shows ads.

### Which is updated more often, Number Cross or Intergalactic Algebra?

Number Cross ships an update every 5 months, and Intergalactic Algebra every 3 weeks. Most recently, Number Cross was updated on November 1, 2026 and Intergalactic Algebra on November 3, 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.*