# Space Gate vs ReadMate

The clearest difference is price: ReadMate at Free against Space Gate's $12.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ReadMate is free to download; Space Gate costs $12.99 up front. Space Gate sells 3 in-app purchases, starting at $2.99 per month and ReadMate sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Space Gate | ReadMate |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | **[4.8 (201 ratings)](https://appshunter.io/ios/app/space-gate-ar-solar-system/id6474214531/reviews)** | — |
| Number of ratings | **201** | — |
| Positive reviews | 85.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 156 MB | 68 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ali Samaei](https://appshunter.io/developer/1721049950) | [Everonx](https://appshunter.io/developer/6789786341) |

## What reviewers say

### Space Gate

[App page](https://appshunter.io/ios/app/space-gate-ar-solar-system/id6474214531)

Explore the universe with interactive 3D and AR experiences of the solar system. Discover celestial bodies, engage with live astronomy news, and even interact with black holes. Tailored for learning and education.

**Highlights:** 3D and AR solar system exploration, Interactive black hole simulations, Live astronomy magazine, Educational celestial catalogs, Capture and save celestial snapshots

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Annual Subscription | $6.99 | per year |
| Lifetime Subscription | $12.99 | one-time |

**What reviewers like**

- 🎨 Stunning 3D graphics and visual quality
- 🌍 Immersive AR experience for exploring planets
- 📚 Comprehensive educational content about space
- 🎓 Excellent tool for teachers and students
- 📸 Screenshot/snapshot capture functionality

**What reviewers complain about**

- 💰 Misleading free-to-play pricing model
- 🔒 Unexpected in-app purchase charges
- 🎮 Unintuitive navigation and UI
- 🐛 Orbital mechanics inaccuracies
- 🌙 Moon tidal locking not correctly simulated

**Reported bugs**

- Moon not tidally locked to Earth
- Moon orbiting Earth in wrong direction
- Planets orbiting sun in opposing/incorrect directions
- Uranus moons glitched
- Venus orbital speed faster than Mercury

**Requested features**

- Ability to set any planet as immobile center point
- More free planets without paywall
- Additional galaxies beyond solar system
- Toggle for planet/moon/star name labels
- Time-lapse function with variable speeds


### ReadMate

[App page](https://appshunter.io/ios/app/readmate/id6796101920)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadMate 크레딧 1,000 | $1.99 | one-time |
| ReadMate 크레딧 3,000 | $3.99 | one-time |


## Frequently asked questions

### Is Space Gate free?

Space Gate costs $12.99, and also offers in-app purchases.

### Is ReadMate free?

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

### Do Space Gate or ReadMate have ads?

Neither Space Gate nor ReadMate shows ads.

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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.*