# Circle and Sphere Pro vs Space Gate

The clearest difference is price: Circle and Sphere Pro at $2.99 against Space Gate's $12.99. Circle and Sphere Pro also leads on in-app purchases (none vs 3). Space Gate's advantage is update cadence (weekly vs monthly) and review sentiment (86% vs 67%). On rating, ads, device support and iOS requirement there is nothing between them.

Circle and Sphere Pro costs $2.99 and Space Gate $12.99 up front. Space Gate sells 3 in-app purchases, starting at $2.99 per month. Circle and Sphere Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Circle and Sphere Pro against 4.8 for Space Gate. That said, the two scores are not equally well evidenced: Space Gate has 202 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 67% of Circle and Sphere Pro's written reviews are positive against 86% of Space Gate's.

Circle and Sphere Pro ships an update monthly, Space Gate weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Circle and Sphere Pro | Space Gate |
| --- | --- | --- |
| Price | **$2.99** | $12.99 |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/circle-and-sphere-pro/id1564077280/reviews)** | [4.8 (202 ratings)](https://appshunter.io/ios/app/space-gate-ar-solar-system/id6474214531/reviews) |
| Number of ratings | 7 | **202** |
| Positive reviews | 66.7% of reviews | **85.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 180 MB | 156 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Ali Samaei](https://appshunter.io/developer/1721049950) |

## What reviewers say

### Circle and Sphere Pro

[App page](https://appshunter.io/ios/app/circle-and-sphere-pro/id1564077280)

This app calculates various geometric quantities for circles and spheres, including sectors and segments. It supports decimals and fractions, displays formulas and solutions step-by-step, and stores calculations in a history. Users can share their results.

**Highlights:** Calculates sphere and circle quantities, Supports sectors and segments, Shows formulas and step-by-step solutions, Handles decimals and fractions, Stores calculations in history, Allows sharing of results

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Circle and Sphere Pro free?

Circle and Sphere Pro costs $2.99, with no in-app purchases.

### Is Space Gate free?

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

### Which has better reviews, Circle and Sphere Pro or Space Gate?

Circle and Sphere Pro is rated higher. Circle and Sphere Pro averages 4.9 out of 5 from 7 ratings, while Space Gate averages 4.8 from 202 ratings.

### Do Circle and Sphere Pro or Space Gate have ads?

Neither Circle and Sphere Pro nor Space Gate shows ads.

### Which is updated more often, Circle and Sphere Pro or Space Gate?

Circle and Sphere Pro ships an update monthly, and Space Gate weekly. Most recently, Circle and Sphere Pro was updated on October 24, 2026 and Space Gate on October 24, 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.*