# Space Odyssey vs CircleMap

The clearest difference is price: CircleMap at Free against Space Odyssey's $2.99. CircleMap also leads on update cadence (daily vs every 19 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

CircleMap is free to download; Space Odyssey costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Space Odyssey ships an update every 19 months, CircleMap daily. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Space Odyssey | CircleMap |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/circlemap/id6749683203/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Daily** |
| Monetization | — | Free |
| Size | 55 MB | 29 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DigiGalaxy](https://appshunter.io/developer/1470420175) | [Supparsorn Wantarnagon](https://appshunter.io/developer/1800705021) |

## What reviewers say

### Space Odyssey

[App page](https://appshunter.io/ios/app/space-odyssey-explore-and-learn/id1526966960)

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

**In-app purchases:** none


### CircleMap

[App page](https://appshunter.io/ios/app/circlemap/id6749683203)

This app makes learning the unit circle and polar graphs interactive and fun. It offers customizable quizzes for angles, radians, and coordinates, along with a mode to visualize polar equations in both polar and Cartesian systems. It's designed to build confidence and speed in trigonometry and calculus.

**Highlights:** Interactive unit circle quizzes, Customizable angle and radian practice, Polar equation input and graphing, Dual polar and Cartesian visualization, Real-time graph exploration, Instant feedback and score tracking

**In-app purchases:** none


## Frequently asked questions

### Is Space Odyssey free?

Space Odyssey costs $2.99, with no in-app purchases.

### Is CircleMap free?

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

### Do Space Odyssey or CircleMap have ads?

Neither Space Odyssey nor CircleMap shows ads.

### Which is updated more often, Space Odyssey or CircleMap?

Space Odyssey ships an update every 19 months, and CircleMap daily. Most recently, Space Odyssey was updated on November 7, 2026 and CircleMap on November 5, 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.*