# Abacus vs Space Explorer Academy

The clearest difference is price: Abacus at Free against Space Explorer Academy's $0.29. Abacus also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). On update cadence, ads and in-app purchases there is nothing between them.

Abacus is free to download; Space Explorer Academy costs $0.29 up front. Neither carries in-app purchases, so what you see is what you pay.

Abacus ships an update every 3 weeks, Space Explorer Academy monthly. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Abacus | Space Explorer Academy |
| --- | --- | --- |
| Price | **Free** | $0.29 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 12 MB | 8 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Phuc Huynh](https://appshunter.io/developer/6779869359) | [Sreedhar Lakshmanan](https://appshunter.io/developer/1677299144) |

## What reviewers say

### Abacus

[App page](https://appshunter.io/ios/app/abacus-bead-math/id6780208319)

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

**In-app purchases:** none


### Space Explorer Academy

[App page](https://appshunter.io/ios/app/space-explorer-academy/id6802367964)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Abacus free?

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

### Is Space Explorer Academy free?

Space Explorer Academy costs $0.29, with no in-app purchases.

### Do Abacus or Space Explorer Academy have ads?

Neither Abacus nor Space Explorer Academy shows ads.

### Which is updated more often, Abacus or Space Explorer Academy?

Abacus ships an update every 3 weeks, and Space Explorer Academy monthly. Most recently, Abacus was updated on September 22, 2026 and Space Explorer Academy on September 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.*