# Rapid Eye Test vs Corto

The clearest difference is ads: Corto at none against Rapid Eye Test's shown. Corto also leads on update cadence (every 6 days vs every 3 months). Rapid Eye Test's advantage is iOS requirement (15.0 vs 26.4). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Rapid Eye Test sells 1 one-off in-app purchase and Corto sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Rapid Eye Test ships an update every 3 months, Corto every 6 days. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Rapid Eye Test | Corto |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/corto-geography-map-game/id6786200231/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 142 MB | 111 MB |
| Requires iOS | **15.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NURI YANG](https://appshunter.io/developer/1667210977) | [Xander van Baarsen](https://appshunter.io/developer/6781697935) |

## What reviewers say

### Rapid Eye Test

[App page](https://appshunter.io/ios/app/rapid-eye-test-hyper-peepers/id6446809775)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Corto

[App page](https://appshunter.io/ios/app/corto-geography-map-game/id6786200231)

Test your geography skills by quickly and accurately locating places on a world map. Earn points for speed and precision, and unlock a variety of themed quizzes to expand your knowledge. Challenge friends in head-to-head matches and compete on global leaderboards.

**Highlights:** Locate places on a world map, Timed quizzes for accuracy and speed, Unlock themed quizzes, Head-to-head challenges with friends, Daily and weekly quiz sets, Global leaderboards

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Members Only 1 | $0.49 | one-time |
| Members Only 3 | $0.49 | one-time |
| Milan | $0.49 | one-time |
| Munich | $0.49 | one-time |
| Utrecht | $0.49 | one-time |
| Hamburg | $0.49 | one-time |
| Lyon | $0.49 | one-time |
| Corps Unlock | $1.99 | one-time |
| Eerie Earth Unlock | $2.99 | one-time |
| Complete Unlock: All Packs | $8.99 | one-time |


## Frequently asked questions

### Is Rapid Eye Test free?

Rapid Eye Test is free to download, with in-app purchases available.

### Is Corto free?

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

### Do Rapid Eye Test or Corto have ads?

Rapid Eye Test shows ads; Corto does not.

### Which is updated more often, Rapid Eye Test or Corto?

Rapid Eye Test ships an update every 3 months, and Corto every 6 days. Most recently, Rapid Eye Test was updated on October 25, 2026 and Corto 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.*