# Guess The Odd Game vs Echo

The clearest difference is in-app purchases: Guess The Odd Game at none against Echo's 1. Echo's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 10 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Echo sells 1 one-off in-app purchase. Guess The Odd Game asks for nothing beyond the download.

Guess The Odd Game ships an update every 10 months, Echo every 3 weeks. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Guess The Odd Game | Echo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Size | 8 MB | 8 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Claudio Souza Mattos](https://appshunter.io/developer/1774316937) | [Umut Corut](https://appshunter.io/developer/1618960320) |

## What reviewers say

### Guess The Odd Game

[App page](https://appshunter.io/ios/app/guess-the-odd-game/id6451344666)

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

**In-app purchases:** none


### Echo

[App page](https://appshunter.io/ios/app/echo-reflection/id6762794182)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game | $3.99 | one-time |


## Frequently asked questions

### Is Guess The Odd Game free?

Guess The Odd Game is free to download, with no in-app purchases.

### Is Echo free?

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

### Do Guess The Odd Game or Echo have ads?

Guess The Odd Game shows ads; Echo does not.

### Which is updated more often, Guess The Odd Game or Echo?

Guess The Odd Game ships an update every 10 months, and Echo every 3 weeks. Most recently, Guess The Odd Game was updated on October 13, 2026 and Echo on October 1, 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.*