# One Is Odd vs Donut Shift

The clearest difference is in-app purchases: Donut Shift at none against One Is Odd's 1. One Is Odd's advantage is update cadence (every 10 days vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. One Is Odd sells 1 one-off in-app purchase. Donut Shift asks for nothing beyond the download.

One Is Odd ships an update every 10 days, Donut Shift every 5 months. The most recent releases landed on September 14, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | One Is Odd | Donut Shift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/one-is-odd/id1660806446/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 591 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Chapman](https://appshunter.io/developer/435328057) | [Henrique Silva](https://appshunter.io/developer/492945915) |

## What reviewers say

### One Is Odd

[App page](https://appshunter.io/ios/app/one-is-odd/id1660806446)

Challenge your observation skills by finding the unique item among a set of similar objects. With numerous themes and levels, the game offers a fresh experience each time. Compete with others on leaderboards or play at your own pace.

**Highlights:** Variety of themes, Challenging levels, Moving items, Game Center leaderboards, Relaxing gameplay

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 40 Themes & No Ads | $1.99 | one-time |


### Donut Shift

[App page](https://appshunter.io/ios/app/donut-shift/id6478875564)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One Is Odd free?

One Is Odd is free to download, with in-app purchases available.

### Is Donut Shift free?

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

### Do One Is Odd or Donut Shift have ads?

Both One Is Odd and Donut Shift show ads.

### Which is updated more often, One Is Odd or Donut Shift?

One Is Odd ships an update every 10 days, and Donut Shift every 5 months. Most recently, One Is Odd was updated on September 14, 2026 and Donut Shift on September 13, 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.*