# Rail Shuffle vs ONO

The clearest difference is in-app purchases: Rail Shuffle at none against ONO's 1. Rail Shuffle also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). ONO's advantage is update cadence (every 2 months vs every 41 months). On price and device support there is nothing between them.

Both are free to download. ONO sells 1 one-off in-app purchase. Rail Shuffle asks for nothing beyond the download.

Rail Shuffle ships an update every 41 months, ONO every 2 months. The most recent releases landed on March 12, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Rail Shuffle | ONO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/ono-think-straight/id1533608908/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 41 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 95 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eweguo AB](https://appshunter.io/developer/305628259) | [Real Maxwell LLC](https://appshunter.io/developer/1296946363) |

## What reviewers say

### Rail Shuffle

[App page](https://appshunter.io/ios/app/rail-shuffle/id517793019)

**Features:** macOS Compatibility

**In-app purchases:** none


### ONO

[App page](https://appshunter.io/ios/app/ono-think-straight/id1533608908)

A unique logic puzzle game where you clear 'O's from the screen to achieve 'ONO'. It offers a hybrid casual puzzle experience with increasing complexity and variety. Designed to improve clarity, focus, and working memory through engaging gameplay.

**Highlights:** Unique logic puzzle mechanics, Chain reaction gameplay, Hybrid casual puzzle experience, Improves clarity and focus, 24 levels with increasing difficulty, Free play mode, Thousands of puzzle variations

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

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


## Frequently asked questions

### Is Rail Shuffle free?

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

### Is ONO free?

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

### Do Rail Shuffle or ONO have ads?

ONO shows ads; Rail Shuffle does not.

### Which is updated more often, Rail Shuffle or ONO?

Rail Shuffle ships an update every 41 months, and ONO every 2 months. Most recently, Rail Shuffle was updated on March 12, 2026 and ONO on September 10, 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.*