# Ripple Effect vs must be one

The clearest difference is ads: Ripple Effect at none against must be one's shown. Ripple Effect also leads on iOS requirement (8.0 vs 15.6). must be one's advantage is update cadence (every 5 weeks vs every 24 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ripple Effect ships an update every 24 months, must be one every 5 weeks. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Ripple Effect | must be one |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ripple-effect/id1139541148/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 30.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 24 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 16 MB | 6 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuki Fujimoto](https://appshunter.io/developer/467085185) | [office-canard games](https://appshunter.io/developer/6793797221) |

## What reviewers say

### Ripple Effect

[App page](https://appshunter.io/ios/app/ripple-effect/id1139541148)

A logic puzzle game where players fill grids with consecutive integers based on room size. It features rules about number placement to ensure separation between identical digits in rows and columns.

**Highlights:** Consecutive integer placement, Room-based puzzle mechanics, Row and column separation rules, Challenging logic puzzles, Grid-based gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### must be one

[App page](https://appshunter.io/ios/app/must-be-one/id6794124997)

**In-app purchases:** none


## Frequently asked questions

### Is Ripple Effect free?

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

### Is must be one free?

must be one is free to download, with no in-app purchases.

### Do Ripple Effect or must be one have ads?

must be one shows ads; Ripple Effect does not.

### Which is updated more often, Ripple Effect or must be one?

Ripple Effect ships an update every 24 months, and must be one every 5 weeks. Most recently, Ripple Effect was updated on October 11, 2026 and must be one on October 6, 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.*