# Kluchi vs must be one

The clearest difference is in-app purchases: must be one at none against Kluchi's 1. Kluchi's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Kluchi sells 1 one-off in-app purchase. must be one asks for nothing beyond the download.

Kluchi ships an update every 3 weeks, must be one every 5 weeks. The most recent releases landed on October 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Kluchi | must be one |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kluchi/id1182879708/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 6 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maxim Polous](https://appshunter.io/developer/560072891) | [office-canard games](https://appshunter.io/developer/6793797221) |

## What reviewers say

### Kluchi

[App page](https://appshunter.io/ios/app/kluchi/id1182879708)

This puzzle game challenges players to strategically place all keys onto a table. Utilize unique key connectors and special "neighbors" mechanics to solve increasingly complex arrangements. Hints are available to assist when you get stuck.

**Highlights:** Key placement puzzle, Unique connector mechanics, Special 'neighbors' keys, Hint system, Brain training benefits, New puzzle type

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 9 hints | $0.99 | one-time |


### must be one

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

**In-app purchases:** none


## Frequently asked questions

### Is Kluchi free?

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

### Is must be one free?

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

### Do Kluchi or must be one have ads?

must be one shows ads; Kluchi does not.

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

Kluchi ships an update every 3 weeks, and must be one every 5 weeks. Most recently, Kluchi was updated on October 29, 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.*