# Only One vs Number Memory

The clearest difference is price: Number Memory at Free against Only One's $0.99. Number Memory also leads on update cadence (weekly vs every 39 months). Only One's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Number Memory is free to download; Only One costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Only One ships an update every 39 months, Number Memory weekly. The most recent releases landed on November 3, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Only One | Number Memory |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/only-one-a-logic-puzzle/id1619099640/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 39 months | **Weekly** |
| Monetization | Paid | — |
| Size | 65 MB | 27 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kofi Austin](https://appshunter.io/developer/1495016623) | [Iclal KABATAS](https://appshunter.io/developer/1896019931) |

## What reviewers say

### Only One

[App page](https://appshunter.io/ios/app/only-one-a-logic-puzzle/id1619099640)

This is a minimalist logic puzzle game where each level requires you to find a unique solution related to the number one. Explore diverse puzzles and receive hints if you get stuck for over 45 seconds.

**Highlights:** Minimalist logic puzzles, Unique solutions per level, Theme based on the number one, Variety of fun puzzles, In-game hints after 45 seconds

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

**In-app purchases:** none


### Number Memory

[App page](https://appshunter.io/ios/app/number-memory-brain-age-test/id6770123794)

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

**In-app purchases:** none


## Frequently asked questions

### Is Only One free?

Only One costs $0.99, with no in-app purchases.

### Is Number Memory free?

Number Memory is free to download, with no in-app purchases.

### Do Only One or Number Memory have ads?

Number Memory shows ads; Only One does not.

### Which is updated more often, Only One or Number Memory?

Only One ships an update every 39 months, and Number Memory weekly. Most recently, Only One was updated on November 3, 2026 and Number Memory on October 20, 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.*