# Letter vs NumRush

The clearest difference is ads: NumRush at none against Letter's shown. Letter's advantage is iOS requirement (13.0 vs 17.6). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Letter sells 1 one-off in-app purchase and NumRush sells 2 in-app purchases, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

Letter ships an update every 3 days, NumRush every 2 days. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Letter | NumRush |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/letter-shuffle/id6741996059/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 87 MB | 24 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [adam rogan](https://appshunter.io/developer/837572905) | [Whimseed Studio Private Limited](https://appshunter.io/developer/1668117901) |

## What reviewers say

### Letter

[App page](https://appshunter.io/ios/app/letter-shuffle/id6741996059)

Test your word skills with daily challenges and anagram puzzles. Unscramble words of varying lengths, from three to eleven letters, using simple tap-to-swap controls. Compete on leaderboards or race against the clock to boost your vocabulary and brainpower.

**Highlights:** Daily word challenges, Anagram puzzles (3-11 letters), Challenge Mode leaderboard, Quick Words timed mode, Tap-to-swap controls, Vocabulary and brain training

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### NumRush

[App page](https://appshunter.io/ios/app/numrush-countdown-puzzle-game/id6743640522)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $2.99 | per year |
| Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is Letter free?

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

### Is NumRush free?

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

### Do Letter or NumRush have ads?

Letter shows ads; NumRush does not.

### Which is updated more often, Letter or NumRush?

Letter ships an update every 3 days, and NumRush every 2 days. Most recently, Letter was updated on October 12, 2026 and NumRush on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*