# Letterain vs Number Fortress

The clearest difference is in-app purchases: Letterain at none against Number Fortress's 4. Number Fortress's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Number Fortress sells 4 one-off in-app purchases. Letterain asks for nothing beyond the download.

## The numbers

| Metric | Letterain | Number Fortress |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/letterain/id6782162896/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cloud Design Studio LLC](https://appshunter.io/developer/6775021944) | [Efe OZTURK](https://appshunter.io/developer/6794749845) |

## What reviewers say

### Letterain

[App page](https://appshunter.io/ios/app/letterain/id6782162896)

Catch falling letters to build words against the clock. This fast-paced word game sharpens your mind while offering themed worlds and challenging friends. Master word-building under pressure to climb global leaderboards.

**Highlights:** Catch falling letters, Build real words (3+ letters), Race against the clock, 10 themed worlds, Challenge friends with identical letter drops, Global Game Center leaderboards, Backed by ENABLE word list

**Features:** Family Sharing

**In-app purchases:** none


### Number Fortress

[App page](https://appshunter.io/ios/app/number-fortress-quick-math/id6800875357)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pouch | $1.99 | one-time |
| Observer Pouch | $3.99 | one-time |
| Astronomer Pouch | $5.99 | one-time |
| Unlimited Hints | $7.99 | one-time |


## Frequently asked questions

### Is Letterain free?

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

### Is Number Fortress free?

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

### Do Letterain or Number Fortress have ads?

Letterain shows ads; Number Fortress does not.

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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.*