# AC vs LetterRack

The clearest difference is in-app purchases: AC at none against LetterRack's 3. AC also leads on iOS requirement (18.0 vs 26.4). On price, ads and device support there is nothing between them.

Both are free to download. LetterRack sells 3 in-app purchases, starting at $3.99 per month. AC asks for nothing beyond the download.

## The numbers

| Metric | AC | LetterRack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 73 MB | 28 MB |
| Requires iOS | **18.0** | 26.4 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Feiyu Chang](https://appshunter.io/developer/1492595678) | [Vincent Launay](https://appshunter.io/developer/1198218316) |

## What reviewers say

### AC

[App page](https://appshunter.io/ios/app/ac-calculator/id6760001106)

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

**In-app purchases:** none


### LetterRack

[App page](https://appshunter.io/ios/app/letterrack/id6764377699)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Xtremagic Pass | $3.99 | per month |
| Xtremagic Pass | $24.99 | per year |
| Full Access (One-Time Purchase) | $7.99 | one-time |


## Frequently asked questions

### Is AC free?

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

### Is LetterRack free?

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

### Do AC or LetterRack have ads?

Neither AC nor LetterRack shows ads.

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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.*