# Amslux App vs Letter

The clearest difference is in-app purchases: Amslux App at none against Letter's 6. Amslux App also leads on iOS requirement (12.0 vs 16.4). Letter's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Letter sells 6 one-off in-app purchases. Amslux App asks for nothing beyond the download.

Amslux App ships an update every 3 weeks, Letter every 5 days. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Amslux App | Letter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 79 MB | 70 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Emmanuel Ntow](https://appshunter.io/developer/1785660294) | [VUNYO](https://appshunter.io/developer/1768332147) |

## What reviewers say

### Amslux App

[App page](https://appshunter.io/ios/app/amslux-app/id6744169104)

**In-app purchases:** none


### Letter

[App page](https://appshunter.io/ios/app/letter-write-send-post-mail/id6786452084)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Credit | $1.99 | one-time |
| Credit | $4.99 | one-time |
| Credit | $6.99 | one-time |
| Credit | $9.99 | one-time |
| Credit | $19.99 | one-time |
| Credit | $49.99 | one-time |


## Frequently asked questions

### Is Amslux App free?

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

### Is Letter free?

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

### Do Amslux App or Letter have ads?

Neither Amslux App nor Letter shows ads.

### Which is updated more often, Amslux App or Letter?

Amslux App ships an update every 3 weeks, and Letter every 5 days. Most recently, Amslux App was updated on October 25, 2026 and Letter on October 14, 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.*