# Write a letter vs Rex Time Switch

The clearest difference is in-app purchases: Rex Time Switch at none against Write a letter's 3. Rex Time Switch also leads on iOS requirement (10.0 vs 26.0). Write a letter's advantage is update cadence (every 3 months vs every 18 months). On price, ads and device support there is nothing between them.

Both are free to download. Write a letter sells 3 in-app purchases, starting at $2.99 per month. Rex Time Switch asks for nothing beyond the download.

Write a letter ships an update every 3 months, Rex Time Switch every 18 months. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Write a letter | Rex Time Switch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (19 ratings)](https://appshunter.io/ios/app/write-a-letter/id912523076/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 26.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 18 months |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 77 MB |
| Requires iOS | 26.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jan-Hendrik Damerau](https://appshunter.io/developer/725299865) | [Legrand](https://appshunter.io/developer/357003650) |

## What reviewers say

### Write a letter

[App page](https://appshunter.io/ios/app/write-a-letter/id912523076)

Create professional letters quickly and easily. Save them as PDFs for emailing, printing, or sharing. Customize your letters with formatting, templates, and fonts to match your style.

**Highlights:** Professional letter creation, PDF export, Email, print, and share options, Customizable templates, Text formatting, Signature integration, Sender address management

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Annual Premium | $22.99 | per year |
| Lifetime Premium | $39.99 | one-time |


### Rex Time Switch

[App page](https://appshunter.io/ios/app/rex-time-switch/id1509933102)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Write a letter free?

Write a letter is free to download, with in-app purchases available.

### Is Rex Time Switch free?

Rex Time Switch is free to download, with no in-app purchases.

### Do Write a letter or Rex Time Switch have ads?

Neither Write a letter nor Rex Time Switch shows ads.

### Which is updated more often, Write a letter or Rex Time Switch?

Write a letter ships an update every 3 months, and Rex Time Switch every 18 months. Most recently, Write a letter was updated on October 10, 2026 and Rex Time Switch on October 2, 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.*