# PDF Translator & Translate vs Letter Explainer

The clearest difference is update cadence: Letter Explainer at every 5 days against PDF Translator & Translate's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF Translator & Translate sells 3 one-off in-app purchases and Letter Explainer sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

PDF Translator & Translate ships an update every 2 weeks, Letter Explainer every 5 days. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | PDF Translator & Translate | Letter Explainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 11 MB | 22 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Berat Genc](https://appshunter.io/developer/1833911134) | [Armen Ter-Oganezov](https://appshunter.io/developer/1723150483) |

## What reviewers say

### PDF Translator & Translate

[App page](https://appshunter.io/ios/app/pdf-translator-and-translate/id6759189050)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ten Pages | $1.99 | one-time |
| Fifty Page | $5.99 | one-time |
| Hundred Page | $7.99 | one-time |


### Letter Explainer

[App page](https://appshunter.io/ios/app/letter-explainer-postklar/id6816644992)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Postklar Pro Monthly | $3.99 | per month |
| Postklar Pro Yearly | $24.99 | per year |
| 5 Scans | $2.99 | one-time |


## Frequently asked questions

### Is PDF Translator & Translate free?

PDF Translator & Translate is free to download, with in-app purchases available.

### Is Letter Explainer free?

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

### Do PDF Translator & Translate or Letter Explainer have ads?

Neither PDF Translator & Translate nor Letter Explainer shows ads.

### Which is updated more often, PDF Translator & Translate or Letter Explainer?

PDF Translator & Translate ships an update every 2 weeks, and Letter Explainer every 5 days. Most recently, PDF Translator & Translate was updated on November 9, 2026 and Letter Explainer on November 6, 2026.

---

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