# DocFather vs LetterMinder

The clearest difference is iOS requirement: DocFather at 17.6 against LetterMinder's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. DocFather sells 4 in-app purchases, starting at $2.99 per 7 days and LetterMinder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | DocFather | LetterMinder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 9 MB | 2 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Radzhab Radzhabov](https://appshunter.io/developer/1829311478) | [Nico Brandes](https://appshunter.io/developer/6821968867) |

## What reviewers say

### DocFather

[App page](https://appshunter.io/ios/app/docfather-ai-pdf-editor/id6804746387)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DocFather Lite Weekly | $2.99 | per 7 days |
| DocFather Pro Weekly | $5.99 | per 7 days |
| DocFather Lite Yearly | $34.99 | per year |
| DocFather Pro Yearly | $89.99 | per year |


### LetterMinder

[App page](https://appshunter.io/ios/app/letterminder/id6821968865)

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LetterMinder Premium | $9.99 | one-time |


## Frequently asked questions

### Is DocFather free?

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

### Is LetterMinder free?

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

### Do DocFather or LetterMinder have ads?

Neither DocFather nor LetterMinder 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.*