# 1F vs Mail Haus Pro

The clearest difference is update cadence: Mail Haus Pro at every 4 days against 1F's every 6 weeks. Mail Haus Pro also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

1F ships an update every 6 weeks, Mail Haus Pro every 4 days. The most recent releases landed on October 20, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 1F | Mail Haus Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/1fmail/id1308758192/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 10 MB | 10 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Первая Форма](https://appshunter.io/developer/1088420807) | [Empty Box Media LLC](https://appshunter.io/developer/433671375) |

## What reviewers say

### 1F

[App page](https://appshunter.io/ios/app/1fmail/id1308758192)

A business-focused email client offering secure and fast communication. It includes integrated calendar, contacts, and secure notes, with a rich mail composer supporting attachments and formatting.

**Highlights:** Secure email client, Integrated calendar, Contact management, Secure notes, Rich mail composer, Media attachments

**Features:** macOS Compatibility

**In-app purchases:** none


### Mail Haus Pro

[App page](https://appshunter.io/ios/app/mail-haus-pro-customer-app/id6711330123)

**In-app purchases:** none


## Frequently asked questions

### Is 1F free?

1F is free to download, with no in-app purchases.

### Is Mail Haus Pro free?

Mail Haus Pro is free to download, with no in-app purchases.

### Do 1F or Mail Haus Pro have ads?

Neither 1F nor Mail Haus Pro shows ads.

### Which is updated more often, 1F or Mail Haus Pro?

1F ships an update every 6 weeks, and Mail Haus Pro every 4 days. Most recently, 1F was updated on October 20, 2026 and Mail Haus Pro on October 27, 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.*