# Mailinblack vs F4.0 LDC

The clearest difference is update cadence: Mailinblack at every 3 weeks against F4.0 LDC's every 4 months. F4.0 LDC's advantage is iOS requirement (16.0 vs 18.0). 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.

Mailinblack ships an update every 3 weeks, F4.0 LDC every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Mailinblack | F4.0 LDC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 99 MB | 35 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Mailinblack](https://appshunter.io/developer/1465120919) | [Altitude Cherbourg](https://appshunter.io/developer/512464175) |

## What reviewers say

### Mailinblack

[App page](https://appshunter.io/ios/app/mailinblack/id6464315792)

**In-app purchases:** none


### F4.0 LDC

[App page](https://appshunter.io/ios/app/f40-ldc/id6472884672)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mailinblack free?

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

### Is F4.0 LDC free?

F4.0 LDC is free to download, with no in-app purchases.

### Do Mailinblack or F4.0 LDC have ads?

Neither Mailinblack nor F4.0 LDC shows ads.

### Which is updated more often, Mailinblack or F4.0 LDC?

Mailinblack ships an update every 3 weeks, and F4.0 LDC every 4 months. Most recently, Mailinblack was updated on November 3, 2026 and F4.0 LDC on October 30, 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.*