# ATA Carnet vs MC Diary

ATA Carnet and MC Diary are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ATA Carnet | MC Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Size | 79 MB | 46 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CHAMBRE DE COMMERCE INTERNATIONALE](https://appshunter.io/developer/1459258242) | [Rusty Monkey LTD](https://appshunter.io/developer/513032740) |

## What reviewers say

### ATA Carnet

[App page](https://appshunter.io/ios/app/ata-carnet/id1470367115)

**Features:** Vision Pro support

**In-app purchases:** none


### MC Diary

[App page](https://appshunter.io/ios/app/mc-diary/id1521674380)

**In-app purchases:** none


## Frequently asked questions

### Is ATA Carnet free?

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

### Is MC Diary free?

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

### Do ATA Carnet or MC Diary have ads?

Neither ATA Carnet nor MC Diary shows ads.

### Which is updated more often, ATA Carnet or MC Diary?

ATA Carnet ships an update monthly, and MC Diary monthly. Most recently, ATA Carnet was updated on October 24, 2026 and MC Diary 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.*