# day by day vs Mon Châtillon

The clearest difference is device support: day by day at 3 against Mon Châtillon's —. On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

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

day by day ships an update every 4 weeks, Mon Châtillon every 6 weeks. The most recent releases landed on September 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | day by day | Mon Châtillon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 4 weeks** | Every 6 weeks |
| Size | 19 MB | 41 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [MY RETAIL BOX](https://appshunter.io/developer/1503530509) | [COMMUNE DE CHATILLON](https://appshunter.io/developer/1673973037) |

## What reviewers say

### day by day

[App page](https://appshunter.io/ios/app/day-by-day/id1503530510)

**Features:** macOS Compatibility

**In-app purchases:** none


### Mon Châtillon

[App page](https://appshunter.io/ios/app/mon-chatillon/id6445820062)

**In-app purchases:** none


## Frequently asked questions

### Is day by day free?

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

### Is Mon Châtillon free?

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

### Which is updated more often, day by day or Mon Châtillon?

day by day ships an update every 4 weeks, and Mon Châtillon every 6 weeks. Most recently, day by day was updated on September 30, 2026 and Mon Châtillon on October 9, 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.*