# AllergiApp vs Children Diary

The clearest difference is price: AllergiApp at Free against Children Diary's $4.99. AllergiApp also leads on iOS requirement (16.4 vs 18.0). Children Diary's advantage is ads (none vs shown). On update cadence, in-app purchases and device support there is nothing between them.

AllergiApp is free to download; Children Diary costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AllergiApp ships an update every 2 weeks, Children Diary every 9 days. The most recent releases landed on October 28, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | AllergiApp | Children Diary |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Size | 57 MB | 7 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Marta Di Muro](https://appshunter.io/developer/1875324483) | [Valgy](https://appshunter.io/developer/464576000) |

## What reviewers say

### AllergiApp

[App page](https://appshunter.io/ios/app/allergiapp/id6758859853)

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

**In-app purchases:** none


### Children Diary

[App page](https://appshunter.io/ios/app/children-diary/id6805601767)

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

**In-app purchases:** none


## Frequently asked questions

### Is AllergiApp free?

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

### Is Children Diary free?

Children Diary costs $4.99, with no in-app purchases.

### Do AllergiApp or Children Diary have ads?

AllergiApp shows ads; Children Diary does not.

### Which is updated more often, AllergiApp or Children Diary?

AllergiApp ships an update every 2 weeks, and Children Diary every 9 days. Most recently, AllergiApp was updated on October 28, 2026 and Children Diary on November 2, 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.*