# DuDa vs Allergy Diary

The clearest difference is ads: DuDa at none against Allergy Diary's shown. Allergy Diary's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.6). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | DuDa | Allergy Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Weekly | — |
| Size | 62 MB | 37 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jinho Park](https://appshunter.io/developer/1685319231) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## What reviewers say

### DuDa

[App page](https://appshunter.io/ios/app/duda-hives-diary/id6702012028)

**In-app purchases:** none


### Allergy Diary

[App page](https://appshunter.io/ios/app/allergy-diary-symptom-tracker/id6780486739)

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

**In-app purchases:** none


## Frequently asked questions

### Is DuDa free?

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

### Is Allergy Diary free?

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

### Do DuDa or Allergy Diary have ads?

Allergy Diary shows ads; DuDa does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*