# CCC STUDY Diary vs Allergapp

The clearest difference is update cadence: Allergapp at every 5 days against CCC STUDY Diary's fortnightly. Allergapp also leads on iOS requirement (11.0 vs 15.0). 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.

CCC STUDY Diary ships an update fortnightly, Allergapp every 5 days. The most recent releases landed on September 13, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | CCC STUDY Diary | Allergapp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Size | 26 MB | 46 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [ClinCompetence Cologne GmbH](https://appshunter.io/developer/1565156244) | [greenrw company s.l](https://appshunter.io/developer/1690229250) |

## What reviewers say

### CCC STUDY Diary

[App page](https://appshunter.io/ios/app/ccc-study-diary/id6443583026)

**In-app purchases:** none


### Allergapp

[App page](https://appshunter.io/ios/app/allergapp/id6449749974)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CCC STUDY Diary free?

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

### Is Allergapp free?

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

### Do CCC STUDY Diary or Allergapp have ads?

Neither CCC STUDY Diary nor Allergapp shows ads.

### Which is updated more often, CCC STUDY Diary or Allergapp?

CCC STUDY Diary ships an update fortnightly, and Allergapp every 5 days. Most recently, CCC STUDY Diary was updated on September 13, 2026 and Allergapp on September 17, 2026.

---

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