# AllergAI vs Period Simple

AllergAI and Period Simple are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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.

## The numbers

| Metric | AllergAI | Period Simple |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 9 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [ADD Enterprises LLC](https://appshunter.io/developer/6780715697) | [Wei Nie](https://appshunter.io/developer/6795550036) |

## What reviewers say

### AllergAI

[App page](https://appshunter.io/ios/app/allergai/id6780715695)

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

**In-app purchases:** none


### Period Simple

[App page](https://appshunter.io/ios/app/period-simple/id6795550034)

**In-app purchases:** none


## Frequently asked questions

### Is AllergAI free?

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

### Is Period Simple free?

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

### Do AllergAI or Period Simple have ads?

Neither AllergAI nor Period Simple shows ads.

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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.*