# HormoneSync vs Aster

The clearest difference is in-app purchases: HormoneSync at none against Aster's 2. HormoneSync also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Aster sells 2 in-app purchases, starting at $3.99 per month. HormoneSync asks for nothing beyond the download.

## The numbers

| Metric | HormoneSync | Aster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 31 MB | 2 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Tolga Erdem](https://appshunter.io/developer/6790568395) | [Gradatim Pty Ltd](https://appshunter.io/developer/6792458445) |

## What reviewers say

### HormoneSync

[App page](https://appshunter.io/ios/app/hormonesync-menopause-log/id6790568393)

**Features:** macOS Compatibility

**In-app purchases:** none


### Aster

[App page](https://appshunter.io/ios/app/aster-endometriosis-tracker/id6792458443)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aster Premium Monthly | $3.99 | per month |
| Aster Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is HormoneSync free?

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

### Is Aster free?

Aster is free to download, with in-app purchases available.

### Do HormoneSync or Aster have ads?

Neither HormoneSync nor Aster 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.*