# Her Four Weeks vs Vitalync

The clearest difference is update cadence: Vitalync at every 9 days against Her Four Weeks's every 3 months. Her Four Weeks's advantage is iOS requirement (16.6 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Her Four Weeks sells 1 one-off in-app purchase and Vitalync sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Her Four Weeks ships an update every 3 months, Vitalync every 9 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Her Four Weeks | Vitalync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 3 MB | 34 MB |
| Requires iOS | **16.6** | 18.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [阳 孙](https://appshunter.io/developer/1518808403) | [尧 齐](https://appshunter.io/developer/1865331229) |

## What reviewers say

### Her Four Weeks

[App page](https://appshunter.io/ios/app/her-four-weeks-partner-care/id6755909874)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久会员 | $0.99 | one-time |


### Vitalync

[App page](https://appshunter.io/ios/app/vitalync/id6760963569)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ROOT Monthly | $1.99 | per month |
| ROOT Annual | $9.99 | per year |
| ROOT Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Her Four Weeks free?

Her Four Weeks is free to download, with in-app purchases available.

### Is Vitalync free?

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

### Do Her Four Weeks or Vitalync have ads?

Neither Her Four Weeks nor Vitalync shows ads.

### Which is updated more often, Her Four Weeks or Vitalync?

Her Four Weeks ships an update every 3 months, and Vitalync every 9 days. Most recently, Her Four Weeks was updated on October 25, 2026 and Vitalync on October 31, 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.*