# HerPhase vs Stackful

The clearest difference is in-app purchases: HerPhase at none against Stackful's 1. HerPhase also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Stackful sells 1 one-off in-app purchase. HerPhase asks for nothing beyond the download.

## The numbers

| Metric | HerPhase | Stackful |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (17 ratings)](https://appshunter.io/ios/app/herphase-period-tracker/id6759829011/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | Free | — |
| Size | 63 MB | 3 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [yagmur tezcan](https://appshunter.io/developer/1863116091) | [Espen Lund](https://appshunter.io/developer/6809542875) |

## What reviewers say

### HerPhase

[App page](https://appshunter.io/ios/app/herphase-period-tracker/id6759829011)

Easily understand and manage your menstrual cycle with this intuitive tracker. Log symptoms, view predictions for your period and fertile windows, and access cycle insights in a clean calendar interface. Your data is kept private on your device.

**Highlights:** Period and cycle tracking, Predicted next period and fertile window, Daily symptom and mood logging, Cycle statistics and insights, Simple calendar view, Privacy-focused data storage

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

**In-app purchases:** none


### Stackful

[App page](https://appshunter.io/ios/app/stackful-supplement-stock/id6811653860)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackful Plus | $6.99 | one-time |


## Frequently asked questions

### Is HerPhase free?

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

### Is Stackful free?

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

### Do HerPhase or Stackful have ads?

Neither HerPhase nor Stackful 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.*