# AsterKit vs Niah

The clearest difference is in-app purchases: Niah at none against AsterKit's 1. Niah also leads on update cadence (every 2 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

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

AsterKit ships an update every 2 weeks, Niah every 2 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | AsterKit | Niah |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/niah-private-period-tracker/id6784382605/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | — | Free |
| Size | 43 MB | 9 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Ryan Gonzalez](https://appshunter.io/developer/6772702194) | [Hazem Abdeltawab](https://appshunter.io/developer/1881647056) |

## What reviewers say

### AsterKit

[App page](https://appshunter.io/ios/app/asterkit/id6772702192)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AsterKit Premium | $4.99 | one-time |


### Niah

[App page](https://appshunter.io/ios/app/niah-private-period-tracker/id6784382605)

This app offers private period and cycle tracking, logging symptoms, mood, and providing accurate predictions for your next period and fertile window. It learns your rhythm, handles irregular cycles, and keeps all your data securely on your device.

**Highlights:** Private data storage on device, Offline tracking functionality, Accurate period and fertile window predictions, Symptom and mood logging, Irregular cycle support, Apple Health sync, Apple Watch app and widgets

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AsterKit free?

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

### Is Niah free?

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

### Do AsterKit or Niah have ads?

Neither AsterKit nor Niah shows ads.

### Which is updated more often, AsterKit or Niah?

AsterKit ships an update every 2 weeks, and Niah every 2 days. Most recently, AsterKit was updated on October 24, 2026 and Niah on October 24, 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.*