# Perim vs niiGma

The clearest difference is update cadence: niiGma at every 11 days against Perim's every 5 weeks. niiGma also leads on iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Perim sells 3 in-app purchases, starting at $9.99 per 7 days and niiGma sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Perim ships an update every 5 weeks, niiGma every 11 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Perim | niiGma |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 11 days** |
| Size | 59 MB | 86 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [GOKTUG CETIN](https://appshunter.io/developer/1792437913) | [Hybek Generic Inc.](https://appshunter.io/developer/6787985604) |

## What reviewers say

### Perim

[App page](https://appshunter.io/ios/app/perim-perimenopause-tracker/id6768767994)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access Pro | $9.99 | per 7 days |
| Perim Pro Yearly | $49.99 | per year |
| Perim Pro Yearly Subscription | $49.99 | per year |


### niiGma

[App page](https://appshunter.io/ios/app/niigma/id6787985601)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| niiGma Pro Monthly | $0.99 | per month |
| niiGma Pro Yearly | $0.99 | per year |


## Frequently asked questions

### Is Perim free?

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

### Is niiGma free?

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

### Do Perim or niiGma have ads?

Neither Perim nor niiGma shows ads.

### Which is updated more often, Perim or niiGma?

Perim ships an update every 5 weeks, and niiGma every 11 days. Most recently, Perim was updated on October 16, 2026 and niiGma on October 7, 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.*