# AxisFlow vs Perim

The clearest difference is iOS requirement: AxisFlow at 15.1 against Perim's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. AxisFlow sells 3 in-app purchases, starting at $3.99 per 7 days and Perim sells 3 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

AxisFlow ships an update monthly, Perim every 5 weeks. The most recent releases landed on November 5, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | AxisFlow | Perim |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 67 MB | 59 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Ihsan Ahmad](https://appshunter.io/developer/1281244828) | [GOKTUG CETIN](https://appshunter.io/developer/1792437913) |

## What reviewers say

### AxisFlow

[App page](https://appshunter.io/ios/app/axisflow-period-tracker-log/id6766893381)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $3.99 | per 7 days |
| Premium Monthly | $12.99 | per month |
| Premium Yearly | $99.99 | per year |


### 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 |


## Frequently asked questions

### Is AxisFlow free?

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

### Is Perim free?

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

### Do AxisFlow or Perim have ads?

Neither AxisFlow nor Perim shows ads.

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

AxisFlow ships an update monthly, and Perim every 5 weeks. Most recently, AxisFlow was updated on November 5, 2026 and Perim on October 28, 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.*