# KnowWhen vs Perimenopause Tracker Diary

The clearest difference is price: Perimenopause Tracker Diary at Free against KnowWhen's $4.99. KnowWhen's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement there is nothing between them.

Perimenopause Tracker Diary is free to download; KnowWhen costs $4.99 up front. Perimenopause Tracker Diary sells 3 in-app purchases, starting at $9.99 per month. KnowWhen asks for nothing beyond the download.

KnowWhen ships an update every 3 months, Perimenopause Tracker Diary every 2 months. The most recent releases landed on November 6, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | KnowWhen | Perimenopause Tracker Diary |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knowwhen/id6758948095/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 6 MB | 9 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | +17 | 12+ |
| Developer | [Launch Round](https://appshunter.io/developer/1580265297) | [Jacob Hendrik Huisman](https://appshunter.io/developer/1851170550) |

## What reviewers say

### KnowWhen

[App page](https://appshunter.io/ios/app/knowwhen/id6758948095)

This app offers simple, timely guidance for husbands based on their partner's cycle. It helps users understand when to offer support, listen, or give space, fostering better connection and reducing relationship tension.

**Highlights:** Daily simple guidance, Phase-based reminders, Private logging for patterns, Discreet data storage on device, Guidance on giving space, Guidance on offering support

**In-app purchases:** none


### Perimenopause Tracker Diary

[App page](https://appshunter.io/ios/app/perimenopause-tracker-diary/id6794629742)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $9.99 | per month |
| Premium Yearly | $49.99 | per year |
| Premium Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is KnowWhen free?

KnowWhen costs $4.99, with no in-app purchases.

### Is Perimenopause Tracker Diary free?

Perimenopause Tracker Diary is free to download, with in-app purchases available.

### Do KnowWhen or Perimenopause Tracker Diary have ads?

Neither KnowWhen nor Perimenopause Tracker Diary shows ads.

### Which is updated more often, KnowWhen or Perimenopause Tracker Diary?

KnowWhen ships an update every 3 months, and Perimenopause Tracker Diary every 2 months. Most recently, KnowWhen was updated on November 6, 2026 and Perimenopause Tracker Diary on November 13, 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.*