# KnowWhen vs Cycl

The clearest difference is price: Cycl at Free against KnowWhen's $4.99. Cycl also leads on update cadence (every 5 days vs every 3 months) and ratings volume (4 vs 1). KnowWhen's advantage is in-app purchases (none vs 2) and iOS requirement (18.0 vs 26.0). On rating, review sentiment, ads and device support there is nothing between them.

Cycl is free to download; KnowWhen costs $4.99 up front. Cycl sells 2 in-app purchases, starting at $4.99 per month. KnowWhen asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for KnowWhen against 5.0 for Cycl. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

KnowWhen ships an update every 3 months, Cycl every 5 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KnowWhen | Cycl |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/knowwhen/id6758948095/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/cycl-supplement-tracker/id6762581850/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 6 MB | 20 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Launch Round](https://appshunter.io/developer/1580265297) | [Justin Shieh](https://appshunter.io/developer/1894741669) |

## 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


### Cycl

[App page](https://appshunter.io/ios/app/cycl-supplement-tracker/id6762581850)

This app personalizes your daily supplement intake based on your menstrual cycle phase. It offers cycle-aware scheduling, conflict detection for interactions, and phase-adaptive recommendations. Track your doses with reminders for a smarter approach to self-care.

**Highlights:** Cycle-aware supplement scheduling, Supplement interaction conflict detection, Phase-adaptive recommendations, Dose tracking with reminders, Personalized daily supplement stack

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cycl Pro - Monthly | $4.99 | per month |
| Cycl Pro - Yearly | $29.99 | per year |


## Frequently asked questions

### Is KnowWhen free?

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

### Is Cycl free?

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

### Which has better reviews, KnowWhen or Cycl?

KnowWhen and Cycl are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do KnowWhen or Cycl have ads?

Neither KnowWhen nor Cycl shows ads.

### Which is updated more often, KnowWhen or Cycl?

KnowWhen ships an update every 3 months, and Cycl every 5 days. Most recently, KnowWhen was updated on October 24, 2026 and Cycl on October 31, 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.*