# Know• — Menstrual Cycle Tracker

> Menstrual cycle tracker with symptom logging, calendar view, and educational content. (iPhone/iPad app by Darin Armstrong.)

- Source: https://appshunter.io/ios/app/know/id1478928294 (this page in markdown: same URL + `.md`)
- Developer: [Darin Armstrong](https://appshunter.io/developer/1478678290)
- Category: Health & Fitness
- Price: Free
- Rating: 3.75/5 from 8 App Store ratings · 3 written reviews indexed
- Age rating: 12+
- Requires: iOS 12.4 · 4 MB
- Languages: English
- Released: 2019-09-06
- Data updated: 2026-10-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/know/id1478928294/reviews.md

## What is Know?

Know is a period tracker that provides a platform for you to track information about your cycle.
- Conveniently log symptoms you are experiencing
- View cycle information in multiple views including calendar
- Biometric security allows for protected access
- Access to general information regarding menstruation, fertility, and ovulation.

## Key features

- Log symptoms
- Calendar view
- Biometric security
- Fertility tracking
- Ovulation tracking
- Menstruation information

## Is Know safe?

Not enough ratings yet to assess Know.

## Is Know legit?

Know• is no longer available in the App Store. The AppsHunter Legitimacy Score for Know is 35 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/know/id1478928294/reviews.md

### 1/5 — Can’t save my data!

*2022-04-29*

Every time I close the app, I have to start over.

### 2/5 — Memory issues

*2022-03-27*

The app resets every time I open it as if I’m a new user. There isn’t much point having a tracking app that doesn’t track.

**Developer response:** I’m sorry you’re having trouble. The data is handled by iCloud. You may need to check your storage limit or iCloud permissions for the application to allow the app to save your data. You may also want to try reinstalling. I hope that helps!

### 5/5 — Best tracker so far for trans teen

*2022-03-06*

There’s so many menstrual tracking apps but they’re always so feminine and make such a big deal. For a FTM trans teen, this causes even more dysphoria. This app is very subtle, not super feminine, and very simple. It’s the best app I’ve found and I’m grateful for it. I absolutely recommend this app for other trans/non-binary people.

## Frequently asked questions about Know

### What is Know•?

Know• is a period tracker designed to help users log symptoms, view cycle information in a calendar, and access general information about menstruation, fertility, and ovulation.

### What devices does Know• support?

Know• is available for iPhone and iPod devices.

### What is the age rating for Know•?

Know• has an age rating of 12+, making it suitable for teenagers and older.

### How accurate is Know• for tracking cycles?

The app allows users to log symptoms and view cycle information, but specific data on prediction accuracy based on user input is not provided.

### Does Know• integrate with other health apps?

The provided information does not mention any integrations with other health platforms or devices.

### When was Know• last updated?

Know• was last updated on September 6, 2019, with version 1.0.

### What do users like about Know•?

User reviews indicate a rating of 3.8 stars from 8 ratings, suggesting a generally positive but mixed reception.

### Is Know• free to use?

Yes, Know• is available for free download and use, with no in-app purchases or subscriptions mentioned.

## Version history (last 1 release)

### 1.0 — 2019-09-06

No release notes.

## Apps similar to Know

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Period Tracker & Woman Health](https://appshunter.io/ios/app/period-tracker-and-woman-health/id1576530568) | 4.3 (3) | Free | Health & Fitness |
| [Blood: Period & Cycle Tracker](https://appshunter.io/ios/app/blood-period-and-cycle-tracker/id1426237949) | 4.7 (188) | Free | Health & Fitness |
| [Period Tracker: Cycle Calendar](https://appshunter.io/ios/app/period-tracker-cycle-calendar/id1541331292) | 4.6 (144) | Free | Health & Fitness |
| [One Period Tracker & My Health](https://appshunter.io/ios/app/one-period-tracker-and-my-health/id1502266408) | 4.8 (300) | Free | Health & Fitness |
| [Period Diary: Privacy First](https://appshunter.io/ios/app/period-diary-privacy-first/id1021545958) | 4.1 (429) | Free | Health & Fitness |
| [Period - period tracker](https://appshunter.io/ios/app/period-period-tracker/id1477337270) | 4.6 (537) | Free | Health & Fitness |

## More apps by Darin Armstrong

- [Park City Premier](https://appshunter.io/ios/app/park-city-premier/id6760720333)

All apps by Darin Armstrong: https://appshunter.io/developer/1478678290

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-29.*