Crimson: Cycle & Fertility
Crimson: Cycle & Fertility is made and published by Ryan Martin. AppBrain is an independent app data site and isn't affiliated with Ryan Martin. The app name, icon, screenshots and description belong to Ryan Martin and are shown as published on the App Store.
AppBrain's verdict
- Rating on App Store
- 5.00
- 1 ratings
- Last updated
- September 30, 2026
It doesn't have enough ratings yet to judge what users think.
Rankings
App Store top chartsApp Store Rankings for Crimson: Cycle & Fertility
Competitors
Similar apps and more from Ryan MartinAlternatives to Crimson: Cycle & Fertility
Releases
Updates seen on the App Store- Version
- 1.0.20
- Launched
- July 2026
No changelog data
User feedback
Ratings and reviews on the App StoreComments on Crimson: Cycle & Fertility for iOS
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 43.8 MB
- Content rating
- Medium
Technologies used by Crimson: Cycle & Fertility
About the app and developer
About Crimson: Cycle & Fertility
Crimson: Cycle & Fertility is a health & fitness app developed by Ryan Martin.
User Ratings
Crimson: Cycle & Fertility is rated 5.00 out of 5 stars. The rating is based on one rating ratings.
App Information
Crimson: Cycle & Fertility is freely available from the App Store. The app size is 43.84 MB. The latest version available is 1.0.20. The last update was on September 30, 2026.
Technical Requirements
The app has a content rating of Medium Maturity. The app has been available on the App Store since July 2026.
Developer information for Ryan Martin
Address:
Frequently asked questions about Crimson: Cycle & Fertility
Is Crimson: Cycle & Fertility free?
Yes. Crimson: Cycle & Fertility is free on the App Store.
Is Crimson: Cycle & Fertility still available?
Yes. Crimson: Cycle & Fertility is on the App Store, and the last update we saw was on September 30, 2026.
How large is Crimson: Cycle & Fertility?
Crimson: Cycle & Fertility is 43.84 MB.
Is Crimson: Cycle & Fertility suitable for children?
App Store gives Crimson: Cycle & Fertility a medium maturity rating, so it is not meant for young children.
How do people rate Crimson: Cycle & Fertility?
Crimson: Cycle & Fertility has one rating of 5.00 stars on the App Store.
Who made Crimson: Cycle & Fertility?
Crimson: Cycle & Fertility was developed by Ryan Martin. It is listed in the health & fitness category on the App Store.
What are the best alternatives to Crimson: Cycle & Fertility?
People looking at Crimson: Cycle & Fertility also look at these health & fitness apps: MenoLog, Emberly Private Period Tracker, Rue: Period & Cycle Tracker, Cyra - AI Period Tracker, Cara — Private Period Tracker.
Store listing
By Ryan Martin, from the App Store
Description by Ryan Martin Written by the developer, not by AppBrain. Click to read.
CYCLE TRACKING
- Log periods, flow, symptoms, moods, sleep, and more in a few taps
- Predictions that learn from your history: next period, fertile window, ovulation
- Calendar with color-coded phases and a daily brief written for your cycle day
- Streaks and gentle reminders that keep the habit going
TRYING TO CONCEIVE
- Fertile window and ovulation estimates from your cycles, temperature, and symptoms
- Ovulation alerts so the best days never slip by
- Cycle calculators for planning
PREGNANCY
- Week-by-week timeline with baby size and what to expect
- Kick counter and contraction timer
- Weight tracker with expected-gain ranges by trimester
- Appointments with reminders, plus notes on how your body is changing
PERIMENOPAUSE
- Hot flash tracker: severity, duration, and triggers, with quick logging
- Hormone log for FSH, estradiol, and other results, with trends over time
- Patterns and insights that connect symptoms to your cycle as it shifts
AI ASSISTANT
- Ask anything about what you're seeing; it knows your phase, recent symptoms, and mode
- Personalized daily brief and symptom pattern insights
- Educational guidance, not medical advice; your questions are never sold or shared
PRIVACY FIRST
- Works offline; cloud sync is encrypted in transit and at rest
- Face ID sign-in and App Lock keep the app private on a shared phone
- Import period history from Apple Health; log from your wrist with notification actions
- Export your data anytime as PDF reports or CSV
- We never sell your data. You can delete your account and everything in it from Settings.
FREE, WITH PRO WHEN YOU WANT MORE
Tracking, the calendar, predictions, and every mode are free forever. Crimson Pro adds 100 AI messages a day, pattern analysis, and PDF reports, with a 14-day trial to start.
Available in English, Spanish, French, German, and Portuguese.
Privacy Policy: https://getcrimson.app/privacy
Terms of Use: https://getcrimson.app/terms