Wren: PCOS Cycle & Symptoms
PCOS & Irregular Cycle Tracker
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Most trackers guess a date and hope. Wren gives you an honest forecast range based on your own cycle history - built for cycles that don't run on 28 days.
Most period trackers assume a 28-day rhythm and hand you one confident date. If your cycles run 34 days, then 61, then 40, that answer was wrong before you read it.
Wren is built for cycles that don't follow the rules.
AN HONEST FORECAST
Instead of inventing a date it can't stand behind, Wren shows a range - "likely Aug 20 to Sep 16" - and tells you how confident it is, based on your own history. When there isn't enough data yet, it says so.
SEE YOUR CYCLES AS THEY ACTUALLY ARE
Your real cycle lengths, drawn to scale. The irregularity you've been trying to describe to a doctor, visible in one glance.
THE SYMPTOMS THAT ACTUALLY COME WITH THIS
Not generic cramps and mood. Jawline acne, scalp shedding, unwanted hair, carb cravings, fatigue crashes, bloating, low mood, poor sleep - logged in seconds, on a simple scale.
YOUR LABS, IN ONE PLACE
Testosterone, AMH, fasting insulin, HbA1c, vitamin D and more - recorded over time and plotted against typical ranges for context. Wren never interprets your results; it just makes sure you have them.
A SUMMARY YOU CAN ACTUALLY HAND OVER
Turn months of tracking into a clear, shareable summary for your next appointment. Cycle lengths, symptom frequency, lab history - the things you always mean to mention and never remember.
FIND YOUR PATTERNS
Wren compares your recent weeks against the ones before, and your bleeding days against the rest of the month, to surface what's actually shifting.
PRIVATE BY DESIGN
Your health log is stored only on this device. There's no account to create, and nothing you log is ever uploaded. We can't see your data - not because we promise not to look, but because it never reaches us.
WREN PREMIUM
Unlocks your forecast range, full cycle history, the lab log and appointment summary, pattern-finding, and supplement tracking. Monthly or yearly.
Wren is a tracking and education tool. It does not diagnose, interpret results, or recommend treatment, and it is not a contraceptive. Always talk to your clinician.
SUBSCRIPTION DETAILS
Wren Premium is an auto-renewing subscription, offered monthly or yearly. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. You can manage or cancel your subscription in your Apple Account settings. Prices are shown in the app in your local currency.
Terms of Use (EULA): https://jmarrr.github.io/legal/wren-terms.html
Apple standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://jmarrr.github.io/legal/wren-privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Degen Technology Corp., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Degen Technology Corp.
- Size
- 36.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Advertising
- In-App Purchases
Yes
- Wren Premium Yearly $59.99
- Wren Premium Monthly $9.99
- Copyright
- © 2026 Degen Technology