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Cystra
PCOS Symptom Tracker
Track PCOS symptoms, cycles, and labs in seconds, without scores or goals
Cystra is an iPhone app made by Develak, a private symptom and cycle journal for people with PCOS, built to log fatigue, acne, hair changes, mood, and lab results without weight-loss or fertility framing.
- Age
- 4+ years old
- Category
- Health & Fitness
- Price
- Free In-app purchases
- Languages
- 44 EN · FR +42
- Requires
- iOS 17+ iPhone · iPad
- Size
- 5.9 MB
- Version
- 1.0
Screenshots
See Cystra in action
iPhone
iPad
Overview
What is Cystra?
Cystra is a journal built around living with PCOS, not around weight loss or fertility predictions. In two taps you can record fatigue, acne, hair growth, hair shedding, pain, and mood, with no scores to win and no body goals to chase.
Cycle dates are logged as they actually happen, without forcing a "normal" interval or assuming every cycle is predictable. A lab notebook keeps testosterone, AMH, fasting insulin, HOMA-IR, LH, and FSH results with your own laboratory’s units and reference ranges, alongside prescriptions and supplements recorded exactly as agreed with your clinician. With "Cystra Pro", you can explore lab trends, prepare appointment questions, and create a doctor-ready PDF.
Read the full App Store description
Cystra is a compassionate journal for living with PCOS — built around your condition, not weight loss or fertility predictions.
Log in two taps
Record fatigue, acne, hair growth, hair shedding, pain and mood in seconds. There are no scores to win and no body goals to chase.
Irregular cycles, native by design
Log cycle dates without forcing a “normal” interval or pretending every cycle is predictable.
Laboratory notebook
Keep testosterone, AMH, fasting insulin, HOMA-IR, LH and FSH results with international units and the reference range printed by your own laboratory.
Treatments and reminders
Record prescriptions and supplements exactly as agreed with your clinician, with optional reminders.
Cystra Pro
Explore lab trends and careful observations across symptoms, treatments and cycles. Prepare appointment questions, create a concise doctor PDF, export CSV and sync your journal through your private iCloud database.
Your data, your choice
The journal is local by default. Cystra contains no advertising and does not sell health information. Delete your journal from the device and iCloud in one step.
Cystra records and summarizes self-reported information. It does not diagnose, treat or replace professional medical advice.
Subscriptions and purchases
Cystra Pro is available as monthly or annual auto-renewable subscriptions, or as a one-time lifetime purchase. Only the annual plan may include a 7-day free trial for eligible new subscribers. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings. Prices are shown in the app and may vary by country.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://develak.com/privacy-policy/
Contact support: https://develak.com/#contact
Highlights
What can you do with Cystra?
Log symptoms, cycles, and lab results, track treatments, and export doctor-ready reports with Cystra Pro.
Log symptoms in seconds
Record fatigue, acne, hair growth, hair shedding, pain, and mood in just two taps.
Cycle tracking without a fixed rhythm
Log cycle dates without forcing a "normal" interval or assuming every cycle is predictable.
A lab results notebook
Keep testosterone, AMH, fasting insulin, HOMA-IR, LH, and FSH results with your own lab’s units and reference ranges.
Treatments and reminders
Record prescriptions and supplements exactly as agreed with your clinician, with optional reminders.
Lab trends and doctor PDFs
"Cystra Pro" surfaces trends across symptoms, treatments, and cycles, and builds a concise PDF for appointments.
Local-first privacy
Your journal stays on your device by default, with no advertising and no sale of health information.
Who it’s for
Who is Cystra for?
-
People newly diagnosed with PCOS
A starting point to log symptoms and cycles without weight-loss framing or fertility predictions.
-
People with irregular cycles
Cycle dates are logged as they occur, without a forced "normal" interval.
-
People monitoring hormone and lab results
A place to keep testosterone, AMH, insulin, and other lab values with their own reference ranges over time.
-
People managing prescriptions and supplements
Record treatments as agreed with a clinician and set optional reminders.
-
People preparing for doctor appointments
With "Cystra Pro", prepare questions and generate a concise PDF summary to bring to a visit.
How it works
How does Cystra work?
From “Log a symptom” to “Review trends with "Cystra Pro"”, in 5 steps.
Log a symptom
Open the journal and record fatigue, acne, hair growth, hair shedding, pain, or mood in two taps.
Add a cycle date
Log the start of a cycle whenever it happens, without assuming a fixed interval.
Enter lab results
Add testosterone, AMH, fasting insulin, HOMA-IR, LH, or FSH values with the units and reference range from your own lab report.
Track treatments
Record prescriptions and supplements as agreed with your clinician, and set optional reminders.
Review trends with "Cystra Pro"
Explore lab trends, prepare appointment questions, and export a doctor PDF or CSV file.
In depth
Cystra, in detail
How does Cystra track irregular PCOS cycles?
Cystra lets you log the start of a cycle whenever it occurs, without forcing a "normal" interval or predicting when the next one will begin. This is meant to reflect how PCOS cycles actually behave rather than fit them into a fixed calendar pattern.
Because there are no scores or body goals attached to cycle logging, the journal simply records what happened so you have a clear history to look back on or share with a clinician.
What can you record in Cystra’s lab notebook?
The lab notebook keeps testosterone, AMH, fasting insulin, HOMA-IR, LH, and FSH results. Each entry can include international units and the reference range printed by your own laboratory, so values stay comparable to how your lab reported them.
Treatments are recorded alongside lab data: prescriptions and supplements are logged exactly as agreed with your clinician, with optional reminders so nothing gets missed.
What does "Cystra Pro" add for appointments and lab trends?
"Cystra Pro" lets you explore trends across symptoms, treatments, and cycles over time, alongside your lab results. It also helps you prepare questions for an upcoming appointment.
From there, you can create a concise doctor PDF, export a CSV file, and sync your journal through your private iCloud database.
Release notes
What’s new in Cystra
Version
1.0
The release notes of this version are available on the App Store.
FAQ
Cystra: your questions, answered
Something else? The Cystra support page covers purchases, sync and settings, and lets you write to us directly.
Is Cystra free?
Yes. Cystra is free to download from the App Store. Optional in-app purchases unlock extra features; they are billed by Apple to your Apple Account, and you can manage them at any time in your account settings.
Which devices does Cystra work on?
Cystra works on iPhone and iPad with iOS 17.0 or later.
What symptoms can I log in Cystra?
Cystra lets you record fatigue, acne, hair growth, hair shedding, pain, and mood in a few taps, with no scores or body goals attached to any entry.
Does Cystra track cycle length or predict fertility?
No. Cystra logs cycle dates as they happen without forcing a "normal" interval, and it is not built around fertility predictions.
How do I add lab results in Cystra?
You can enter testosterone, AMH, fasting insulin, HOMA-IR, LH, and FSH results, using the international units and reference range printed on your own lab report.
Can I record treatments and set reminders?
Yes. Prescriptions and supplements can be logged exactly as agreed with your clinician, and you can turn on optional reminders for them.
What is included in "Cystra Pro"?
"Cystra Pro" adds lab trend views, appointment question preparation, a concise doctor PDF, CSV export, and iCloud sync of your journal.
How do I export my data from Cystra?
With "Cystra Pro", you can export a doctor-ready PDF summary or a CSV file of your logged symptoms, cycles, and lab results.
What languages is Cystra available in?
Cystra is available in 44 languages: Arabic, Bangla, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Odia, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Urdu and Vietnamese.
How do I get help with Cystra?
Visit the Cystra support page: it answers common questions about purchases, sync and settings, and has a contact form. You can also write to contact@develak.com. We read every message and reply personally.
Made by Develak
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