Polly tracks your cycles, symptoms, labs, and medications — built for the irregular reality of PCOS. Everything stays on your iPhone. No account. No cloud.
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Your actual cycle length history
The most popular PCOS apps have collected hundreds of complaints on Reddit and in App Store reviews about unexpected charges, data shared with third parties, and subscription cancellations that don't actually cancel.
"I cancelled 8 months ago and was still being charged. They had my health data and my credit card and apparently didn't need my permission for either."
— r/PCOS, 847 upvotesPolly was built as a direct response to these complaints. Local-first, subscription-honest, and technically verifiable: if there's no server, there's nothing to breach.
Built around the six areas that actually matter for PCOS management — not the six areas that look good in a screenshot.
Designed for irregular cycles. Log period start and end, track cycle length over time, and see patterns without 28-day assumptions baked in.
Acne, fatigue, brain fog, bloating, mood, cramps, hirsutism — and custom symptoms you define. Rate severity. See trends over months.
Track testosterone, LH, FSH, DHEA, AMH, insulin, HbA1c, and more. Reference ranges shown. Trend lines across visits. Know when something's improving.
Metformin, spironolactone, birth control, supplements. Check off doses daily. See your adherence streak. Never wonder if you took it.
A PDF summary of your symptoms, labs, and cycle history — organized the way a doctor wants to read it. Walk in prepared. Make the 15 minutes count.
Charts of your cycle lengths over time, top symptoms by frequency, energy trends across 90 days. Your data telling you something useful.
Most PCOS management is about long-term trends — not single appointments. Polly stores every lab result so you can see whether testosterone is trending down, whether HbA1c is improving, whether LH:FSH is moving toward the right ratio.
Testosterone trend (6 months)
Reference ranges shown for each lab type. Tap any data point to see the full result from that date.
Health data is among the most sensitive information a person generates. Polly was built from the ground up so that nothing you enter ever leaves your phone.
All data is stored in Apple's SwiftData framework on your iPhone. Nothing is transmitted to any server — because there is no server.
Polly never asks for your email, name, or any identifying information. You open the app and start tracking. That's it.
When you delete Polly, your data is gone. There's no backup copy in a database somewhere. There's no "30-day hold" period. It's your phone.
The technical proof: Polly has no network entitlements and no API calls to external servers. You can verify this yourself with a packet sniffer — Polly makes zero outbound network requests with your health data. The App Store receipt check for subscriptions goes to Apple directly, not to us.
Polly is free to download and use. Polly+ unlocks unlimited history, labs, export, and medications. Cancel through Apple at any time — your data stays on your phone.
30 days of history. Always free.
Less than a third the price of other PCOS apps.
7-day free trial. Save 42% vs monthly.
Subscriptions managed by Apple. Cancel in Settings → Apple ID → Subscriptions. Your data remains on your phone regardless.