Period tracking that stays on your phone.
Track your cycle, symptoms, and mood — encrypted on your device or synced across all your devices. Either way, we can't read it and we don't know who you are.
You track anything. Nothing tracks you.
Free forever. No account required.
Cycle tracking as simple as writing in a diary
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Log your cycle
Record flow, symptoms, mood, and notes. Just tap and type — no complicated forms.
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See your patterns
Quanitya surfaces trends in cycle length, symptoms, and mood over time.
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Stay informed, stay private
All your data lives on your device — or encrypted across devices. Nobody else sees it.
Everything you need to understand your cycle
Simple period tracking with useful insights — without giving up your privacy.
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Cycle length tracking
Monitor your cycle patterns over time and spot changes early.
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Symptom logging
Track cramps, bloating, headaches, and any custom symptom you care about.
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Mood tracking
Log how you feel and see how it connects to your cycle phases.
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Flow intensity
Record daily flow levels so you can plan ahead.
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Medication log
Track pain relief, supplements, or contraceptives and see what helps.
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Trend charts
Visualize your data with five chart types that make patterns obvious.
Charts and trends
Multiple chart types
Custom analysis
Built for any kind of tracking
Design your own templates or let AI do it for you.
AI template generation
Custom template designer
Why people switch to Quanitya
Encrypted and on your device
Your data is encrypted and stored locally. The server can't read it — even if someone broke in, they'd get nothing usable.
No account, no email, no password
Sign up anonymously. No personal information collected. We don't know who you are and we like it that way.
Track it your way
Build custom templates with the fields you actually need — or describe what you want and let AI create it for you.
Works offline, syncs when you want
Everything works without internet. Want your data on all your devices? Optional encrypted sync keeps everything in sync — still end-to-end encrypted.
Free forever
All tracking, templates, charts, and local analysis are free with no ads. Cloud sync and advanced AI analysis are optional upgrades.
Source code you can verify
Our code is publicly available. Don't take our word for the encryption — check it yourself.
We can't see your data — even if we wanted to
Your entries are encrypted on your device. If you turn on sync, data is encrypted before it leaves your phone — the server only stores blobs it can't decrypt. We don't collect names, emails, or any personal identifier. We don't even know who you are — just an anonymous public key. If we got hacked tomorrow, attackers would find encrypted noise and anonymous keys. Nothing useful.
Frequently Asked Questions
- Quanitya stores all your data locally on your device with encryption. There's no account, no cloud requirement, and no way for anyone — including us — to access your data. Flo and Clue store data on their servers.
- Yes. You can log flow, cramps, mood, energy, medications, and any custom field you want. Quanitya's template system lets you track exactly what matters to you.
- Quanitya tracks your cycle length over time and helps you see patterns. You can also use the built-in analysis tools or ask the AI to surface insights from your data.
- Yes. All tracking, templates, charts, and local analysis are completely free — no ads, no paywalls, no hidden costs. Optional paid features include cloud sync and advanced statistical reports. Even the paid analysis is privacy-preserving — your data is stripped of all labels and sent as anonymous numbers. The server does the math and sends results back, with nothing stored.
- No. Quanitya uses anonymous authentication. You get a recovery key when you start — no email, no password, no personal info required.
- Yes. Your data is encrypted on your device and never sent anywhere unencrypted. We use anonymous authentication — no email, no name, no phone number. The server stores only encrypted data it cannot read.
- Yes. Quanitya works fully offline. All your data is stored locally. Cloud sync is optional and encrypted end-to-end if you choose to use it.
- Yes. Encrypted cloud sync is available as an optional subscription. Your data is encrypted end-to-end before it leaves your device — the server never sees it in plaintext.
- Yes. You can export all your data as JSON at any time. Your data belongs to you.
How is Quanitya different from Flo or Clue?
Can I track symptoms and mood alongside my period?
Does Quanitya predict my next period?
Is Quanitya really free?
Do I need to create an account?
Is my data really private?
Does it work offline?
Can I sync across devices?
Can I export my data?
Start tracking your cycle — privately
Free. Encrypted. No account required. Your cycle data stays yours.
Get Started