Marigold
Marigold is a private, offline period & cycle tracker for Android with clear predictions and a beautifully labeled cycle ring. No account, no cloud.
A period tracker that keeps your cycle to yourself.
- Free
- No account
- Works offline
- No ads
Marigold tracks your period, predicts what's ahead and shows your whole cycle on a single, clearly labeled ring — period, fertile window, ovulation and expected dates, all readable at a glance.
Cycle data is deeply personal, so Marigold is built to keep it that way: everything stays on your device, there's no account to create, and the app never talks to a server. Your cycle is nobody's business but yours.
At a glance
- Platform
- Android
- Category
- Health & Fitness
- Price
- Free
- Works offline
- Yes, fully
- Ads / trackers
- None
- Languages
- English
Screenshots
Features
Everything Marigold does
Focused features, no filler — each one designed to work without a network connection.
Labeled cycle ring
One glanceable ring shows your period, fertile window, ovulation day and predictions — clearly labeled, never cryptic.
Smart predictions
Period and ovulation forecasts that adapt to your own history, not a textbook average.
Symptom & mood logging
Track flow, symptoms, moods and notes in seconds, and see patterns across cycles.
Cycle history & stats
Average cycle and period length, variation over time and a full calendar of past cycles.
Private by architecture
No account, no cloud sync by default, no analytics. Data lives only on your device.
Gentle, calm design
A warm, uncluttered interface designed to be reassuring rather than clinical.
Roadmap
Where it's headed
An honest look at what's shipped, what's being built and what's on the horizon. Plans can shift — quality comes first.
- Shipped
Cycle ring, logging & predictions
The full core tracker with the labeled ring and adaptive forecasts.
- In progress
App lock
Optional PIN/biometric lock for an extra layer of on-device privacy.
- Planned
Encrypted backup you control
Optional end-to-end-encrypted backup so only you can ever read it.
- Planned
More languages
Localisation beyond English, prioritised by user requests.
FAQ
Marigold: your questions answered
Can't find your answer? Reach out via the contact page — real replies, typically within 1–2 business days.
Learn more
Guides & tools for Marigold
Free, practical help — and in-browser tools that run entirely on your device.
The Four Phases of Your Menstrual Cycle, Properly Explained
The menstrual cycle is far more than a monthly timer. Understanding its four distinct phases — and why the textbook 28-day model misleads most people — is the foundation of real cycle literacy.
What Is a "Normal" Cycle? (Wider Than You Think)
Most cycles that people worry about fall comfortably within the normal clinical range. Here is what that range actually is — and the small set of patterns that genuinely warrant medical attention.
Ovulation and the Fertile Window: The Real Math
The fertile window is six days long, sperm survive up to five of them, and ovulation rarely happens on day 14. Here is the biology — and a frank note on what tracking apps can and cannot do.
PMS, PMDD and the Luteal Phase: What's Actually Happening
Feeling worse in the two weeks before your period is not in your head — there is a clear hormonal mechanism. Here is what it is, what helps, and when PMS becomes something clinically different.
Your Cycle Data Is Medical Data: Privacy 101
Cycle data can reveal pregnancy, fertility, health conditions, and reproductive intentions. Here is why it deserves the same care as your most sensitive medical records — and what to look for in an app.
Tracking Your Cycle for Insight: Making Your Data Useful
Tracking your cycle becomes genuinely useful only when you know what to log, why each field matters, and how to read three cycles of data rather than just accumulate it.
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Privacy, in writing
Exactly what Marigold stores, where it lives, and what does — and never does — leave your device, in plain language, short enough to actually read.
Read the policyNeed a hand?
Found a bug, want a feature, or just have a question about Marigold? Support comes straight from the developer.
Get support