Masik · Tracking your cycle
Your cycle is so much more than your period.
It shapes your mood, your energy, your skin, your sleep. Masik tracks all of it, and shows you the connection — free, with nothing held back behind an upgrade prompt.
September 2026
Predicted next period
Sep 28
Fertile window
Sep 12 – Sep 16
Tell Masik about your cycle and how you're feeling as you go. The prediction engine uses that — and only that — to estimate where you are in your cycle and what's likely next.
Rule-based
No AI black box — predictions come from a documented, readable calculation
$0
What tracking your cycle costs, forever — there is no premium tier to upgrade to
Get predictions you can actually inspect
Know when your period's likely to arrive this cycle and the next — from a calculation you could read yourself, not a locked feature.
Log more than just flow
70+ symptoms, moods, and activities to log — cramps, mood swings, sleep, sex, and more — so patterns actually show up over time, not just "had a period."
Read content reviewed for accuracy
A growing library of articles across cycle basics, fertility, PCOS, endometriosis, perimenopause, and more — written to be genuinely useful, not filler.
Switch modes as your life changes
Trying to conceive, pregnant, or in perimenopause — switch your tracking mode anytime from Settings. The calendar and predictions adapt, nothing resets.
Your body, your data
Export a doctor's report or your complete raw history anytime. Turn on Anonymous Mode to hide your name and email throughout the app. Delete your account and everything in it, instantly, whenever you want.
September 2026
Predicted next period
Sep 28
Fertile window
Sep 12 – Sep 16
Understand what's normal for you
No two cycles are the same. Predictions come from a rolling average of your own logged cycles, with outlier cycles filtered out rather than skewing the average — and a monthly report waiting for you each month summarizing what changed.
Check your symptoms
PCOS and endometriosis affect roughly 1 in 10 people who menstruate, and diagnosis can take years. Masik's Symptom Checker walks through the common signs of each — not a diagnosis, but a clearer starting point for a doctor visit.
Post to the community, your way
Share and read posts organized by category, with likes, comments, and polls. Choose to post under your real name or anonymously with a generated username and avatar — your choice, every time.
Read about sex, honestly
Sexual health is its own article category, not an afterthought — desire changes, pain, contraception, and the rest, covered the same way everything else here is: directly, with a doctor-visit nudge when it matters.
Frequently asked questions
Is Masik free?+
Yes — completely. There is no premium tier, no subscription, and no in-app purchase anywhere in the app. Every feature on this page is available the moment you create an account.
Does Masik show ads?+
Yes — ads are what pay for the app being free, instead of a premium tier or selling your data. They don't gate any feature; everything on this page works the same whether or not you interact with an ad.
What do I get with Masik Premium?+
There's no such thing. This isn't a limited free trial or a stripped-down tier — it's the whole app.
How are my predictions calculated?+
A rolling average of your own logged cycle lengths, with implausible outlier cycles filtered out and your self-reported average blended in when you don't have much history yet — the exact method is documented in the app's own code, not a black box.
Can I get my data out?+
Anytime, from Settings → Export my data — either a readable doctor's report or the complete raw record, no upsell in the way.
Can I use Masik without giving my real name?+
Turn on Anonymous Mode in Settings to hide your name and email throughout the app in favor of a generated identity, protected behind your App Lock PIN.
Know your body. Own your data.
No paywalls, no data sales — just ads to keep it free, and a tracker you never have to think twice about trusting with your data.
Start tracking free