How a free period tracker app pays its bills
Most free apps are paid for by ads, by your data, or by a trial that turns into a charge. Her Good Days uses none of the three. Here is what pays for it instead.
Her Good Days is free because an optional shop of physical wellness products pays for it. Every feature works whether you buy anything or not.
The shop is a separate service with no access to your health logs, it never appears because of a symptom you logged, and it is switched off completely in teen mode.
The three usual ways free apps make money
| Model | What you give up | In Her Good Days |
|---|---|---|
| Ads | Attention, and often data shared with ad networks | No third-party ads, and no advertising or analytics code from other companies |
| Selling or sharing data | Control over what you logged | Your data is never sold or rented |
| Freemium or trials | The features you need, or a card on file | Every feature free, no card asked for |
Each of those works for a lot of apps. For an app that holds period dates, pregnancy weeks and symptoms, we didn't want any of them.
What pays for it
The app has a small shop that lists physical wellness products. It sits in one quiet row at the end of the Today screen, the same row for everyone, and in its own place in the app.
An optional shop of supplements and other wellness products. It never sees your health logs, and nothing you log decides what it shows you.
The rules that keep the shop in its lane
- No access to health data. The shop is a separate service. It cannot read symptoms, cycle days, weight, medication or notes.
- No symptom-triggered offers. Logging a hot flash or a bad night never makes a product appear.
- Outside personalization. The rules that pick your Today cards and Log items cannot name a product or the shop. Our validator rejects any rule that tries.
- Nothing for under-18s. Teen mode has no shop, no shop notifications and no marketing consent.
- Shop notifications only if you opt in. They are off unless you turn them on.
What "free" covers
All of it: symptom, cycle, sleep, mood, food, water and habit tracking, the weekly summary, the PDF report for your doctor, reminders, and the workout programs. Nothing on that list will move behind a paywall later, because there is no paid tier to move it to.
Want to know what happens to the data itself? Read what we do and don't do with your data.
Questions
Is Her Good Days really free?
Yes. Every feature is free: tracking, the weekly report, the PDF for your doctor and the workout programs. There is no trial, no premium tier and nothing to cancel.
How does the app make money?
From an optional shop of physical wellness products inside the app. If you never open it, you still get every feature.
Does the shop see what I log?
No. The shop runs as a separate service that cannot read symptoms, weight, medication or any other health log. It only knows which products you opened.
Is the shop shown to teenagers?
No. Teen mode, for ages 13 to 17, has no shop at all.
Start with today
Her Good Days is free, with no third-party ads and nothing to subscribe to. Free on iPhone and Android.