What are the best period trackers that say they do not sell your data?
HerFound lists 8 period trackers that say they do not sell your data: Clue, Euki, Femometer, Mira, Premom, Read Your Body, Stardust and drip. 5 of 8 have a free version (Clue, Euki, Mira, Premom and Stardust). Euki, Read Your Body and drip keep data on your device or offer a mode that does. Each fact below comes from the app's own pages, last checked Nov 12, 2026.
Updated . How an app gets on this list: Period trackers whose own policy or official pages say personal data is not sold. Where a company adds a caveat, the listing shows it. We don't rank by rating or popularity and we don't publish ratings; sponsored listings are labelled.
Period Trackers That Say They Do Not Sell Your Data compared
- Clue
- Free version
- Yes
- Paid plan
- $9.99/month or $39.99/year
- Sells your data?
- No
- Data used for ads?
- Yes
- Account
- Required
- Data kept
- Company servers
- Platforms
- iOS, Android
- Euki
- Free version
- Yes
- Paid plan
- —
- Sells your data?
- No
- Data used for ads?
- No
- Account
- Not needed
- Data kept
- On your device
- Platforms
- iOS, Android
- Femometer
- Free version
- —
- Paid plan
- $9.99/month, $19.99/quarter or $49.99/year
- Sells your data?
- No
- Data used for ads?
- Yes
- Account
- —
- Data kept
- —
- Platforms
- iOS, Android
- Mira
- Free version
- Yes
- Paid plan
- —
- Sells your data?
- No
- Data used for ads?
- Yes
- Account
- —
- Data kept
- Company servers
- Platforms
- iOS, Android
- Premom
- Free version
- Yes
- Paid plan
- $12.99 to $37.99
- Sells your data?
- No
- Data used for ads?
- —
- Account
- —
- Data kept
- Company servers
- Platforms
- iOS, Android
- Read Your Body
- Free version
- Trial only
- Paid plan
- $2.69/month or $20.99/year
- Sells your data?
- No
- Data used for ads?
- —
- Account
- Optional
- Data kept
- Device option
- Platforms
- iOS, Android
- Stardust
- Free version
- Yes
- Paid plan
- $6.99/month, or $24.99 to $39.99/year
- Sells your data?
- No
- Data used for ads?
- Yes
- Account
- —
- Data kept
- Company servers
- Platforms
- iOS, Android
- drip
- Free version
- —
- Paid plan
- —
- Sells your data?
- No
- Data used for ads?
- No
- Account
- —
- Data kept
- On your device
- Platforms
- iOS, Android
| App | Free version | Paid plan | Sells your data? | Data used for ads? | Account | Data kept | Platforms |
|---|---|---|---|---|---|---|---|
| Clue | Yes | $9.99/month or $39.99/year | No | Yes | Required | Company servers | iOS, Android |
| Euki | Yes | — | No | No | Not needed | On your device | iOS, Android |
| Femometer | — | $9.99/month, $19.99/quarter or $49.99/year | No | Yes | — | — | iOS, Android |
| Mira | Yes | — | No | Yes | — | Company servers | iOS, Android |
| Premom | Yes | $12.99 to $37.99 | No | — | — | Company servers | iOS, Android |
| Read Your Body | Trial only | $2.69/month or $20.99/year | No | — | Optional | Device option | iOS, Android |
| Stardust | Yes | $6.99/month, or $24.99 to $39.99/year | No | Yes | — | Company servers | iOS, Android |
| drip | — | — | No | No | — | On your device | iOS, Android |
Sources: each app's own privacy policy, help pages and US App Store listing. Open an app to read the exact passage and the date we checked it. “—” means we have not sourced that fact yet. This is what each company states, not an audit of what it does.
All 8 apps
Clue
A period tracker: cycle tracking with predictions for your period, PMS and ovulation.
Euki
A period tracker: log your cycle and sexual health, with your entries kept on your phone.
Femometer
A fertility and period tracker: BBT charts, LH test reading and device syncing
Mira
A fertility tracker: reads your hormones with the Mira monitor to find your fertile window and confirm ovulation.
Premom
An ovulation and fertility tracker: reads your ovulation test strips and charts your cycle
Read Your Body
A cycle charting app: customisable period tracking and fertility awareness charting.
Stardust
A privacy-first period tracker: cycle predictions, moon phases and sharing with friends or a partner.
drip
An open-source period tracker: log your cycle and practise fertility awareness, with data kept on your phone.
Common questions
Clue, Euki, Mira, Premom and Stardust have a free version. Read Your Body needs a paid plan beyond any free trial.
Euki and Read Your Body can be used without creating an account, according to their own pages.
All 8 are on Android: Clue, Euki, Femometer, Mira, Premom, Read Your Body, Stardust and drip.
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