What are the best free period tracking apps?
HerFound lists 10 free period tracking apps: Clue, Euki, Flo, Glow, HealCycle, Kindara, Mira, Premom, Proov and Stardust. Euki and Glow keep data on your device or offer a mode that does. Clue, Euki, Mira, Premom and Stardust say outright that they do not sell personal data. Each fact below comes from the app's own pages, last checked Nov 14, 2026.
Updated . How an app gets on this list: Apps with a free version that goes beyond a trial. We don't rank by rating or popularity and we don't publish ratings; sponsored listings are labelled.
Free Period Tracking Apps 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
- Flo
- Free version
- Yes
- Paid plan
- $1.99 to $59.99
- Sells your data?
- Not for money
- Data used for ads?
- Yes
- Account
- Optional
- Data kept
- Anonymous option
- Platforms
- iOS, Android
- Glow
- Free version
- Yes
- Paid plan
- $59.99/year, $29.99 every 3 months or $99.99 lifetime
- Sells your data?
- Not for money
- Data used for ads?
- Yes
- Account
- —
- Data kept
- Device option
- Platforms
- iOS, Android
- HealCycle
- Free version
- Yes
- Paid plan
- —
- Sells your data?
- —
- Data used for ads?
- No
- Account
- —
- Data kept
- Company servers
- Platforms
- iOS, Android
- Kindara
- Free version
- Yes
- Paid plan
- $4.99/month or $49.99/year
- Sells your data?
- May sell
- Data used for ads?
- —
- Account
- —
- Data kept
- Company servers
- Platforms
- iOS, Android, Web
- 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
- Proov
- Free version
- Yes
- Paid plan
- $99.99
- Sells your data?
- —
- Data used for ads?
- Yes
- Account
- —
- Data kept
- Company servers
- 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
| 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 |
| Flo | Yes | $1.99 to $59.99 | Not for money | Yes | Optional | Anonymous option | iOS, Android |
| Glow | Yes | $59.99/year, $29.99 every 3 months or $99.99 lifetime | Not for money | Yes | — | Device option | iOS, Android |
| HealCycle | Yes | — | — | No | — | Company servers | iOS, Android |
| Kindara | Yes | $4.99/month or $49.99/year | May sell | — | — | Company servers | iOS, Android, Web |
| Mira | Yes | — | No | Yes | — | Company servers | iOS, Android |
| Premom | Yes | $12.99 to $37.99 | No | — | — | Company servers | iOS, Android |
| Proov | Yes | $99.99 | — | Yes | — | Company servers | iOS, Android |
| Stardust | Yes | $6.99/month, or $24.99 to $39.99/year | No | Yes | — | Company servers | 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 10 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.
Flo
Editor's pickA period and ovulation tracker: predictions plus personalized health insights.
Glow
A fertility and ovulation tracker: period forecasts, partner sharing and community forums
HealCycle
Editor's pickA PMDD and PMS companion: track your hard days, spot the pattern and get support every phase.
Kindara
A fertility charting app: record basal body temperature, cervical mucus and your other cycle signs.
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
Proov
A hormone test reader app: scan your Proov test strips and see your hormone levels across the cycle.
Stardust
A privacy-first period tracker: cycle predictions, moon phases and sharing with friends or a partner.
Common questions
Clue, Euki, Mira, Premom and Stardust say they do not sell personal data. Flo and Glow say they do not sell it for money; see each listing for what the policy adds about advertising. Kindara says it may sell personal data. This is what each company states in its own policy, not an audit.
Euki and Flo can be used without creating an account, according to their own pages.
All 10 are on Android: Clue, Euki, Flo, Glow, HealCycle, Kindara, Mira, Premom, Proov and Stardust.
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