Period trackers compared
Isla next to the trackers people most often move from, on the points that differ most.
| Isla | Flo | Clue | Stardust | Apple Health | |
|---|---|---|---|---|---|
| Sign-up before use | none | optional (Anonymous Mode limits export) | account required | not found | none |
| Data used to track you, per the App Store label | none | purchases, location, identifiers, usage data | identifiers | purchases, identifiers, usage data | built into iOS, no label |
| Ads or upgrade pop-ups | none | upgrade pop-ups | upgrade pop-ups | third-party advertising listed | none |
| Notes on any day | free | not found | free | not found | no |
| Home and Lock Screen cycle widgets | free | not found | free | not found | no |
| Perimenopause mode | Pro | free | Pro | not found | no |
| Import from Flo or Clue | Pro | no | no | not found | no |
| Copy of your data from inside the app | JSON or CSV, free | by asking support | JSON zip by email | not found | all-data XML archive |
| Cycle report PDF for a doctor | Pro, any dates | Premium, last six cycles | separate purchase | not found | not verified |
| Price | $9.99 once, $5.99 a year or $1.49 a month | up to $59.99 a year | $29.99 to $39.99 a year | $6.99 a month, $24.99 to $39.99 a year | free |
Isla is free for logging, estimates, reminders, widgets and Apple Health sync. Isla Pro is $9.99 once, $5.99 a year or $1.49 a month in the US.
Get Isla on the App Store