islaIsla and Flo compared
How Isla and Flo differ on sign-up, what is shared, what is free and what it costs, from each App Store page and help center as read on 2026-10-04.
| Isla | Flo | |
|---|---|---|
| Sign-up before use | none | optional (Anonymous Mode limits export) |
| Data used to track you, per the App Store label | none | purchases, location, identifiers, usage data |
| Ads or upgrade pop-ups | none | upgrade pop-ups |
| Notes on any day | free | not found |
| Home and Lock Screen cycle widgets | free | not found |
| Perimenopause mode | Pro | free |
| Import from Flo or Clue | Pro | no |
| Copy of your data from inside the app | JSON or CSV, free | by asking support |
| Cycle report PDF for a doctor | Pro, any dates | Premium, last six cycles |
| Price | $9.99 once, $5.99 a year or $1.49 a month | up to $59.99 a year |
"Not found" means we did not find it in the App Store listing or help center; it may exist. Prices are US amounts. Corrections: isla@tundra.industries.
What Flo has that Isla 1.0 does not
- A Health Assistant chat and expert articles and video courses, in Premium
- A community (Secret Chats)
- Flo for Partners, a view-only calendar for a partner (not with Anonymous Mode)
- A teen mode
Moving your history
Request your data in Flo through Help, Contact us, and ask for JSON. In Isla (Isla Pro), Settings, Your log, Bring your history, then pick the file. You see the cycles found before anything is saved.
Isla estimates your cycle from what you log. It is not birth control and it is not medical advice.
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