Vela vs Ovia
Vela stores your cycle data on your iPhone and needs no account. Ovia stores your account and data on its servers in the US, on Amazon Web Services.
| Vela | Ovia | |
|---|---|---|
| Where your logs live | Your iPhone | Ovia's servers (AWS, in the US) |
| Account | Not required | Required |
| End-to-end encrypted sync | Yes. We cannot read it. | No. Encrypted in transit and at rest. |
| Regulatory or research findings | None | Washington Post, 2019: employer versions passed de-identified, aggregated health data to employers. Ovia now asks for your consent first. |
Choose Vela if
- You want your logs to stay on your phone
- You do not want to create an account
- You would rather pay once than subscribe
Choose Ovia if
- Your employer or health plan pays for Ovia
- You need Android today. Vela for Android is coming soon.
Sources: Ovia Health Privacy Policy , Ovia: Can I transfer my data to a new phone? , Washington Post, April 2019 . Checked October 2026.