Eva tracks your period, symptoms and predictions entirely on your device. No sign-up, no servers, no one watching. Backups go only to your own iCloud or Drive.
No onboarding forms. No verification email. Just open it.
Download, tap the icon, and you're in. No account to create.
Mark your period start and add symptoms with a couple of taps.
Eva learns your cycle and quietly predicts what's ahead.
Gentle, accurate tracking that works whether or not you have signal.
See your next period, fertile window and PMS days at a glance — calculated locally.
Log mood, flow, cramps and 30+ more with a couple of taps.
Quiet nudges before your period and pill time, all set on-device.
Generate a clean summary of your cycles, symptoms and patterns to bring to an appointment. It's created right on your device — you choose exactly what to share, and nothing is uploaded anywhere.
Start free and stay free. Upgrade only when you want your whole picture.
Eva is made by Skulze LLC. We chose local-first, serverless architecture on purpose: if there's no database, there's nothing to leak, sell or subpoena. Simple as that.
Read our story →Download Eva and track your cycle the private way. Free to start, on iOS and Android.