Common questions

Download the app from the App Store, create a free account, and complete the onboarding questionnaire. The questionnaire takes about two minutes and covers your training history, current schedule, and any active injuries. Your first session is ready immediately after.

No. Sundee Fundee is completely free. The app is supported by voluntary donations from athletes who find it valuable. If you want to help keep development going, you can make a donation here.

Sundee Fundee is currently available for iPhone running iOS 16 or later. An Apple Watch companion app and Android version are on the roadmap.

Yes. If you do not have a wearable, the readiness score uses your subjective check-in responses along with any Apple Health data your phone passively captures (steps, sleep from bedtime detection). The score is less precise without HRV data, but it still adapts your programming meaningfully.

Yes. Sundee Fundee reads HRV, resting heart rate, sleep stages, and active energy directly from Apple Health. You control which data categories are shared via the standard Health permissions prompt — the app only reads what you grant access to.

Garmin Connect integration is currently in active development. Once live, the app will be able to pull HRV and recovery metrics directly from Garmin wearables. For now, Garmin users can sync data to Apple Health via the Garmin Connect app and the app will read it from there.

Full CSV data export is on the roadmap. It is not available in the current version. If data portability is important to you, send us a note — user interest is a direct input into what we prioritize.

Training logs and readiness data are synced to a secure cloud backend to support cross-device access and backup. Health data (HRV, sleep, heart rate) is read from Apple Health on your device and processed locally — it is not sent to our servers. See the Privacy Policy for full details.

No. Cycle tracking is entirely optional. Athletes who prefer not to use it train on the readiness-only model, which adapts intensity and volume to your recovery state without any cycle data. Cycle-phase adaptation is an additive layer for those who want it.

Cycle data is stored encrypted on your device and in your iCloud account. It is not shared with Sundee Fundee servers. The app reads cycle phase information locally and uses it to adjust programming calculations on-device.

The app accommodates irregular cycles. You can log cycle start dates manually, and the model applies phase adaptations based on your tracked history rather than assuming a fixed 28-day cycle. If cycle length varies significantly, the readiness score carries more weight than phase-based adjustments.

Absolutely. The cycle-phase layer simply remains inactive. All other features — readiness scoring, injury routing, and progressive overload logic — apply equally regardless of whether cycle tracking is used.