Her
Cycle science, Oura Ring biometrics, and astrology — woven together into one intelligent, deeply personal health companion.
Get Early AccessComing soon to the App Store
Cycle science, Oura Ring biometrics, and astrology — woven together into one intelligent, deeply personal health companion.
Get Early AccessComing soon to the App Store
Real-time fertile window detection using the coverline 3-over-6 method — the same algorithm behind FDA-cleared fertility apps. With Oura Ring data, ovulation is confirmed, not estimated.
Pulls your nightly temperature deviation, HRV, resting heart rate, sleep score, and readiness — all interpreted through the lens of where you are in your cycle.
Your natal chart mapped against real-time planetary transits. See how today's sky aspects your Sun, Moon, and Rising — and how it intersects with your hormonal phase.
An AI that knows your cycle day, hormone levels, biometrics, and birth chart. Ask her anything — she responds with data, not guesses.
Real-time moon phase with NASA-grade accuracy. See how lunar energy aligns with your cycle, set intentions by the new moon, release by the full.
Gentle, phase-aware nudges sent to your partner. Not what you're feeling — just what they can do. Empathy through biology.
Enter your last period start date. PredictHer calculates your phase, estimates hormones, and starts building your pattern — no wearable required to begin.
Link your Oura Ring for real temperature, HRV, and sleep data. After 9 nights, your fertile window is confirmed by actual basal body temperature — not calendar math.
Enter your birth details. PredictHer calculates your natal chart and overlays today's transits — showing you where cosmic weather meets your biological weather.
PredictHer's fertility algorithm uses the coverline method — 6 consecutive baseline temperatures followed by 3 elevated readings above the coverline + 0.1°C threshold. This is the same approach used by Natural Cycles, the only FDA-cleared contraceptive app. Combined with a 5-day sperm survival window (Wilcox et al., 1995), your fertile window is calculated with clinical precision.
7-day free trial included