Ovulation prediction, made gentle

Whether you’re trying to conceive or avoiding pregnancy, add your period and scan any test brand — Pretty Kitty AI helps you understand your fertile window clearly and privately.

Your monthly calendar (example)

December 2025

🌿 Fertile ⭐️ Highly fertile 🩸 Period (estimated)

Mon	Tue	Wed	Thu	Fri	Sat	Sun
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21 🌿
22 🌿	23 🌿	24 🌿⭐️	25 🌿⭐️	26 🌿⭐️	27	28
29	30	31	1	2	3	4 🩸

Example fertile window: Sunday, 21 December 2025 to Friday, 26 December 2025. Estimated period: Sunday, 04 January 2026 to Friday, 09 January 2026. Predictions improve as you log more.

Legend: 🌿 Fertile days ⭐️ Highly fertile (best timing) 🩸 Estimated period

Prediction confidence

Honest estimate today (65%). This will rise as you add periods, LH peaks, and BBT.

What affects prediction confidence?

Recent periods: clear cycles raise confidence; long gaps lower it.
LH peaks (ovulation strips): peaks that align with the window boost confidence.
BBT trends: a sustained rise near ovulation improves certainty.
Consistency: more logs over time = steadier, higher confidence.

Does it change daily? Yes — it can go up or down as you add new data (or if data is sparse). It stabilises as your journal grows.

Why this prediction? We estimate ovulation roughly 14 days before your next period. If your average cycle is longer or shorter, that shifts the window. We then refine using any LH peaks (surge ≈ ovulation within ~24–36h) and a sustained BBT rise after ovulation. The more consistent your logs, the tighter and more accurate the window becomes.

Scan & confirm your prediction

Buy any ovulation or pregnancy test brand. Use your camera to scan — Pretty Kitty AI reads the lines and refines your timing. The more you log (periods, LH peaks, BBT), the better your predictions get.

Ovulation

Low / High / Peak

Pregnancy

Negative / Positive

BBT

Daily morning temperature