Trying for a baby usually starts with one simple question: when am I fertile? Tymi estimates your fertile window and likely ovulation day from your period dates, lays your cycle out on a calendar and lets you log symptoms, mood and sleep. The maths stays on your device, with no account or ads — and the day the test is positive, the same profile switches to pregnancy tracking.
Frequently asked questions
How do I work out my ovulation date?
Ovulation usually happens about 14 days before your next period, not 14 days after the last one: on a 28-day cycle that is around day 14, on a 32-day cycle around day 18. Tymi uses the average length of your recent cycles to estimate the day and refines it with every period you log.
How long is the fertile window?
About six days: the five days before ovulation and ovulation day itself, because sperm can survive up to five days and the egg about 24 hours. Intercourse in the two or three days before ovulation matters most. It is a statistical estimate — never a method of contraception.
When should I see a doctor if it takes time?
Common guidance is to seek advice after twelve months of trying without contraception under 35, and after six months from 35 — sooner if cycles are very irregular, very long or absent. A cycle history logged in Tymi is a useful starting point for that appointment.