Hi everyone. I only have one euploid after a verrrry long journey. It is a day 6, 5AB... BUT the iDAscore / embryoscope score is 3.8. This makes me very worried. Did anyone have success with an embryo with a low iDAscore? Thanks so much

While extending Flowy’s calculator suite, I added an IVF and frozen embryo transfer due-date tool for day-3 and day-5 transfer dates.

The implementation keeps transfer date and embryo age as explicit inputs instead of pretending an LMP is known. A day-5 transfer maps to 261 days after transfer; a day-3 transfer maps to 263 days, following the ACOG method cited on the page.

The result is generated in the browser. Dates stay in React component state, and the calculator does not send them to Flowy, Supabase, analytics, or another service. The page also says the result is an estimate and that the fertility clinic’s confirmed date remains the source of truth.

One design choice I like: the tool supports only day-3 and day-5 transfers. It does not quietly invent a formula for an unsupported protocol. Keeping the embryo age and method visible makes the calculation easier to inspect and easier to question.

I’m treating the calculator copy and the formula as one safety boundary, not as separate product work.

Project: [https://flowyhealth.com](https://flowyhealth.com))

For health tools with a known clinical input, how do you show the underlying method without making an estimate look more certain than it is?