Support
Help with Fertility Forecaster
Most questions are about how the number is calculated and why it moves. Those are answered below. Anything else, email a human.
Email support
Write to goodlittleapps.support@gmail.com. A real person reads every message, usually replying within two business days.
Please don't include personal health details — we don't need them to help, and we'd rather not have them.
Before you write
It helps to know your iOS version, your iPhone model, and the app version from the How this works sheet. Screenshots are welcome.
If something looks wrong in the estimate, tell us the inputs you used and we can check the model against them.
Common questions
Answers
Where does the number come from?
Your age sets a baseline per-cycle chance, interpolated from fecundability estimates in published preconception cohort studies and ASRM age-related fertility guidance. Each optional answer you give carries a fecundability ratio — the factor by which that group's conception rate differs from the reference group in observational research — and those adjust the baseline. The How this works sheet inside the app explains every step and names the sources.
Why does my chance drop the longer I've been trying?
Because that is what the evidence says, and it is not a judgement about you. Couples differ from one another in ways no questionnaire can capture. The app carries a distribution over your per-cycle chance rather than a single number, and each cycle without a pregnancy shifts weight toward the slower end of that spread. This is ordinary Bayesian updating. It is also why the drop is not a verdict — plenty of couples in the slow tail go on to conceive.
I use ovulation tests. Why doesn't the app ask how often we have sex?
Because for couples who time deliberately, whole-cycle frequency is the wrong question. What matters is how many times sex happens during the days you're targeting, and how reliably your method finds those days. If you tell the app you're timing, it asks that instead. Averaging across the whole cycle would make careful timing look like low frequency and count it against you.
Why doesn't a low AMH result lower my number much?
Because the research doesn't support it. AMH is a good predictor of how you would respond to IVF stimulation, and a surprisingly poor predictor of natural conception. Steiner et al. (2017) followed women aged 30–44 and found that low AMH did not meaningfully reduce the chance of conceiving naturally. The app reflects that rather than the folklore.
Why is there no cycle tracking?
Deliberately. There are excellent apps for logging periods, and this isn't trying to be one. Fertility Forecaster answers a different question — what your chances actually are — and needs nothing logged daily to do it.
Do I have to answer every question?
No. Age is the only input the app needs. Everything else is optional, and skipping a question is not a penalty — it simply leaves that part of the estimate at the population average. A guess is worse than a blank.
How do I delete my answers?
Open Details and tap Reset in the top right. Your age stays and everything else returns to unanswered. To remove everything, delete the app — its storage goes with it.
Is my data private?
Yes, in the strongest sense available: the app has no account, no server, and makes no network requests at all. Nothing is transmitted, so nothing can be intercepted or requested from us. See the privacy policy.
Can I trust this instead of seeing a doctor?
No, and the app says so throughout. It produces population estimates from published research. It is not a diagnosis, not a medical device, and cannot see anything a clinician would find. If you have been trying for a year — or six months if you're over 35 — that is the usual point to seek advice, regardless of what any app tells you.