The experience of the coder. The complexity and size of the app. How bulletproof the app has to be, e.g. something to be run by a hundred tolerant people vs generally released to the public. The country the coder is living in.
A: On transvaginal ultrasound, you can usually see the heartbeat by about four weeks after conception. In obstetrics, we traditionally count weeks from the last period. For a woman with 28-day cycles, a month pregnant is about two weeks after conception, and you would not expect to see a heartbeat. But by a month after conception, youâd be right around the time a heartbeat is expected.
You're likely to hear your baby's heartbeat for the first time at your dating scan. This usually happens between 10 weeks and 13 weeks plus six days, although your baby's heart will have been beating from about six weeks onwards. Hearing your baby's tiny heart beating for the first time is an exciting moment. You'll hear a rapid drumming sound that's about twice as fast as your heartbeat.