- Joined
- Sep 15, 2013
- Messages
- 16,339
- Reaction score
- 628
Congrats! Countdown to Pregnancy has a great beta calculator app where you plug in your two test days and time (to the nearest hour) and numbers and it'll spit out a doubling speed for you. I also like it because it has thecharts underneath of expected doubling times and average hcg levels