[jaldoretta]

Thanks! It's awesome to hear from another person in this space. We're still working out our business model (right now we're planning a subscription-based app to practice FAM/NFP, but that could change). But we have plans to add more features and perhaps another product. Hardware may also be in our future =)

[ntaso]

Well, good luck to you then :)

There are a few more people in this space, especially in the app market. Recently, "Glow" was released, which is more aimed towards women who want to conceive, but they might go into the birth control segment. Although I think they will fail with their current product in this market.

There's Clue (helloclue.com); Ovuline; TrueCycle (seems to be dead?); and all the gibberish period calendar apps.