What's a good ovulation ipod/iphone app?

Have any of the ladies on here ttc used any good iphone/ipod apps for tracking your periods, ovulation etc?

Hubby and I have been ttc for nine months and I though one would be useful to help us along. Can you recommend a good one?

My suggestion is to download 5 free ones and see which one you like. So far, I haven't liked any of them, personally, and stick with an online one.

I use both WomanLog Pro and MyDays X. WomanLog Pro is one you pay for (there's a free version, but the Pro version is pretty cheap), though I don't remember with MyDays. I started with MyDays and then downloaded MyDays X, which I like better.

One thing to warn you about, though… Don't rely on an app to tell you when you're ovulating. Not all women ovulate perfectly mid-cycle, and in the 7 months I've been using these apps (I started tracking everything before starting TTC), MyDays has gotten my O-date right precisely ONCE. WomanLog never has, and it's usually 1-3 days early. But in both, if you're using OPKs or other O-tracking methods, you can manually set your ovulation date when you know it has occurred. You can also custom-set your luteal phase if it tends to be the same every cycle.

I use fertility friend because it syncs to the website instantly. I LOVE it and its very easy to navigate/read. I recently paid $25 for a year subscription, but I hope I won't need it for that long.