How it works: Like other urine tests, this one looks for LH. It doesn’t have a plastic stick like other tests -- it's just a paper strip that looks a little like a litmus test (remember, from high school chemistry?!). You’ll pee into a cup and then dip in the stick for three seconds. Five minutes later, it will be ready to read. If you see a test line that’s as dark or darker than the control line, you’ll ovulate within the next 24 to 48 hours.
How accurate it is: No word on the exact accuracy stats, but it works on the same premise as other, pricier kits do.
Pro: They’re great if you think you’ll be testing a lot. You can’t beat the price!
Con: Some find the results tough to read, since line darkness may be hard to judge.
Bumpies say: “I bought the Wondfo's from Amazon. This was the first time I used them, and I have no complaints.”
“I used digitals when I got pregnant with my daughter. But this time around, I'm using Wondfos. In the three months I've been trying, I don't think I've even spent what I did on one month’s worth of digitals.”
“The interesting thing about the Wondfos is that you can see the progression from a very faint line to a dark line. With a digital test, it's all or nothing.
Price: $16 for 25 strips, Amazon.com