This is the first thing I have bought, and so far so good! I appreciate that it allows me to see my exact number. As long as you read the manual and follow what it says, you should be good! I have been using my first urine in the morning, dipping the wand for exactly 10 seconds according to the timer on my phone, keeping the test flat, switching the cover, and then inserting it into the mira device. Make sure not to open the package until you are testing. I opened the package before I took the sample but I think for 100% accuracy, it’s probably best to open it immediately before you use it. So far my numbers are surprisingly low, so I’m curious to see when they will start to rise. I entered my period tracking information into the Mira app and it calculated my days of fertility as the same days my period tracker app calculated, but my test results are still low and say “None” with a low number. I would definitely not have known this without the Mira so I’m hoping to figure out the true time that I ovulate. The only reason I gave it 4 stars is because the tests are expensive. It would definitely be way cheaper to buy a kit of 100 regular ovulation tests and just figure it out yourself, but I’m lazy and I want an app that will give me exact numbers and help me calculate things so it is definitely worth it. I also really like the app, I don’t know why some people gave it bad reviews, but I love the advice sections, the calendar, and the fertility tracking. I also highly appreciate the line graph that follows my test results. I had about a 2 two days ago, then almost a 4 yesterday, and then back to a 2 today so I’m curious to find out if that is normal or not, but I’m glad that I know now. Thank you for making this and giving me the ability to take my own tests and know my own body. I suppose the next thing I would like is knowledge on how to raise my LH level, if that’s possible 😊 Thanks! Also, I received my mira super quickly through the mail. I ordered more tests because I realized that ten was not enough, and they came in super quickly as well. Make sure you check the urine cups, because I accidentally though I had only 2 but there are actually 10 cups in the started pack, they are just thin and stacked upon each other.