It works great, it's free, it has no ads, and it has no in-app purchases. I also like that it shows the Fourier transformer, a feature any mathematician, physicist, or electrical engineer can appreciate!
Works perfectly, simple, truly free, educational and no ads.. I have no idea why this is not more popular.
Works great! Very accurate with no ads! Also has your Fourier transform. Only request I have is to be able to store each reading to keep track of them.
This one is not a ripoff like others, it measures far more accurately
No ads! And it shows the Fourier spectrum.
no ads, no scam, works correctly
Fixed bug for devices without flash.
Most Precise Heart Rate Monitor Ever + Unlimited Measurements and Records.