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It says that I could pay for premium to get a custom refresh rate, but I could only go slower, not faster. The fastest refresh rate is 2hz. That is very slow, as these sensors can go up to 60hz with a better app.

Its cool to see how many sensors your phone has

Unacceptable- maximum volume video ad after third click in app without any warning. Immediately uninstalled and gave a one star because of that alone. Bad business. Will avoid developer because of this. So unnecessary- I would have kept the app except for the waking up the dead thing in the middle of the quiet night. Boo.

be very cautious around this app - it reads from your clipboard the moment you open the app and there's no clear reason why it should

I tried to collect the data on noise level and geomagnetic and when sending the reading all I get is reading from one single time point. I cannot get continuous reading.

Only minor gripe is the units on, for example, the “gravity” sensor is wrong since it reports “1 meter per second squared” when I’d expect it to be 9.8 here on earth