That is all normal, I don't think you have a problem, but if you want to be sure get TorquePro for your smartphone and
a relevant bluetooth OBDC dongle, or get an ultragauge like I have run for 8 years now.
You can get the ultragauge in non-bluetooth or bluetooth for around $80. I prefer the non bluetooth :
https://ultra-gauge.com/ultragauge/ultragauge_wired.htm
or
https://ultra-gauge.com/ultragauge-blue.htm