So I took some tests from my Nutrafin test kit. It doesn't measure pH exactly, just gives ranges. According to Seneye, my pH is 8.03. According to Hot tub digital meter, 8.3. According to Nutrafin Test Kit, between 7.5 and 8.0. Although, multiple opinions think that its closer to the 8.0 then 7.5. As for Temp, Seneye says 76F, my cheap digital says 77.5 and my expensive digital says 78.5. I'm not as concerned with the Ammonia readings because Seneye says 0.004ppm and my Nutrafin Test Kit says 'unmeasurable' which means that its fine.
My wife works in a Lab and is thinking about sneaking a sample in to work one day and getting exact results for me.