Maybe it’s your pickup. What are you using? If you’re using just the microphone built into the tuner, that’s not enough to catch the extreme highs and lows.
I use a Peterson Virtual Strobe tuner with a clip on tuner pickup. It has no issue with the lower strings at all, but for the top two I need to move the clip right onto the tuning peg of the string right below in order to get a good reading.
Hey, Tony, do you have iOS4 installed? I installed the istrobosoft update after that, but the display doesn’t strobe anymore for me, although I can see the numerical readout of how far out the string is. Is it working for you?
Yes, I am running IOS4 and after I updated it also updated the strobosoft app and it works fine for me. Both the strobe display and numerical readout both work.
You might try removing the app, restarting the phone and then reinstalling. That sometimes works for me when I have a misbehaving app.