I use a Peterson strobe tuner on my smartphone, it's really good. I've also coded my own strobe tuner to learn more, unfortunately no mobile version yet. https

I use a Peterson strobe tuner on my smartphone, it's really good. I've also coded my own strobe tuner to learn more, unfortunately no mobile version yet. https://github.com/dsego/strobe-tuner https://github.com/dsego/strobe-tuner