The layout is simple and you can choose from a decent list of skins so it’s highly visible under any circumstances. It’s a chromatic tuner, so there is a bar at the top with notes and a big Hz meter below with the selected note in the center with a contrasting-color line.
You have three options for tuning method, accessed via buttons at the bottom of the screen. The one to the left plays a sound in the note selected, replacing a pitch pipe or tuning fork. The middle button is for tuning only to the selected note. For both of these methods you need to select the note you want by tapping it on the note bar (you can reach other notes by scrolling left or right).
The button to the right, however, is my favorite, “Tune auto”. When you play your instrument the note bar highlights the note you are playing and the meter shows how close you are to it. I like it because it’s what I’m used to and there’s no need to touch anything but my guitar strings when switching between them.
The only problem I could see with using my Droid out in the real world where a tuner is truly necessary (like a gig at a loud bar) was that it’s important to be able to plug in. I grabbed a 1/4” to mini-plug adapter I had kicking around and used it to plug my guitar cable into my Droid’s headphone jack. Lo and behold, it worked! I haven’t tried this with an electric guitar yet but will update this post when I do.
When you get into the settings you really see the beauty of this tuner. You can adjust the microphone sensitivity (I’ve never had to, personally), choose what instrument it should be optimized for, and a whole lot of advanced settings most users probably would never touch but are great to include for those who need them.
Or, to put is simply, this is the most flexible tuner I’ve ever found and so far, so accurate at a miniscule fraction of the price of my junky tuner. Need I say more?