Guitar Tuner!

Guitar Tuner! does one everyday job that guitar players understand immediately: it helps bring strings to pitch. By our assessment, that clear focus is the point, because a tuner is most useful when it gets out of the way and gives a quick read on whether a string is sharp or flat. The downside is also simple: it solves one problem and nothing broader, so it will not replace a practice app or a full instrument toolset. In practice, this is a fast, no-nonsense screen people open, tune from, and close again. It sits right where a tuner should sit, and the exclamation mark in the name fits the blunt urgency of the job.