I have been looking for good charting program for over 20 years. I was blown away to find it (first) on an iPhone. It was cool enough to have that available on an iPhone, and later (even better) an iPad, but the fact is, for charting and managing your charts, this is simply the best app I have ever seen. I show this to every musician I play with (and some that I dont.) They are all blown away, and most get it pretty quickly.
One musician I showed it to (a teacher) told me a story about how he was sitting in with a jazz group, when someone in the audience had a request for something they didnt know. They all pulled out their phones, and off they went. This teacher now highlights iRealB in the resources section of the handout he provides to his students.
The developer is responsive (I sent an email a few years back and got an immediate response - but dont hold him to that now - he is probably MUCH busier these days.) He is obviously a craftsman who takes great pride in this product, as he should.
And no, I am not a family friend - I dont know him. I am a longtime software developer myself (thats my day job,) and I really appreciate a well crafted software program like this one. I wouldnt want to be without it.
Outstanding. Ten stars.