This app has a lot of great exercises, but it’s very annoying. Its constantly asking me to login, and after I finally capitulated and made an account I had no interest in, now its spamming me to invite my friends. Why, I really must wonder, does it care who I invite. I’m forced to conclude that its harvesting email addresses to sell. This must be the price of “free”. I would rather pay $5 then be nagged as much as this app nags.
Aside from that, it’s good at what it does. My only complaint is that the criteria for graduating a goal is too easy. Especially for interval identification. You only need to get 9 of 10 right to complete a goal, and it’s pretty easy to get there if you get lucky, even without having mastered the intervals being tested. In fact, the tests get probabilistically easier as you go, not harder. Simple example: you start the first test knowing nothing. Then you master Unison vs Major Third, now you’re on to the next test which add Perfect Fifth. It’s going to ask a mix of questions, some of which include material you’ve already mastered, so it’s not even testing the newest material. Fast forward a few more tests and now it’s asking you about 5 intervals and you already know 4 of them. In 10 questions, you have a 10% chance of never even getting tested on the new interval. Compare that to the start when you knew nothing, then every question was a relevant test.