First off, most software companies would charge the app’s price for each of the >20 songs featured in this app; as singular app purchases.
If you’re not familiar with Loueke’s virtuosity, you better start researching, i heard him for the first time playing in hancock’s band and been a fan ever since. ,
ALL songs are immaculately notated for all instruments, sheet can be followed synchronously w/ the music, or browsed/zoomed at user's own leisure.
Each instrument can be turned on and off, and bpm & tonality changed, w/o ever pausing the music, and without slightest lag.
Best of all? Coders involved demonstrate virtuosity on par with Mr. Loueke's , judging by the polished experience; 2 months of heavy testing, NOT a single lag/crash/glitch, ever.
I’ve been an IOS app junkie for 4 years, and this is by far my fav. App so far.
For the breadth of material being offered, 7 dollars is beyond cheap, it’s salvation-army pricing.