I think that Mapping Tonal Harmony (MTH) is being greatly underestimated - it has better sound quality, provides an impressive method of harmonic analysis and harmonisation), produces higher quality materials, and is better for learning both as a beginner jazz musician and as one who wishes to get into advanced learning. It only compares unfavourably with IReal Pro (IRP) in the areas of cost, user base and engagement (the forum), and the availability of sheets (far more numerous, easily downloadable, and available at no cost).
MDecks have just released "MHT Jazz Playalong" which is free. You can dismiss this on the basis that the user has to pay for in-app purchases (that provide the jazz standards which IRP users can get for free) but this is obviously a move that is taking aim at the same users that are interested in IRP and this "competition" is set to become more difficult for IRP ([IMO] Windows and Android versions of MTH are on their way, probably finished [or nearly complete] and just waiting for the right time to release).
Over the years IRP has been slow to make improvements and updates have been ok but not impressive. IRP needs to improve their sound engine, introduce major improvements (e.g. melody and sheet music features [yes, I know that IReal pro can't reproduce copyright melodies but there are other things you can do], much more interesting and varied rhythms, user defined rhythms, reharmonisation and simplifying harmony features, harmonic analysis, etc), introduce minor (what should be trivial) changes (like chords, user-defined chords and images) quickly and develop a vision for the future (because it obviously isn't being provided by the feature request forms) - I'm afraid that I don't see IReal Pro doing any of this at present.
There is a lot IRP could learn from MTH.
)BOB
