You can find it here: INSTALL JAZZ RATION. This version can run on all smart phones.
If you have a facebook account you can try it out there Jazz Ration on Facebook,
You can also install immediately using these QR codes:
When you install this app, you will receive updates with new material, and sometimes exclusive bonus lessons. It's a convenient way to stay up to date with new material and products.
Especially for the video section you need a good connection to the internet, it will work anywhere, but wifi often works best.
Tip: plug in some earphones, and jam with the backing tracks.
Privacy statement: this app does not collect any information from your phone whatsoever. The Android installer may ask access to several sources on your phone, but these sources of information are never collected or used in any way!