Hope they made the app available soon.If they made an app, one would be able to disable all codecs that aren't used on the UP2 / UP4. so it doesn't matter what phone you use. This is exactly how the FiiO app works. Open App > Disable Codecs > connect to device and the device will use the available codecs on the Shanling. On my fiio I have disabled AAC, Aptx, and LDHC
but I much prefer the sound of my UP2 and it has better battery life too!
UP2 does sound very good. I think this is the best device I had been invested in so far & will not upgrade probably for a few years until it really gets old.
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