Trusted Reviews is supported by its audience. If you purchase through links on our site, we may earn a commission. Learn more. Korg Mobile App Reviews Korg iMS-20 iPad App Review Score At first it seems impenetrable, but give the Korg iMS-20 some of your time and you'll find it's one of the best iOS music-making apps there is. Review Price: £22.99 Korg Andrew Williams Page 1 of 1