DSP software is found here for Android and PC. Apple App software MUST be had at the Apple App Store. If you have the DSP150.4/DSP125.4 then the CA AMP software is what you want. The ICONs are shown below and so are the QR links to the DSP software. Scan away!
The DSP88 stand alone DSP processor uses slightly different software and can also be downloaded at the Android or Apple App Store.