Trueplay on a PC or Mac wouldn't work. If you think you look stupid enough walking around waving an iPhone above your head imagine the looks you'd get if you roamed about waving an iMac or Dell Workstation over your head?
As for Android the reason it isn't available is due to the massive variation in hardware (mainly microphones) which means Sonos can't practically ensure correct calibration and therefore performance of TruePlay on those devices. It seems unlikely that Sonos will be practically able to crack the Android problem whilst TruePlay relies on the microphone in the phone/tablet unless they can resolve the calibration conundrum. It may be in the future they find AN Other way to run the process eg with microphones in the Play units.
Until then the advice is to steal an iPhone or iPad (sorry I mean bribe a friend with biscuits, beer, wine, favours) as the process is pretty much a one time process.
Arc + Sub (Gen 1) + 2 x Play 1/ Stereo Play 3s/ Era 100 Stereo in Kitchen, One Stereo in Bedroom, Play 1 stereo pair in Study, Play 1in Bathroom, Sonos Move 2