For aRacer ECUs, each model has a corresponding app which can be downloaded and installed from here:
For RC MiniX and RC SuperX: aRacer X Tune
App Store - https://apps.apple.com/us/app/aracer-x-tune/id1589890610
Google Play - https://play.google.com/store/apps/details?id=com.aracer.skycal&hl=en_US&gl=US
For RC Mini5, RC Super2, RC Super and RC1: aRacerSmartLite
App Store - https://apps.apple.com/us/app/aracersmartlite/id1291834852
Google Play - https://play.google.com/store/apps/details?id=com.aracer.smartlite
For RC Mini5, RC Super2 and RC Super: aRacerSmart
App Store - https://apps.apple.com/us/app/aracersmart/id1296085645
Google Play - https://play.google.com/store/apps/details?id=com.aracer.smartpro
For RC1: aRacerMobile("aRacer SpeedTek Lite" in Android)
App Store - https://apps.apple.com/us/app/aracermobile/id1218691867
Google Play - https://play.google.com/store/apps/details?id=com.aRacerSpeedtek.aRacerMobile