If you are looking for specific portable APK files for Android, these platforms often host fan-made Kamen Rider "Drivers":
While there isn't one "official" app, several developers have created simulators that allow fans to experience the magenta-colored touchscreen device that debuted in the Rider Time: Kamen Rider Zi-O VS Decade
. Unlike the original 2009 version, the "21" edition includes crests for all Heisei-era Riders plus Kamen Rider Zero-One . Physical versions, such as the DX Neo Decade Driver K-Touch 21 set, were released by Premium Bandai for collectors. Important Download Tips
: This is one of the most popular simulation apps. It replicates the transformation mechanics, allowing users to activate K-Touch codes via an interactive, responsive touch interface. CSM Decadriver Kamen Rider