Nuance does not have a native "Dragon Pro APK" for Android. Instead, the official mobile application is called Dragon Anywhere .
A cloud-based, professional-grade dictation app. Download DRAGON PRO apk
It acts as a standalone text editor. You cannot use it to dictate directly into other apps (like WhatsApp or email) as a replacement keyboard. You must dictate in the app and then copy/paste your text. Nuance does not have a native "Dragon Pro APK" for Android
Users note that the transcription rate is phenomenal when it works, requiring minimal editing. It acts as a standalone text editor
Because it is cloud-based, you cannot use it offline like the desktop PC version.
If you are looking for an app called "IDRAGON PRO", it is actually an Indian video-on-demand streaming platform called IDRAGON-VOD on Google Play rather than a dictation tool.
If you are looking to dictate on your phone, you should download Dragon Anywhere on Google Play or the iOS App Store.