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.
Many reviewers report frustration with logging in, app freezes, and frequent crashes. Download DRAGON PRO apk
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. It acts as a standalone text editor