Zahdoo offers several mobile applications for Android and Kindle Fire devices, including: 1) Voice applications like voice reminders and notes 2) A family organizer app to manage schedules, lists, and tasks 3) A note-taking app that allows writing and importing notes 4) A birthday and anniversary tracker to send reminders and cards 5) Study tools to help students stay organized 6) A diary app to record memories with photos, audio, and video 7) A personality test to assess compatibility and self-improvement