QuestSync is an Android auto-sync & backup app. Back up photos, videos & any folders to Google Drive, Dropbox, OneDrive, Internxt, MEGA, pCloud + 25 more clouds/NAS. Supports one/two-way sync, mirror, move, cloud-to-cloud transfers. InstaSend shares files nearby via QR (no install/cable). Background resumes, private (direct to your clouds). Free basic; Pro adds schedules & advanced sync.