Short answer: On iPhone, Bark can’t read in‑app DMs for Instagram, Snapchat, or WhatsApp due to iOS restrictions; it focuses on iMessage/SMS/MMS, photos/videos, Safari/web activity, and some connected accounts (e.g., Gmail/YouTube, limited Instagram activity like captions/comments). No jailbreak is required—setup usually means installing the Bark iOS app, approving the device profile for web filtering, and enabling iCloud or Wi‑Fi backups (via Bark Desktop) so Bark can analyze backups. Alerts are sent when issues are detected; on iOS they arrive after the next backup/sync (not true real time), while Android’s coverage is broader and closer to real time for many social apps. If you share the iPhone model and iOS version, I can give exact setup steps and the current iOS support matrix.