I built Callvent because every work call vanished the moment I hung up. Now a call ends, you get a notification, and one tap saves it to the calendar you already use, with contact, note, tag, and callback reminder. Works with regular calls plus WhatsApp, FaceTime, Telegram, Signal, Teams, and Zoom, and writes to iCloud, Google Calendar, Exchange, or CalDAV. Everything stays on your device: no account, no cloud, no tracking. Native for iPhone, Android, Apple Watch, and Wear OS.
