Tech Architecture Stories

Oct 24, 2026 · Mobile Development

Building a Local-First AI Recording App to Escape Cloud-Locked Recorders

The author builds an offline iOS app called Lynsight using a $27 open-protocol Bluetooth recording card and on-device Gemma 4 model for transcription, speaker diarization, and summarization, integrating with Xiaoyuzhou, Bilibili, Obsidian, and Apple Reminders under a one-time purchase model.