An open-source, self-hosted AI voice recorder. Record on a small device, sync to your own server, and turn conversations into transcripts and summaries with any AI you choose. Own the hardware, own the data, own the workflow.
Nightjar is a pocket voice recorder in the spirit of the AI note-takers you have seen, rebuilt as open hardware and open software. A small ESP32-S3 device records to a memory card at the press of a button. Recordings sync to a mobile app and to a server you control, where they become searchable transcripts and structured summaries. No sealed box, no mandatory cloud, no per-minute bill.
One button captures audio to a memory card. Sync over Bluetooth, WiFi, or automatic upload when on charge.
Your server transcribes and summarises each recording, with the AI provider you chose: local, open, or commercial.
Audio, transcripts and summaries live on your storage. A completely open API means nothing is locked away.
Nightjar is an independent open-source project inspired by the Plaud class of device. It is not affiliated with, endorsed by, or derived from Plaud. Built by 12 Hobbies Studio.