Available for macOS

Never miss
a beat.

Kioku lives on your Mac, quietly capturing what you hear and see — then lets you ask ChatGPT or Claude anything about your day, and actually get an answer.

macOS 14+ · Pure Swift capture · Encrypted cloud processing

"What did the client say about pricing this morning?" — Ask your AI assistant anything. Kioku provides the context.

Three steps to total recall.

01

Install & sign in

Download Kioku, sign in with Google in one click, and connect it to ChatGPT or Claude as an MCP tool. That's the entire setup.

02

It securely captures and uploads your day

Kioku’s pure Swift client packages bounded mic and system-audio snippets, screenshots, timestamps, and available browser context, then uploads them to the attested cloud service. Vertex Gemini handles transcription, diarization, OCR, and screenshot understanding there.

03

Ask ChatGPT or Claude anything

"Who was in my 2pm call?" — "What did we decide about the launch date?" Just ask. Kioku surfaces the moment from your archive and cites it.

Thin capture clients. Encrypted, auditable cloud processing.

The Mac and iPhone apps upload bounded audio, screenshots, timestamps, and available browser context to Kioku’s attested cloud service. Media is encrypted per user before persistent storage; Gemini handles media understanding, while persistent voice identity is learned inside the enclave.

Pure Swift capture clients

Apple-native clients capture, encode, timestamp, spool, and upload. Transcription, OCR, diarization, identity learning, and indexing run in the cloud, with no Python, model, or local server in the Mac app.

Hardware-attested secure enclave

Your text archive lives in a GCP Confidential Space VM (AMD SEV memory encryption). The per-user AES-256-GCM decryption key is only released to the exact, attested enclave image — not to us, not to GCP operators.

GCP Confidential Space · AMD SEV

Per-user AES-256-GCM encryption

Every user's database is encrypted with a separate key. Even in the unlikely event of a data breach, one user's data reveals nothing about another's.

Open source — verify it yourself

The enclave image is open source. You can inspect exactly what code runs in the trusted environment and confirm that the attestation matches the published source.

View enclave source on GitHub →

Download for Mac

Kioku quietly captures what you hear and see on your Mac, completely on-device. Free and open source.

Download Kioku for Mac

Requires macOS 14 (Sonoma) or later • Apple Notarized & Security Checked