AI should work for you,
not worry you.
AIは、不安のもとではなく
あなたの味方に。

Private AI apps and free tools that run on your device. No ads, no account.端末上で動く、プライベートなAIアプリと無料ツール。広告なし、アカウント登録も不要です。

Get Privaku PhotosPrivaku Photosを入手Try free tools無料ツールを試す
Out now · iOS 18+配信中 · iOS 18以降

Privaku Photos

Clean up duplicates and find photos on your iPhone. Free, no ads or subscriptions.iPhone上で重複・類似写真を整理し、写真を探せます。無料、広告やサブスクリプションなし。Get it on the App Store →App Storeで入手 →Privaku Photos cleanup screen showing exact duplicates and space to freePrivaku Photosの整理画面。完全に同じ写真と空き容量を表示
Beta · Mac

Agent Shield

Stops AI coding agents from touching files, secrets and commands they shouldn't. Free.AIコーディングエージェントが、触れてはいけないファイル・秘密情報・コマンドに触れないよう止めます。無料。Download for Mac →Mac版をダウンロード →
Privaku EyeBeta · Macベータ · Mac

Privaku Eye

Control your Mac in plain English from Privaku Talk, with approval before anything risky. Works offline after first setup. Free.Privaku TalkからふだんのことばでMacを操作。危険な操作の前には必ず承認。初回セットアップ後はオフラインで動作。無料。Download for Mac →Mac版をダウンロード →
For businesses法人向け

Privaku OnDevice SDK

On-device AI for businesses. Licensed.法人向けのオンデバイスAI(ライセンス提供)。Contact us →お問い合わせ →
Coming soon近日公開

Privaku Talk

Humans. Agents. Devices.人も、エージェントも、デバイスも。

POWERED BY OSAPOSAP is an open protocol by Privaku for AI agent and hardware communication.OSAPは、AIエージェントとハードウェアの通信のためにPrivakuが定めたプロトコルです。Chat with friends and your own AI agents in one private app. Your chats are end-to-end encrypted, and your AI agents ask before they act, with each action approved by Face ID. It's 100% free, with no ads. Ever.友だちと自分のAIエージェントに、ひとつのプライベートなアプリで話しかけられます。チャットはエンドツーエンドで暗号化され、AIエージェントは実行前に必ず確認し、Face IDで承認できます。完全無料、広告は一切ありません。
  • End-to-end encrypted chats, photos and read receiptsエンドツーエンド暗号化のチャット・写真・既読表示
  • Connect your AI agents and approve their actions with Face IDAIエージェントを接続し、Face IDで操作を承認
  • Add a friend in one tap with a link or QR codeリンクやQRコードでワンタップ友だち追加
  • 100% free, no ads, no tracking完全無料・広告なし・トラッキングなし
  • Devices and Privaku Hub: coming soonデバイス連携とPrivaku Hub:近日公開
Try it on the webWebで試すiPhone app coming soon to the App StoreiPhoneアプリはApp Storeで近日公開
Chats between people and your paired agents are end-to-end encrypted. Third-party AI apps you choose to connect (like ChatGPT) are not end-to-end encrypted.人同士、およびペアリングしたエージェントとのチャットはエンドツーエンドで暗号化されます。ご自身で接続する外部AIアプリ(ChatGPTなど)はエンドツーエンド暗号化の対象外です。

Runs on your device.
Your photos and files aren't uploaded.
端末上で動作します。
写真やファイルはアップロードされません。

On-deviceオンデバイスPrivate AI that runs on your device.端末上で動くプライベートなAI。
No cloud uploadアップロードなしFree web tools, nothing uploaded.無料ウェブツールもアップロードなし。
No ads, no account広告なし、アカウント不要Privacy policyプライバシーポリシー

Open source contributionsオープンソースへの取り組み

Code and specs we publish on GitHub, so anyone can review them.誰でも確認できるよう、GitHubでコードと仕様を公開しています。All open source →すべて見る →

Agent view: plain markdown of this page. Also atエージェント向け表示:このページのMarkdown版です。こちらでも取得できます: /index.md · /llms.txt · /llms-full.txt · /tools/agents.json

# Privaku

> AI should work for you, not worry you. Privaku is a small studio in Tokyo (Made in Japan) that makes private AI apps and free browser tools that run on your device. No ads, no account.

## Apps

- [Privaku Photos](https://privaku.com/ask-my-photos/) — status: out now (iPhone, iOS 18+, free). Clean up duplicates and similar photos, find photos, Emergency Docs, Check before you share, Privacy Leak Scan, Roast my camera roll and video size badges. [App Store](https://apps.apple.com/app/id6821608477)

- [Privaku Talk](https://talk.privaku.com) — status: coming soon (iPhone app coming soon to the App Store; try it on the web). Humans. Agents. Devices. Powered by OSAP (OSAP is an open protocol by Privaku for AI agent and hardware communication). End-to-end encrypted chats with friends and your own AI agents; agents ask before they act, approved by Face ID. 100% free, no ads. Third-party AI apps you connect (like ChatGPT) are not end-to-end encrypted.

## For AI agents and teams

- [Agent Shield](https://privaku.com/agent-shield/) — status: beta (Mac, free). Stops AI coding agents from touching files, secrets and commands they shouldn't, by checking each tool call against your rules. [Direct download](https://privaku.com/download/agent-shield.dmg) (Agent-Shield-0.1.0.dmg, macOS 13+)
- [Tools for AI agents](https://privaku.com/tools/agents/) — status: live. How agents use the free tools headlessly.
- Privaku OnDevice SDK — status: licensed, for businesses. On-device AI. Contact: hello@privaku.com

## Free web tools (run in the browser, files are never uploaded, no sign-up, no limits)

- [Translate anything](https://privaku.com/tools/translate/) — free offline translator for photos, PDFs, Office files, videos, camera and screen; 100% on-device.
- [Photo privacy check](https://privaku.com/tools/photo-privacy-check/) — see what a photo reveals (location, device, date, faces, AI signals) and get a clean copy.
- [Remove photo location](https://privaku.com/tools/remove-photo-location/) — remove GPS, camera and EXIF metadata from JPEG, PNG and WebP.
- [Screenshot to text](https://privaku.com/tools/screenshot-to-text/) — copy text out of an image (English, Japanese, Hindi and more).
- [Reduce photo size](https://privaku.com/tools/reduce-photo-size/) — shrink a photo to a KB/MB target.
- [Image to PDF](https://privaku.com/tools/image-to-pdf/) — combine images into one PDF, or merge PDFs.

## Using the tools as an agent

There is no server API; tools run client-side in a browser the agent controls.
- Docs: https://privaku.com/tools/agents/
- Manifest: https://privaku.com/tools/agents.json
- Invoke: `window.privakuTools.run(tool, fileOrFiles, options)` on any /tools/ page; `window.privakuTools.inspect(file)` returns metadata groups.
- URL params preset options, e.g. `?remove=gps,xmp`, `?lang=jpn`, `?maxKB=200`, `?blurFaces=true`.

## Key pages

- All apps: https://privaku.com/products/
- Support: https://privaku.com/support/
- Privacy policy: https://privaku.com/privacy
- Contact: hello@privaku.com