Use AI on client documents. Keep the names on your Mac.

PiBye is a Mac app that hides names, addresses and ID numbers in a copy of a document before you share it with AI, and puts the real details back when the reply comes in. On your Mac it finds names, ID numbers, addresses, dates of birth and other personal details, hides each one behind a consistent placeholder such as [PERSON_001], and lets you keep any of them readable. The key stays on your Mac, so PiBye restores the real details into the AI’s work locally.

Download PiBye and use it. Your first 10 documents are free, with every feature: hide, review, restore, Lock PDF, the Claude Desktop and ChatGPT desktop app connections, and Live AI drafting. A document counts once, when PiBye first prepares it; a document you finish with Live AI counts too. There is no PiBye account, no card and no time limit, and free users still receive updates.

PiBye does not upload your original documents: it prepares and restores them locally and has no cloud relay. Anything you choose to share with an assistant has already been redacted and reviewed by you. This includes a reviewed copy sent through optional Live AI drafting. When you enable the optional local connection to Claude Desktop or the ChatGPT desktop app, that assistant can read the approved Markdown Documents you select and submit generated Markdown for review. Your AI provider processes whatever copy you share with it, remotely.

Provinces and states, monetary amounts, generic occupations, case dates (hearings, filings, decisions, interviews, deadlines), courts, tribunals and citations, statute and rule numbers, judges and public officials, government agencies and their published contact details, form codes such as IMM 5257 or I-130, program names such as PGWP and LMIA, and medical terms named after people stay readable, because the AI needs them to do the work. Names, street addresses, postal codes, dates of birth and life events, cities tied to a person, employers, nationality and country of origin are replaced. Anything you choose to keep during review stays visible too.

Read the source and the complete prepared copy before sharing. If identifying information remains that you cannot resolve in Review, do not share the copy. Correct the source and import it again.

The current build targets Apple Silicon Macs running macOS 14.8.5 or later. There is no Intel build.

Two ways. Copy the AI-ready text into any AI chat, or connect Claude Desktop or the ChatGPT desktop app locally so they can read the approved copies you select. The connection runs on your Mac with no PiBye cloud relay, and the key to the real names never leaves your Mac. Your AI provider still processes what you share, which is the case with names and identifiers already replaced.

PiBye was run on 50,119 real public documents, mostly court filings and blank government forms, and the results are published: independent checks found 84,037 identifiers, and 24 were still readable after redaction, all number-shaped and mostly from court filings. Every release must also pass a release gate: 157 frozen real and synthetic documents run through the notarized app and compared with the previous release, with no new leaks allowed, plus a 100-page stress test. A second battery on harder material is still running. None of this proves your document is clean, so review every copy before sharing it.

No, it is pseudonymized, and that is deliberate. Names, ID numbers, addresses and postal codes become tokens, and the key to reverse them never leaves your Mac. The AI provider receives the case with the identities swapped out and does not hold the key that reverses the tokens; you keep the ability to put the real names back.

When you go to prepare an 11th document, PiBye asks you to buy a licence: $99 CAD one-time, which unlocks unlimited documents and includes 12 months of updates. Nothing you already have is taken away: documents you have already prepared, your saved matters, Restore and Lock PDF are never blocked.

No. PiBye's local processing and review controls are product behavior, not a certification or a guarantee that a particular use meets your professional obligations.