JSON, made readable.
AI, kept private.

Getting started

Open JSON Pilot and bring in a document any way that suits you: tap Paste from Clipboard on the Entry screen, tap Open File…, or use Open in JSON Pilot from Files, Mail, Safari, AirDrop or the share sheet. Files are decoded as UTF-8 first and Latin-1 as a fallback, so awkward encodings still open instead of erroring.

The three views

Every document opens into one workspace with three tabs: Tree for structure, Fields for tap-to-edit drilldown, and Text for raw source with line numbers. Edits sync across all three, and the check mark in the nav bar tells you instantly whether the document parses.

Editing and repair

In Fields, tap any leaf to open the Edit Field sheet — change the value, the key, or the type (string ↔ number ↔ bool ↔ null), or delete it. Add a sibling with the inline “Add” row. Prefer raw text? Edit as Text drops you into a monospaced editor with a live Valid / line:col error banner; Apply commits the text back through the parser.

When input is invalid, Auto-fix (Pro) runs a deterministic relaxed-to-strict repair pass — trailing commas, // and /* */ comments, unquoted keys, single-quoted strings, and smart quotes — then re-parses. If the fix is only partial, the result opens in the editor with the residual error highlighted.

The on-device AI assistant

Open the AI chat on any document and pick a starter — Explain this JSON, Find issues, or Extract emails — or ask your own question. Replies stream as the model thinks, in your language, formatted with lists, bold text and code, and the conversation persists while the document is open.

The assistant is powered by Apple Foundation Models and runs entirely on your device. Your JSON, your prompts and the model's answers never leave the device — there are no AI servers, no API keys and no cloud fallback. It is gated by capability, not OS version: if Apple Intelligence isn't available, the chat tells you exactly why (device not eligible, Apple Intelligence turned off, or the model still preparing) and the rest of the app keeps working. Longer documents are truncated to a 6,000-character context budget, with a note so the model knows it's seeing a slice.

Power tools

JSON Diff compares two documents by meaning — reformatting or key reordering never shows as a change — and lines up array items, and offers a Summary view (Changed / Added / Removed) and a GitHub-style Unified view. JSONPath supports $, .key, ['key'], [index], [*], recursive descent .. and negative indices, with matches highlighted right on the Tree.

Format conversion exports the current document as YAML, CSV or XML. The built-in HTTP request tool sends GET / POST / PUT / PATCH / DELETE with custom headers and a body for non-GET methods, over http(s) only, with a 30-second timeout — and opens the response straight into the workspace. Responses are never cached on disk, and cookies are kept in memory only.

Privacy and storage

JSON Pilot opens network connections in exactly two situations, both initiated by you: StoreKit for purchases and entitlement refresh, and the HTTP request tool when you tap Send. Nothing else opens a socket — no analytics, no telemetry, no crash reporters, no third-party SDKs.

Recents are stored locally with SwiftData (CloudKit is explicitly off), capped at 60 entries. Your settings live in UserDefaults. To clear everything, use Settings → Data & Privacy → Clear Recents: it erases your history together with every local copy of your documents, including the copies made for sharing and the files other apps handed over. Or delete the app. The original files you opened are untouched unless you explicitly tap Save.