Vays vs JSON DevKit Editor

Your AI writes Markdown all day. Now you can read it anywhere. VAYS MD is a native iPhone and iPad reader and editor for .md files — READMEs, specs, meeting notes, transcripts. Open a file and read it like a document, with real typography, not source code. No cloud in the middle. Nothing leaves your device. READ • GitHub Flavored Markdown: tables, task lists, strikethrough • Callout cards — GitHub [!NOTE] / [!TIP] / [!WARNING] and Obsidian styles • Display math typeset natively — no web view • shields.io badges drawn natively, front-matter shown as a tidy card • Footnotes become superscripts with gathered definitions • Mermaid blocks appear as clean code cards (full diagram rendering is on the roadmap) • Dark mode tuned for night reading WRITE • Source editor with Markdown highlighting • Autosave straight back to the file — no export dance • Works with the Files app: iCloud Drive, On My iPhone, and any provider PRIVATE BY DEFAULT No account. No analytics. No network requests. Your documents stay in your storage, exactly where they were. BETTER TOGETHER WITH THE MAC APP VAYS MD Reader for Mac adds a folder library, Mermaid diagrams rendered offline, a visual diagram creator, QuickLook, PDF export and Claude Code integration. Same design, same privacy. PART OF THE VAYS FAMILY From the maker of Vays, the private voice-note app. Record on the go, read the transcript beautifully. Built by a solo developer. Every feedback email is read.

JSON DevKit is a JSON workbench for iPhone and iPad. View, edit, format, validate, convert, and compare JSON in one place—built for developers, QA engineers, and API testers who need fast answers on mobile. CORE WORKFLOW • Open JSON from the editor, clipboard, files, or a URL • Pretty-print or minify with syntax highlighting and line numbers • Explore structure in tree view or flatten nested data into a table • Run JSONPath queries and inspect matched results • Generate and validate JSON Schema • Compare two JSON documents with a synced side-by-side diff • Convert JSON to CSV, TSV, XML, YAML, TOML, TOON, Markdown table, HTML, or Base64 • Generate model stubs for Swift, Kotlin, TypeScript, Dart, Java, Python, and C# BUILT FOR REAL WORK • Multi-tab workbench keeps source and output snapshots as you switch tools • Large payloads are processed off the main thread with progress feedback • iPhone and iPad layouts adapt to your device—same tools, optimized navigation • Recent history helps you return to earlier documents quickly PRIVACY BY DESIGN • All JSON processing happens on your device • No account required to use core features • Firebase Analytics (Google) collects anonymous usage events only—no JSON content or ad identifiers • No ads, no subscriptions, and no in-app purchases. All tools are included. • Your data stays local unless you explicitly copy, share, or export it Whether you are debugging an API response, checking a config file, or converting JSON for a report, JSON DevKit keeps the workflow focused and fast.