Crintech Toolkit

18+ developer utilities in one app: JSON, regex, hashes, JWT, UUID, passwords, converters, an HTTP client and a snippets library. No accounts. No tracking.

Crintech Toolkit bundles the utilities a developer (or any tinkerer) reaches for every day into a single app — no accounts, no ads, and nothing sent anywhere.

TEXT & DATA • JSON formatter — format, minify, validate • Regex tester — match highlighting and example patterns • Text counter — words, characters, lines, paragraphs, reading time • Text diff — compare two texts line by line • Markdown preview — live rendering

ENCODERS • Base64 — encode/decode, URL-safe variant • URL encoder — percent-encoding, query mode • Hashes — MD5, SHA-1, SHA-256, SHA-384, SHA-512 • HTML entities — encode/decode • JWT decoder — inspect header and payload (local decode)

GENERATORS • Lorem Ipsum — paragraphs, sentences or words • UUID generator — v4, in batches, uppercase or dashless • Password generator — configurable, with entropy in bits • QR generator — turn text, URLs or vCards into a QR code

CONVERTERS • Colour converter — HEX ⇄ RGB ⇄ HSL with sliders • Timestamp — Unix epoch ⇄ ISO 8601 • Number base — binary, octal, decimal, hexadecimal • Case converter — camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE and more

NETWORK • HTTP client — fire GET/POST/PUT/PATCH/DELETE requests at any REST API with custom headers and body, and inspect the response: status code, timing, and pretty-printed JSON. Ships with ready-to-run examples.

SNIPPETS Save chunks of text, code or tool output into a local library with tags and search. Everything stays on your iPhone — no cloud, no sync.

PRIVACY • Works offline — the only network traffic is requests you fire yourself in the HTTP client • No accounts, no sign-up • No tracking, no telemetry, no ads • No in-app purchases

Three languages (Spanish, English, Basque), light/dark mode, custom accent colours, and a "tip of the day" widget.