Developer Tools for iOS
30+ essential tools in your pocket. JSON, Base64, JWT, Regex — all offline, all private. Built for developers who care about speed and security.
All the Tools You Need
From JSON formatting to JWT debugging, we have you covered.
Payloads & Data
BLE Advertisement Decoder
Decode Bluetooth LE advertisements
CBOR Inspector
Decode, encode, diagnostic notation for CBOR
Firmware Inspector
Convert Intel HEX, S-Record, BIN
JSON Formatter & Validator
Format, minify, validate JSON
JSON Query (JSONPath + JMESPath)
Query JSON with JSONPath/JMESPath
JWT Decoder & Verifier
Decode and verify JWT tokens
Plist / Entitlements Inspector
Decode plist and entitlements files
Protobuf Decode Raw
Inspect protobuf wire format bytes
SQL Formatter
Format and minify SQL queries
Text Diff
Compare text side-by-side
TLV / BER-TLV Inspector
Decode BER-TLV for smartcard/NFC
XML Formatter & XPath
Format XML and test XPath queries
YAML ↔ JSON Converter
Convert between YAML and JSON
CSV / TSV Cleaner
Clean, preview, convert CSV/TSV to JSON
.env / ENV Inspector
Parse, normalize, export .env files to JSON
HTTP Inspector
Parse HTTP requests/responses, generate curl
logfmt Parser
Parse logfmt key=value logs to JSON
TOML / JSON Converter
Convert and validate TOML, transform to JSON
Encoding & Decoding
Base64 Encoder / Decoder
Encode and decode Base64 text
Base64 Image Converter
Convert images to/from Base64 data URLs
Gzip / Zlib / Deflate
Compress and decompress data
Serial Framing (COBS/SLIP)
Encode/decode COBS and SLIP frames
String Escaper
Escape/unescape for JSON, HTML, backslash, unicode
Base-N Studio
Base32 and Base58 encode/decode
QR Code Studio
Encode text to QR and decode QR images
Numbers & Math
Security & Auth
SAML Decoder
Decode SAML requests and responses
Secret Scanner & Redactor
Scan and redact secrets in logs
Webhook Signature Verifier
Sign and verify webhook HMAC signatures
X.509 Certificate Inspector
Inspect certificates and fingerprints
Hash & HMAC Generator
SHA-256, SHA-512, HMAC, and hash verification
Automation & Scripting
Cron Expression Parser
Parse and simulate cron schedules
Regex Tester
Test regular expressions with highlighting
Unix Timestamp Converter
Convert between epoch and ISO-8601
URL Encoder / Decoder
Encode, decode, and parse URLs
Text Case Converter
Convert between snake_case, camelCase, kebab-case
UUID / ULID Studio
Generate, validate, normalize UUIDs and ULIDs
AI & Machine Learning
Why DevKit?
Built for developers who care about privacy and speed.
100% Offline
Your data never leaves your device. Every tool works without an internet connection.
Privacy First
No tracking, no analytics, no cloud. Your data stays yours, always.
Lightning Fast
Native iOS performance with instant results. No waiting for server responses.
Ready to supercharge your workflow?
Download DevKit and get 30+ developer tools in your pocket, for free.