# Dev Tools Kit — JSON, Base64, hash, JWT & more

> JSON, Base64, hash, JWT & more (iPhone/iPad app by Kevin Cabon.)

- Source: https://appshunter.io/ios/app/dev-tools-kit/id6759492959 (this page in markdown: same URL + `.md`)
- Developer: [Kevin Cabon](https://appshunter.io/developer/1064904123)
- Category: Developer Tools
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 17.6 · 2 MB
- Languages: English, French
- Released: 2026-03-28
- Data updated: 2026-08-05
- User reviews in markdown: https://appshunter.io/ios/app/dev-tools-kit/id6759492959/reviews.md

## What is Dev Tools Kit?

Dev Tools Kit is a handy toolbox for developers.

Stop jumping between websites to format JSON, decode Base64 or test a regex. Keep a clean set of offline tools right on your iPhone.

---------------------------------------------------
FREE TOOLS
---------------------------------------------------
• JSON Formatter – Pretty-print or minify JSON.
• Base64 – Encode and decode strings.
• UUID Generator – Generate random UUID v4.
• String Case – Convert text to camelCase, snake_case, kebab-case, Title Case, and more.
• Number Base – Convert between binary, octal, decimal and hex.
• HTML Encoder – Encode and decode HTML entities.
• Password Generator – Generate secure random passwords.
• Chmod Calculator – Build Unix permission strings with a visual editor.
• QR Code Generator – Turn any text or URL into a QR code.
• Text Statistics – Count characters, words, sentences, reading time, and more.

---------------------------------------------------
PRO TOOLS (one-time purchase)
---------------------------------------------------
• Regex Tester – Test and debug regular expressions on sample text.
• URL Encoder – Encode / decode URLs.
• Timestamp – Convert timestamps to readable dates and back, in any timezone.
• Hash Generator – Compute MD5, SHA-1 and SHA-256.
• JWT Decoder – Inspect JSON Web Tokens in a readable format.
• Text Diff – Compare two texts line by line, or word by word.
• Color Converter – Convert colors between HEX, RGB, HSL and Swift Color(…).
• Lorem Ipsum – Generate placeholder text by words, sentences or paragraphs.
• CRON Parser / Builder – Read and compose CRON expressions with a visual editor.
• CSV ↔ JSON – Convert between CSV and JSON formats.

---------------------------------------------------
DESIGNED FOR DEVELOPERS
---------------------------------------------------
• Search, pin favorites, and reorder tools to fit your workflow.
• Share text from any app directly into a tool via the Share Extension.
• Clean, fast interface — inputs are remembered between sessions.
• 100% offline — nothing is sent to any server.
• One-time purchase, no subscriptions.
• Future Pro tools included in the price.

Dev Tools Kit is the small utility app you open dozens of times a week while coding, debugging or reviewing data.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Dev Tools Kit Pro | $6.99 | one-time |


## Chart rankings

- #197 in Top Grossing · Developer Tools (US App Store)


## Version history (last 2 releases)

### 0.2 — 2026-04-02

Version 0.2 — Major update

New tools:
• HTML Encoder – Encode and decode HTML entities.
• Password Generator – Configurable length, uppercase, digits, symbols.
• CRON Parser / Builder (Pro) – Read and visually compose CRON expressions.
• Chmod Calculator – Toggle r/w/x bits and get the octal instantly.
• QR Code Generator – Any text or URL, shareable directly.
• Text Statistics – Characters, words, reading time, and more.
• CSV ↔ JSON (Pro) – Bidirectional conversion between CSV and JSON.

New features:
• Favorites — Star any tool to pin it at the top of the list.
• Search bar — Filter tools by name from the home screen.
• Recents — Your last used tools appear at the top for quick access.
• Spotlight Search — Open any tool directly from iOS Search.
• Share Extension — Share text or URLs from any app into a tool.
• Drag & drop — Drop text directly into any input field.
• Input history — Last input is remembered across sessions for all tools.

Tool improvements:
• Color Converter — Now outputs HSL and Swift Color(…); Copy copies all formats at once.
• Timestamp — Timezone selector with 25 popular zones.
• Text Diff — New word-by-word diff mode.
• Regex Tester — Match list is no longer capped at 50.
• Haptic feedback — Subtle tap on every action button across all tools.

### 0.1 — 2026-03-28

No release notes.

## More apps by Kevin Cabon

- [Smily Jump](https://appshunter.io/ios/app/smily-jump/id1064904124)
- [Sublio](https://appshunter.io/ios/app/sublio/id6761324170)

All apps by Kevin Cabon: https://appshunter.io/developer/1064904123

## Related topics

[dev tools kit](https://appshunter.io/ios/topics/dev-tools-kit)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-05.*