# Developer Pocket — 29 offline developer tools

> Offline developer toolbox with 29 utilities for JSON, data conversion, and code generation. (iPhone/iPad app by Valliappan Thenappan.)

- Source: https://appshunter.io/ios/app/developer-pocket/id6809017978 (this page in markdown: same URL + `.md`)
- Developer: [Valliappan Thenappan](https://appshunter.io/developer/6788616145)
- Category: Developer Tools, Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 26.0 · 2 MB
- Languages: American English
- Released: 2026-09-16
- Data updated: 2026-10-08
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/developer-pocket/id6809017978/reviews.md

## What is Developer Pocket?

Developer Pocket is a fast, native toolbox for the utilities you reach for
every day — completely free, no ads, no account, no internet connection
required.

TOOLS INCLUDED
• JSON Formatter — pretty-print, minify, and validate with precise error locations
• JSON Diff — compare two JSON documents and see what changed
• JSON Merge — deep-merge two documents (RFC 7386)
• JSON Patch — apply RFC 6902 add/remove/replace/move/copy/test operations
• JSONPath Tester — query JSON with $.user.roles[0]-style paths
• JSON Schema Validator — validate an instance against a JSON Schema
• JSON Repair — fix trailing commas, single quotes, unquoted keys, and more
• JSON Flatten/Unflatten — dot-notation flatten and reverse
• JSON Lines — convert between a JSON array and JSON Lines
• JSON Escape/Unescape — escape text for embedding, or unescape it back
• YAML Converter — JSON ↔ YAML
• CSV Converter — JSON ↔ CSV
• JSON to TypeScript — infer TypeScript interfaces from a JSON sample
• JSON to Swift — infer Codable structs from a JSON sample
• JSON to Go — infer Go structs with JSON tags
• JSON to Python — infer Pydantic models
• JSON to Kotlin — infer kotlinx.serialization data classes
• JSON to SQL — infer a CREATE TABLE and INSERT statements
• JSON to Markdown — render as a Markdown table
• JWT Decoder — inspect header, claims, and expiry at a glance
• JWK Viewer — inspect a JSON Web Key or key set
• Base64 Encoder/Decoder — text and URL-safe variants
• URL Encoder/Decoder — component or full-URL modes, with query parameter breakdown
• UUID Generator — bulk generate v4 UUIDs, upper/lowercase, with or without hyphens
• Unix Timestamp Converter — live clock plus both-direction conversion with timezone support
• Hash Generator — MD5, SHA-1, SHA-256, and SHA-512 digests
• Regex Tester — live match highlighting and capture groups
• Color Converter — HEX, RGB, and HSL, both directions
• QR Code Generator & Scanner — create codes or scan them with your camera

PRIVATE BY DESIGN
Every tool runs entirely on your device. Nothing you type, paste, or scan is
ever sent anywhere — Developer Pocket doesn't have a server to send it to.

FREE, NO CATCH
All twenty-nine tools, unlocked, forever. No subscription, no paywall, no ads.

Built natively for iOS with a modern, glass-inspired interface.

## Key features

- JSON formatting, minifying, and validation
- JSON comparison and merging
- Code generation for TypeScript, Swift, Go, Python, Kotlin
- Data format conversion (YAML, CSV)
- JWT and JWK inspection
- Base64 and URL encoding/decoding
- Regex testing and QR code generation/scanning


## Frequently asked questions about Developer Pocket

### Does Developer Pocket have ads?

No, Developer Pocket is completely free with no ads. The app explicitly states it has no advertisements and runs entirely offline.

### What kind of JSON tools does Developer Pocket offer?

Developer Pocket includes a wide array of JSON tools such as formatting, minifying, validating, diffing, merging, patching, querying with JSONPath, and repairing invalid JSON.

### Can Developer Pocket generate code from JSON?

Yes, Developer Pocket can infer and generate code structures from JSON samples for languages like TypeScript, Swift, Go, Python, and Kotlin.

### Is Developer Pocket available on Android?

The provided data indicates Developer Pocket is built natively for iOS and supports iPhone and iPad. Information regarding Android availability is not present.

### How often is Developer Pocket updated?

The latest version, 1.0, was released on 2026-09-16, and the last update was also on 2026-09-16. This suggests a recent initial release with no subsequent updates listed yet.

### What is the pricing for Developer Pocket?

Developer Pocket is completely free to use. There are no subscriptions, paywalls, or in-app purchases required to access any of its 29 tools.

### Does Developer Pocket require an internet connection?

No, Developer Pocket is designed to run entirely offline. All tools operate on your device, ensuring privacy and accessibility without an internet connection.

### What is the age rating for Developer Pocket?

Developer Pocket has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

## Version history (last 1 release)

### 1.0 — 2026-09-16

No release notes.

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| [Git client - Working Copy](https://appshunter.io/ios/app/git-client-working-copy/id896694807) | 4.8 (3,757) | Free | Developer Tools |
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## More apps by Valliappan Thenappan

- [Sweep - Clean Screenshots](https://appshunter.io/ios/app/sweep-clean-screenshots/id6788616142)

All apps by Valliappan Thenappan: https://appshunter.io/developer/6788616145

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*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 2026-10-08.*