# DevPocket: Developer Utilities — Offline Regex, JSON, API Tools

> Offline Regex, JSON, API Tools (iPhone/iPad app by SEUNGHYUN LEE.)

- Source: https://appshunter.io/ios/app/devpocket-developer-utilities/id6760736317 (this page in markdown: same URL + `.md`)
- Developer: [SEUNGHYUN LEE](https://appshunter.io/developer/1872011705)
- Category: Utilities, Developer Tools
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 10 MB
- Languages: English, Japanese, Korean
- Released: 2026-03-23
- Data updated: 2026-06-27
- User reviews in markdown: https://appshunter.io/ios/app/devpocket-developer-utilities/id6760736317/reviews.md

## What is DevPocket?

DevPocket is your all-in-one utility app designed specifically for developers. Featuring 15 powerful tools, almost everything works completely offline (except the API client). Verify, format, and test your code quickly, even when you're on the go and can't open your laptop.

[ Core Features ]

*Regex (Regular Expressions)

Real-time regex testing with syntax highlighting

Detailed Capture Groups viewing

*JSON Tools

JSON validation, formatting, and minification

Interactive Tree View for complex data

*API Client (Requires internet)

Lightweight HTTP client for REST API testing

Quick cURL command import

Request history for fast re-testing

*12 Handy Utilities

Base64 Encoder / Decoder

URL Encoder / Decoder

JWT Decoder

UUID Generator

Lorem Ipsum Generator

QR Code Generator

Hash Generator (MD5, SHA, etc.)

Color Converter (HEX, RGB, etc.)

Base Converter

Unix Timestamp Converter

String Case Converter (CamelCase, snake_case, etc.)

Text Diff Viewer

[ Highlights ]

Fully offline capable (excluding API tester)

Optimized for both Light and Dark modes

Ad-supported with a one-time $1.99 IAP to remove ads

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads (Premium) | $1.99 | one-time |



## Version history (last 3 releases)

### 1.3 — 2026-06-13

- Add 3 new tools: Password Generator, Text Tools (sort, dedupe, count), Text Escape
- Add feedback / bug report email
- Improve Regex options layout
- Minor bug fixes and stability improvements

### 1.2 — 2026-04-18

New tools: HTTP Status Codes, HTML Entity, Cron Parser, and Unix Permission Calculator
Improvements: Regex Replace and 10 preset patterns, JSONPath queries, API request cancelation, history search, and large response warnings
Fixes and polish: Diff comparison issues, color converter sync issues, improved cURL import handling, plus UI and localization updates

### 1.0 — 2026-03-23

No release notes.

## More apps by SEUNGHYUN LEE

- [CardSnap: Card Manager](https://appshunter.io/ios/app/cardsnap-card-manager/id6758291321)
- [RoutineSnap: Habit Tracker](https://appshunter.io/ios/app/routinesnap-habit-tracker/id6758333502)
- [로또스냅 - 로또 AI 추천 및 당첨 번호 확인](https://appshunter.io/ios/app/ai/id6758654123)
- [LittleLog: Easy Baby Tracker](https://appshunter.io/ios/app/littlelog-easy-baby-tracker/id6758931925)
- [Spoiler: Daily Reflection](https://appshunter.io/ios/app/spoiler-daily-reflection/id6759438208)
- [MuteTimer: Deep Work & Focus](https://appshunter.io/ios/app/mutetimer-deep-work-and-focus/id6759640418)

All apps by SEUNGHYUN LEE: https://appshunter.io/developer/1872011705

## Related topics

[developer utilities](https://appshunter.io/ios/topics/developer-utilities)

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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 2026-06-27.*