--- title: "DeltaPad - Dev Tools - Reviews, Revenue and Downloads in China | Apple App Store" description: "Paste. Tap. Done. DeltaPad puts 20 essential developer tools in your pocket — from JSON formatting to regex testing, password generation to markdown preview. Every tool produces results in under 100m" --- # DeltaPad - Dev Tools — China ![DeltaPad App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/34/72/1d/34721d45-10a6-01e2-6be3-25b7d3a1abcf/AppIcon-1x_U007epad-0-1-85-220-0.png/434x0w.png) **Developer:** [Olof Petterson](https://apptail.io/developer/olof-petterson-rPPdrb) **Category:** Developer Tools **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.olof.petterson.DeltaPad **Store:** Apple App Store **Country:** China **Version:** 2.0 (released 2026-03-19) **Original Release:** 2026-02-18 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/cn/app/app/id6759147374) **AppTail Page:** [https://apptail.io/app/deltapad-dev-tools-alKy/china](https://apptail.io/app/deltapad-dev-tools-alKy/china) ## DeltaPad Description Paste. Tap. Done. DeltaPad puts 20 essential developer tools in your pocket — from JSON formatting to regex testing, password generation to markdown preview. Every tool produces results in under 100ms. No server. No account. No waiting. 11 FREE TOOLS • JSON Formatter & Validator — syntax highlighting + tree view • Base64 Encode/Decode — URL-safe variant, auto-detect • URL Encode/Decode — component breakdown, query params • UUID Generator — bulk mode, format options, history • Timestamp Converter — Unix ↔ human-readable, timezone picker • Text Case Converter — camelCase, snake_case, UPPER + 6 more • Number Base Converter — DEC/HEX/BIN/OCT with prefix auto-detect • Lorem Ipsum Generator — 3 styles, paragraphs/sentences/words • String Escape/Unescape — JSON, XML, HTML, URL, CSV, regex • Byte Counter — UTF-8/UTF-16 sizes, per-character breakdown • Unix Permissions — symbolic ↔ numeric with interactive toggles 9 PRO TOOLS (one-time purchase) • JWT Decoder — color-coded header/payload/signature, expiry countdown • Regex Tester — live highlighting, capture groups, timeout protection • Hash Generator — MD5, SHA-1, SHA-256, SHA-512 simultaneously • Color Converter — HEX/RGB/HSL with SwiftUI, UIKit & CSS output • Diff Viewer — line-level and character-level highlighting • YAML ↔ JSON Converter — bidirectional with boolean coercion warnings • Password Generator — cryptographically secure, presets, entropy display • HMAC Generator — MD5/SHA1/SHA256/SHA512 with key encoding options • Markdown Preview — live split view, GitHub Flavored, HTML export DESIGNED FOR YOUR WORKFLOW • Clipboard Intelligence — auto-detects JSON, JWT, Base64, URL, YAML & more • Share Extension — share from any app, auto-routes to the right tool • Home Screen & Lock Screen Widgets — UUID, timestamp, quick tools • Deep Links — deltapad://tool/json?input=... for automation • iPad sidebar navigation with full keyboard shortcuts • State preservation — switch tools without losing input BUILT DIFFERENT • 100% offline — no data leaves your device • Sub-100ms response on every tool • Dark mode Tron Grid design • VoiceOver, Dynamic Type, Reduce Motion • One-time PRO purchase — no subscriptions, no ads Built by developers, for developers. ## DeltaPad Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d7/43/82/d74382d8-9bde-a5ed-9154-7ee70fe0a9e9/iPhone_17_Pro_Max-01-LaunchPad.png/1320x2868.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/40/39/e5/4039e5a6-b633-b440-a746-3d69c57eb6d4/iPhone_17_Pro_Max-02-JSONFormatter.png/1320x2868.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/95/6f/89/956f89e6-3b84-dbb9-97a5-01cb091e4154/iPhone_17_Pro_Max-03-ColorConverter.png/1320x2868.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/fc/25/02/fc250268-2fdc-25ef-5418-f240a9d379fe/iPhone_17_Pro_Max-04-PasswordGenerator.png/1320x2868.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d3/fd/fe/d3fdfe21-7d74-ae72-e5e9-bd9b50fc34b8/iPhone_17_Pro_Max-05-MarkdownPreview.png/1320x2868.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/cc/4d/fd/cc4dfdc5-3d34-f097-010f-12836fd48dc8/iPhone_17_Pro_Max-06-DiffViewer.png/1320x2868.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c7/e3/d4/c7e3d440-0bb9-5006-82f6-afb96840a8fd/iPhone_17_Pro_Max-07-UnixPermissions.png/1320x2868.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/72/a7/dd/72a7ddae-c2fd-ec99-723e-9aa7f9dbe916/iPhone_17_Pro_Max-08-RegexTester.png/1320x2868.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c4/81/7b/c4817b2b-6289-0711-602b-711fab2fe107/iPhone_17_Pro_Max-09-YAMLConverter.png/1320x2868.png) - [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/98/b9/15/98b915d2-c002-3440-3ea2-6d14b4ab3b2d/iPhone_17_Pro_Max-10-TextCase.png/1320x2868.png) ## DeltaPad In-App Purchases | Item | Price | |------|-------| | DeltaPad PRO | ¥38.00 | ## DeltaPad Available In - [Canada](https://apptail.io/app/deltapad-dev-tools-alKy/canada) - [China](https://apptail.io/app/deltapad-dev-tools-alKy/china) - [France](https://apptail.io/app/deltapad-dev-tools-alKy/france) - [Croatia](https://apptail.io/app/deltapad-dev-tools-alKy/croatia) - [Iceland](https://apptail.io/app/deltapad-dev-tools-alKy/iceland) - [North Macedonia](https://apptail.io/app/deltapad-dev-tools-alKy/north-macedonia) - [Poland](https://apptail.io/app/deltapad-dev-tools-alKy/poland) - [Portugal](https://apptail.io/app/deltapad-dev-tools-alKy/portugal) - [Slovakia](https://apptail.io/app/deltapad-dev-tools-alKy/slovakia) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*