Comparison

Simple JavaScript vs JSON DevKit Editor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Simple JavaScript

Features
Read full description

“Want to try code while you’re on the go?” This app is a simple JavaScript editor and runtime designed for smartphones. It provides a powerful code editor with syntax highlighting, allowing you to write and run JavaScript code instantly. It is suitable for everything from learning JavaScript to practical coding and testing. Common use cases include: * Learning JavaScript * Programming practice * Learning web development * Studying algorithms * Testing code snippets * Verifying sample code * Taking JavaScript notes * Creating scripts * Testing functions * Writing code for technical blogs * Training and workshops * Building prototypes * Managing code snippets * Experimenting with new ideas * Creating a simple testing environment during development JavaScript can be used in many different ways, and this app helps you quickly write, test, and manage your code. If you are looking for a JavaScript editor and runtime, give it a try. ■ Features • Intuitive Interface Simple tools should be easy to use. The editor is designed to be fast, responsive, and comfortable for everyday coding. • Run Code Instantly Execute JavaScript code with a single tap. View output and error messages immediately. • Code Auto Completion Built-in code completion helps you write code more efficiently. • Code Formatting Automatically format your code to improve readability and maintain a clean coding style. • Find and Replace Search and replace text within your code quickly and easily. • Code Folding Collapse and expand code blocks to make large files easier to navigate. • Easy Cursor Navigation Move the cursor using directional controls for more precise editing. • Automatic Saving Your code is automatically saved while editing, so you never have to worry about losing changes. • Ready to Use No account registration is required. Start coding immediately after installation. • Export and Share Export and share your code with others. Useful for backups and editing on different devices. • Dark Theme Support Supports dark mode for comfortable coding day and night.

About

JSON DevKit Editor

Features
Read full description

JSON DevKit is a JSON workbench for iPhone and iPad. View, edit, format, validate, convert, and compare JSON in one place—built for developers, QA engineers, and API testers who need fast answers on mobile. CORE WORKFLOW • Open JSON from the editor, clipboard, files, or a URL • Pretty-print or minify with syntax highlighting and line numbers • Explore structure in tree view or flatten nested data into a table • Run JSONPath queries and inspect matched results • Generate and validate JSON Schema • Compare two JSON documents with a synced side-by-side diff • Convert JSON to CSV, TSV, XML, YAML, TOML, TOON, Markdown table, HTML, or Base64 • Generate model stubs for Swift, Kotlin, TypeScript, Dart, Java, Python, and C# BUILT FOR REAL WORK • Multi-tab workbench keeps source and output snapshots as you switch tools • Large payloads are processed off the main thread with progress feedback • iPhone and iPad layouts adapt to your device—same tools, optimized navigation • Recent history helps you return to earlier documents quickly PRIVACY BY DESIGN • All JSON processing happens on your device • No account required to use core features • Firebase Analytics (Google) collects anonymous usage events only—no JSON content or ad identifiers • No ads, no subscriptions, and no in-app purchases. All tools are included. • Your data stays local unless you explicitly copy, share, or export it Whether you are debugging an API response, checking a config file, or converting JSON for a report, JSON DevKit keeps the workflow focused and fast.

Screenshots

Simple JavaScript4 screens
JSON DevKit Editor4 screens

Verdict

The call

The clearest difference is price: Simple JavaScript at Free against JSON DevKit Editor's $0.99. Simple JavaScript also leads on iOS requirement (15.6 vs 17.0). JSON DevKit Editor's advantage is in-app purchases (none vs 2) and update cadence (every 9 days vs monthly). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Simple JavaScript is free to download; JSON DevKit Editor costs $0.99 up front. Simple JavaScript sells 2 in-app purchases, starting at $1.99 per month. JSON DevKit Editor asks for nothing beyond the download.

UpkeepUpdate frequency

Simple JavaScript ships an update monthly, JSON DevKit Editor every 9 days. The most recent releases landed on September 21, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 2 level
Simple JavaScript versus JSON DevKit Editor: the parameters behind the verdict, then further details
ParameterSimple JavaScriptJSON DevKit Editor
PriceFree — better$0.99
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.6 — better17.0
Further details — not scored
Size54 MB5 MB
Age rating4+4+
DeveloperYUKI TANAIKEandy hu

In-app purchases

2 purchases

Simple JavaScript

Subscriptions2
  • Simple JavaScript Pro (Monthly)$1.991 Month
  • Simple JavaScript Pro (Annual)$18.001 Year
None

JSON DevKit Editor

No in-app purchases

Questions

Is Simple JavaScript free?
Simple JavaScript is free to download, with in-app purchases available.
Is JSON DevKit Editor free?
JSON DevKit Editor costs $0.99, with no in-app purchases.
Do Simple JavaScript or JSON DevKit Editor have ads?
Neither Simple JavaScript nor JSON DevKit Editor shows ads.
Which is updated more often, Simple JavaScript or JSON DevKit Editor?
Simple JavaScript ships an update monthly, and JSON DevKit Editor every 9 days. Most recently, Simple JavaScript was updated on September 21, 2026 and JSON DevKit Editor on October 2, 2026.

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