Comparison

FastLabel vs Simple JavaScript

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

Head to head
About

FastLabel

Features
Read full description

FastLabel is the fastest way to label image datasets on your iPhone. Import a ZIP with images, define your labels, and start labeling instantly. Designed for speed and simplicity, FastLabel lets you go through large datasets quickly with a smooth, one-by-one workflow. Features: β€’ Import images from ZIP files (JPG, PNG, JPEG) β€’ Fast, focused labeling experience β€’ Simple label set creation β€’ Overview of all images in a grid β€’ Continue where you left off β€’ Export labels as JSON, CSV, or JSONL β€’ Optionally export images together with labels Perfect for: β€’ Machine learning datasets β€’ Computer vision projects β€’ AI training data preparation β€’ Quick annotation tasks on the go All data stays on your device. No accounts, no uploads, no tracking.

About

Simple JavaScript

Features
Read full description

β€œWant 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. β–  Features β€’ Intuitive Interface Simple tools should be easy to use. The editor is designed to be fast, responsive, and comfortable for everyday coding. β€’ Run Code Instantly Execute JavaScript code with a single tap. View output and error messages immediately. β€’ Code Auto Completion Built-in code completion helps you write code more efficiently. β€’ Code Formatting Automatically format your code to improve readability and maintain a clean coding style. β€’ Find and Replace Search and replace text within your code quickly and easily. β€’ Code Folding Collapse and expand code blocks to make large files easier to navigate. β€’ Easy Cursor Navigation Move the cursor using directional controls for more precise editing. β€’ Automatic Saving Your code is automatically saved while editing, so you never have to worry about losing changes. β€’ Ready to Use No account registration is required. Start coding immediately after installation. β€’ Export and Share Export and share your code with others. Useful for backups and editing on different devices. β€’ Dark Theme Support Supports dark mode for comfortable coding day and night.

Screenshots

FastLabel4 screens
Simple JavaScript4 screens

Verdict

The call

The clearest difference is in-app purchases: FastLabel at none against Simple JavaScript's 2. Simple JavaScript's advantage is update cadence (every 4 weeks vs every 4 months) and device support (4 vs 2). On price and ads there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Simple JavaScript sells 2 in-app purchases, starting at $1.99 per month. FastLabel asks for nothing beyond the download.

UpkeepUpdate frequency

FastLabel ships an update every 4 months, Simple JavaScript every 4 weeks. Both last shipped on November 5, 2026.

Scorecard4 real differences Β· 2 level
FastLabel versus Simple JavaScript: the parameters behind the verdict, then further details
ParameterFastLabelSimple JavaScript
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 weeks β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod, Mac β€” better
Requires iOS26.215.6 β€” better
Further details β€” not scored
Size7 MB70 MB
Age rating4+4+
DeveloperLukas Paul HeringYUKI TANAIKE

In-app purchases

None

FastLabel

No in-app purchases

2 purchases

Simple JavaScript

Subscriptions2
  • Simple JavaScript Pro (Monthly)$1.991 Month
  • Simple JavaScript Pro (Annual)$18.001 Year

Questions

Is FastLabel free?
FastLabel is free to download, with no in-app purchases.
Is Simple JavaScript free?
Simple JavaScript is free to download, with in-app purchases available.
Do FastLabel or Simple JavaScript have ads?
Neither FastLabel nor Simple JavaScript shows ads.
Which is updated more often, FastLabel or Simple JavaScript?
FastLabel ships an update every 4 months, and Simple JavaScript every 4 weeks. Most recently, FastLabel was updated on November 5, 2026 and Simple JavaScript on November 5, 2026.

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