Comparison

Thermals vs JavaScript Coding Editor & IDE

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

Head to head
About

Thermals

Monitor your device's thermal state and processor activity to diagnose performance issues. Understand why your phone might be running slowly, charging slowly, or have reduced brightness due to overheating. Export data for further analysis with other development tools.

Highlights
  • Displays device thermal state
  • Shows active processor count
  • Monitors device uptime
  • Troubleshoots performance issues
  • Helps diagnose slow charging
  • Identifies brightness limitations
  • Exports raw data for analysis
Features
Read full description

Phone running slowly, charging slowly or low brightness? See if your device is overheating using Thermals. Thermals displays your device’s thermal state, as well as how many processors are active on your device and its uptime, as reported by iOS. Thermals helps troubleshoot: • Poor performance — iOS reduces processor speed and potentially disables processors temporarily when the device is hot. • Slow charging — battery charging causes a lot of heat and iOS can limit charging speed to reduce the additional heat that might make a device too hot. • Low maximum brightness — if your device screen stays dark despite being on full brightness, it could be limited by iOS due to heat. • Manufacturing defects — if not all processors are active when the device is cool and not in low power mode. Your device's thermal state is monitored regularly in the background and recorded in the app (if Background App Refresh is enabled). Open the app or tap the widget to record a data point manually. Export the raw data to file for corroboration with Screen Time, Xcode's Instruments, or other development tools. Also an independent Apple Watch app shows the thermal status, active processors and uptime, and thermal history of your watch.

About

JavaScript Coding Editor & IDE

This app is a powerful offline IDE for JavaScript and TypeScript development. It features a built-in compiler, console, and DOM WebView, allowing you to write, run, and debug code anywhere. Enhance your skills with tutorials, coding challenges, and an AI assistant.

Highlights
  • Offline JavaScript and TypeScript execution
  • Built-in compiler and console
  • DOM WebView for web app development
  • AI assistant for code help
  • Syntax highlighting and code completion
  • Coding challenges and tutorials
  • Node.js runtime support
Features
Read full description

Run JavaScript and TypeScript on Node.js anywhere—100% Offline. The most powerful mobile IDE for JS and TS.  Features a built-in compiler, console, and DOM WebView. No server, no internet, no limits. Whether you are a professional developer, a student, or a hobbyist, JavaScript CodePad will help you practice and improve your coding skills anytime, anywhere. Built in tsc compiler transpiles your TypeScript code to JavaScript offline. Use the WebView mode to access the built-in Web Browser Window and DOM interface. Combine HTML, CSS, and JavaScript and learn building Web apps. Organise your code into modules and run multiple JS files using Node.js as a runtime (Internet connection required). You can run, execute, and evaluate JS code and programs from this app. Lightweight app with full JavaScript syntax highlighting, code completion and editor actions like undo, redo, comment lines, and indent selection to enhance your developer productivity. Enhanced productivity with live JS and TS code analysis as you type. Catch errors before you run the code. Built-in AI Assistant, whenever you get an error in your code, AI can suggest how to resolve it. AI Assistant can also refactor your code, clean it up, check it for bugs, write comments and documentation strings or just explain it. Blazing fast, all single script and Web View code is ran directly on the embedded node.js runtime or built in Web browser. Enhance your programming and JavaScript skills by solving built-in coding problems. Learn JavaScript with the MDN tutorial. Become a JavaScript coding master. Learn TypeScript with the official TypeScript handbook. Test your JavaScript and TypeScript knowledge, the app will tell you if you are writing valid JavaScript. With JavaScript CodePad, you can: - Write and execute JavaScript code with syntax highlighting and auto-indentation. - Run and compile TypeScript code and scripts - Test and debug your code with the built-in console and error messages. - Share and load your code snippets for later use - Customised keyboard with special keys and shortcuts for JavaScript and TypeScript - Code completion - Code formatting - Code linting - Solve built-in coding challenges - Access JavaScript and TypeScript tutorial and library reference from the app - Learn new concepts and techniques - Write HTML, CSS and JS code and run it in a built-in WebView - Run multiple JS files Download it today and unleash your creativity with the most popular programming language in the world. Note that certain features like Code completion, WebView mode and project mode require paid Developer upgrade.

Screenshots

Thermals4 screens
JavaScript Coding Editor & IDE4 screens

Verdict

The call

The clearest difference is review sentiment: Thermals at 83% against JavaScript Coding Editor & IDE's 42%. Thermals also leads on in-app purchases (none vs 6) and ads (none vs shown). JavaScript Coding Editor & IDE's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (97 vs 28). On price 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

Both are free to download. JavaScript Coding Editor & IDE sells 6 in-app purchases, starting at $11.99 per month. Thermals asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Thermals holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 28 and 97 respectively. Written reviews point the same way: 83% of Thermals's written reviews are positive against 42% of JavaScript Coding Editor & IDE's.

UpkeepUpdate frequency

Thermals ships an update every 3 months, JavaScript Coding Editor & IDE every 3 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

Scorecard9 real differences · 2 level
Thermals versus JavaScript Coding Editor & IDE: the parameters behind the verdict, then further details
ParameterThermalsJavaScript Coding Editor & IDE
PriceFreeFree
Rating4.5 (28 ratings) — better4.3 (97 ratings)
Positive reviews83.3% of reviews — better42.3% of reviews
Number of ratings2897 — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#134#31 — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS18.613.0 — better
Further details — not scored
Size3 MB188 MB
Age rating4+4+
DeveloperGeorge GarsideCloudbit d.o.o.

Customer experience

Thermals

All ratings28 ratings
Positive89.3%
Neutral3.6%
Negative7.1%
Written reviews30 reviews
Positive83.3%
Neutral6.7%
Negative10.0%

JavaScript Coding Editor & IDE

All ratings97 ratings
Positive79.4%
Neutral5.2%
Negative15.5%
Written reviews26 reviews
Positive42.3%
Neutral7.7%
Negative50.0%

In-app purchases

None

Thermals

No in-app purchases

6 purchases

JavaScript Coding Editor & IDE

Subscriptions2
  • Developer Upgrade Monthly3 Days trial$11.991 Month
  • Developer Upgrade Yearly1 Month trial$39.991 Year
One-time4
  • Remove Ads$6.99
  • Developer Upgrade Offer$9.99
  • Developer Upgrade$19.99
Show 1 more
  • Developer Lite$39.99

Questions

Is Thermals free?
Thermals is free to download, with no in-app purchases.
Is JavaScript Coding Editor & IDE free?
JavaScript Coding Editor & IDE is free to download, with in-app purchases available.
Which has better reviews, Thermals or JavaScript Coding Editor & IDE?
Thermals is rated higher. Thermals averages 4.5 out of 5 from 28 ratings, while JavaScript Coding Editor & IDE averages 4.3 from 97 ratings.
Do Thermals or JavaScript Coding Editor & IDE have ads?
JavaScript Coding Editor & IDE shows ads; Thermals does not.
Which is updated more often, Thermals or JavaScript Coding Editor & IDE?
Thermals ships an update every 3 months, and JavaScript Coding Editor & IDE every 3 weeks. Most recently, Thermals was updated on October 6, 2026 and JavaScript Coding Editor & IDE on October 7, 2026.
Which is more popular, Thermals or JavaScript Coding Editor & IDE?
Thermals currently peaks at #134 in the App Store charts, and JavaScript Coding Editor & IDE at #31. Chart position reflects recent download velocity rather than total install base.

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