Comparison

JSBox vs Pocket Assembler

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

Head to head
About

JSBox

This app is a mobile JavaScript IDE that allows users to learn and write JavaScript code. It provides tools to create native iOS utilities, widgets, extensions, and more, catering to both beginners and experienced developers.

Highlights
  • Mobile JavaScript IDE
  • Create native iOS utilities
  • Design widgets and keyboards
  • Siri/Shortcuts integration
  • Beautiful code editor
  • Advanced development tools
  • iOS extension support
Features
Read full description

* JSBox is featured by: sspai.com, Price Tag, AppSolution etc # What's JSBox? JSBox is an Integrated Development Environment for JavaScript. You can learn to code JavaScript here, as we provide tons of utilities to enhance the development experience. JSBox is amazing for both beginners and experienced engineers. Don't you wanna try it out? Don't hesitate to create cool stuff—do it now! # What can JSBox do? Of course you can write JavaScript, but the most important thing is that you can create native iOS utilities, such as: - Upload photos you have just taken to the server - Create a widget to check bus information - Schedule tasks by leveraging date-based or location-based notifications - Design an extension for the Photos app to search photos directly - Design your own widget and keyboard - Make a real-time tool to query the exchange rate - Collect your most important contacts and handle it on the widget There are many possibilities; we believe you can create coolest stuff. # What's in JSBox? JSBox is not only a full-fledged environment for standard JavaScript, but also provides many utilities: - A safe environment to run JavaScript natively with incredible performance - A beautiful editor to write JavaScript, multiple themes, auto-completion, and snippets... - Many advanced development tools: lint, prettier, diff viewer and database viewer... - A desktop extension to write code extremely fast and comfortable - Almost all the cool tech in iOS: Siri/Shortcuts, Today Widget, Action Extension, 3D Touch, Home Screen Shortcut... - A lot of awesome examples for beginner We are still working on it and will introduce cooler features in the future. # Terms of Use https://jsboxbbs.com/d/1035-terms-of-service # Privacy Policy https://jsboxbbs.com/d/1034-privacy-policy # Contact us! Please contact us in the following ways. Don't hesitate to report any issues. Thank you! - [Community](https://en.jsboxbbs.com) - [Email](mailto:log.e@qq.com) - [Twitter](https://twitter.com/cyanapps) - [Weibo](https://weibo.com/0x00eeee)

About

Pocket Assembler

Learn assembly programming on your mobile device with a streamlined interface. It offers free coding challenges and documentation, with an optional Pro upgrade for advanced features and more complex projects.

Highlights
  • Learn assembly programming
  • Free coding mode
  • 28 coding challenges
  • Comprehensive documentation
  • Customizable editor themes
  • Advanced instructions (Pro)
  • Custom execution speed (Pro)
Features
Read full description

Dive into the world of assembly programming, right from your iPhone or iPad! Pocket Assembler empowers you to write, explore, and enjoy low-level programming in a beautifully streamlined interface, perfect for beginners and seasoned developers alike. Start with free coding mode to unleash your creativity, or test your skills with 45 carefully crafted challenges that will guide you through more complex, real-world coding tasks. ▶ Free and feature-rich: - Learn at your own pace with 9 introductory challenges, walking you through the fundamentals of assembly language programming. - Comprehensive documentation and coding tips, so you can understand each operation and optimize your code with ease. - Personalized coding experience with customizable editor themes and text size. ▶ Unlock More with Pocket Assembler Pro Upgrade to Pocket Assembler Pro and elevate your coding journey: - 36 extra challenges – Push your skills with advanced challenges that unlock new ways of thinking. - Advanced instructions – Access upgraded commands like CMOV, XOR, XCHG, and ROL for deeper control. - Custom execution speed and logging controls – Step through execution more slowly, or tailor log outputs to fit your style. - Expanded instruction limit – Move from 1,000 instructions per program to a massive 10,000, perfect for building bigger, more complex projects. You can choose to subscribe to Pocket Assembler Pro for $7.99 annually, renewing every year until cancelled. You can also buy lifetime access for a one-time purchase of $19.99. ▶ Get started now! Ready to code like it’s 1975? Pocket Assembler brings the power of assembly to your pocket, with all the tools you need to program, learn, and excel. Download now and start coding like a pro! Terms of service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy policy: https://www.hudson.uk/privacy

Screenshots

JSBox4 screens
Pocket Assembler4 screens

Verdict

The call

The clearest difference is rating: Pocket Assembler at 5.0 against JSBox's 4.0. Pocket Assembler also leads on review sentiment (92% vs 50%). JSBox's advantage is ratings volume (85 vs 9) and iOS requirement (14.0 vs 26.0). On price, update cadence, ads and in-app purchases 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. JSBox sells 2 in-app purchases, starting at $7.99 per year and Pocket Assembler sells 2 in-app purchases, starting at $7.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Pocket Assembler holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: JSBox has 85 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 50% of JSBox's written reviews are positive against 92% of Pocket Assembler's.

UpkeepUpdate frequency

JSBox ships an update fortnightly, Pocket Assembler every 9 days. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
JSBox versus Pocket Assembler: the parameters behind the verdict, then further details
ParameterJSBoxPocket Assembler
PriceFreeFree
Rating4.0 (85 ratings)5.0 (9 ratings) — better
Positive reviews49.5% of reviews91.7% of reviews — better
Number of ratings85 — better9
Update frequencyFortnightlyEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better26.0
Further details — not scored
Size178 MB5 MB
Age rating4+4+
Developer颖 钟Hudson Heavy Industries

Customer experience

JSBox

All ratings85 ratings
Positive74.1%
Neutral1.2%
Negative24.7%
Written reviews107 reviews
Positive49.5%
Neutral3.7%
Negative46.7%

Pocket Assembler

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews12 reviews
Positive91.7%
Neutral8.3%
Negative0.0%

In-app purchases

2 purchases

JSBox

Subscriptions2
  • JSBox Pro$7.991 Year
  • JSBox Pro - Discount$7.991 Year
2 purchases

Pocket Assembler

Subscriptions1
  • Pro Annual$7.991 Year
One-time1
  • Pro Lifetime$19.99

Questions

Is JSBox free?
JSBox is free to download, with in-app purchases available.
Is Pocket Assembler free?
Pocket Assembler is free to download, with in-app purchases available.
Which has better reviews, JSBox or Pocket Assembler?
Pocket Assembler is rated higher. JSBox averages 4.0 out of 5 from 85 ratings, while Pocket Assembler averages 5.0 from 9 ratings.
Do JSBox or Pocket Assembler have ads?
Neither JSBox nor Pocket Assembler shows ads.
Which is updated more often, JSBox or Pocket Assembler?
JSBox ships an update fortnightly, and Pocket Assembler every 9 days. Most recently, JSBox was updated on October 11, 2026 and Pocket Assembler on October 9, 2026.

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