Comparison

Binary Brain vs JS.Notebook

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

Head to head
About

Binary Brain

Features
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This is an arbitrary-precision binary calculator for iOS and watchOS. It can add, subtract, multiply, or divide two or more binary numbers. It can operate on very large integers and very small fractional values. This calculator is, by design, very simple. You can use it to explore binary numbers in their most basic form. It operates on binary numbers (positive and negative). Although designed to be simple, it is an excellent educational tool as well. It keeps track of the calculation in order to let the user verify the calculation. It converts automatically and in real time the latest number in decimal and hexadecimal format. It also converts the latest number in IEEE 754 binary32 (Single-precision floating-point format) format (not available in watchOS version). This calculator is able to calculate bitwise AND, OR, NAND, NOR, XOR and XNOR operations. Moreover, it is possible to perform bit shift operations (not available in watchOS version).

About

JS.Notebook

Build, test, and run your JavaScript code directly on your iOS device. This utility allows you to execute scripts in widgets and even use your device as a host for computer browser code execution.

Highlights
  • Build JavaScript code
  • Test code at runtime
  • Run code in widgets
  • Use device as code host
  • Code execution in computer browser
Features
Read full description

JS Notebook provides a creative way for you to build and try out your Javascript. - Build, test, and check your code at runtime. - Easily run your code in Widgets - Read code in computer browse, make the iOS device to be a host.

Screenshots

Binary Brain4 screens
JS.Notebook4 screens

Verdict

The call

The clearest difference is price: JS.Notebook at Free against Binary Brain's $0.99. On update cadence, ads, in-app purchases 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

JS.Notebook is free to download; Binary Brain costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Binary Brain ships an update every 38 months, JS.Notebook every 50 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

Scorecard1 real difference · 8 level
Binary Brain versus JS.Notebook: the parameters behind the verdict, then further details
ParameterBinary BrainJS.Notebook
Price$0.99Free — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 38 months — betterEvery 50 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS13.0 — better14.0
Further details — not scored
Size6 MB19 MB
Age rating4+4+
DeveloperGeorge ChalkiadoudisZijie Deng

In-app purchases

None

Binary Brain

No in-app purchases

None

JS.Notebook

No in-app purchases

Questions

Is Binary Brain free?
Binary Brain costs $0.99, with no in-app purchases.
Is JS.Notebook free?
JS.Notebook is free to download, with no in-app purchases.
Do Binary Brain or JS.Notebook have ads?
Neither Binary Brain nor JS.Notebook shows ads.
Which is updated more often, Binary Brain or JS.Notebook?
Binary Brain ships an update every 38 months, and JS.Notebook every 50 months. Most recently, Binary Brain was updated on September 21, 2026 and JS.Notebook on September 17, 2026.

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