Comparison

JavaScript Studio Pro vs Trade Calculator

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

Head to head
About

JavaScript Studio Pro

Develop web applications on your mobile device using JavaScript, CSS, and HTML. This tool offers error checking assistance as you code, ensuring you don't lose track of your ideas. Create and save your projects anywhere, anytime.

Highlights
  • Write JavaScript, CSS, HTML code
  • Create web applications
  • Error checking assistance
  • Save code and ideas
  • Mobile development environment
Features
Read full description

Use your JavaScript, CSS, html skills to create apps wherever you go. These days many of us we use a smartphone anytime, as a developers sometimes we write code using some text editor to save it, for this reason I developed JavaScript Studio app a smart app that works on your phone, With JavaScript Studio you can create web apps by writing JavaScript code, CSS, Html, Html5. Error Checking? Yes, JavaScript Studio will help on it while coding by inserting a simple comment text. Never Miss any code and idea again Use JavaScript Studio Pro. ARROWAT™ JavaScript Studio Pro.

About

Trade Calculator

This tool simplifies complex calculations for construction and HVAC professionals. It handles feet-inches-fractions arithmetic, trigonometric functions, and specialized trade calculations like rafters and duct sizing. Works offline without ads or subscriptions.

Highlights
  • Feet-inches-fractions arithmetic
  • Adjustable fraction precision
  • Scientific and trigonometric functions
  • Construction trade calculations
  • HVAC duct sizing (Imperial/SI)
  • Offline functionality
Features
Read full description

Trade Calculator is the essential tool for construction professionals, sheet metal workers, HVAC technicians, and anyone who works with feet, inches, and fractions every day. Built by tradespeople, for tradespeople — this app replaces the need to carry a separate construction calculator in the field. THREE POWERFUL SCREENS: SCREEN 1 — SCIENTIFIC CALCULATOR Full arithmetic with native feet-inches-fractions support. Enter dimensions in feet and inches, choose your fraction precision (1/16, 1/32, 1/64), and get accurate results without manual conversions. Includes trigonometric functions, memory registers, and a triangle solver for angles and sides. SCREEN 2 — TRADE FUNCTIONS Purpose-built construction math at your fingertips: hip and valley rafters, jack rafters, pipe and duct offsets, column and cone layouts, and pitch calculations — all with the same fraction-friendly number pad. SCREEN 3 — DUCT CALCULATOR HVAC duct sizing based on the ASHRAE equal friction method. Enter any two of air flow, friction loss, velocity, or duct diameter to instantly solve for the remaining values. Toggle between Imperial (CFM, FPM, in.wg) and SI (L/s, m/s, Pa/m) units. Equivalent rectangular duct sizes are calculated automatically. KEY FEATURES: • Native feet-inches-fractions arithmetic (no decimal conversions needed) • Adjustable fraction precision: 1/2 through 1/64 • Scientific functions: trig, arc trig, squares, square roots • Construction trade functions: hip/valley, jack rafters, offsets, columns • HVAC duct sizing with Imperial and SI support • Equivalent rectangular duct size table • Multiple memory registers • Triangle solver (side/angle calculations) • Clean, intuitive interface designed for job-site use • No internet connection required — works completely offline • No ads. No subscriptions. No data collection.

Screenshots

JavaScript Studio Pro4 screens
Trade Calculator4 screens

Verdict

The call

The clearest difference is price: Trade Calculator at Free against JavaScript Studio Pro's $12.99. JavaScript Studio Pro's advantage is iOS requirement (10.0 vs 18.0). On rating, ratings volume, 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

Trade Calculator is free to download; JavaScript Studio Pro costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for JavaScript Studio Pro against 5.0 for Trade Calculator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard3 real differences · 6 level
JavaScript Studio Pro versus Trade Calculator: the parameters behind the verdict, then further details
ParameterJavaScript Studio ProTrade Calculator
Price$12.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 20 months—
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better18.0
Further details — not scored
Size33 MB13 MB
Age rating4+4+
DeveloperArrowat LLCMatthew Lutterloh

Customer experience

JavaScript Studio Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Trade Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

JavaScript Studio Pro

No in-app purchases

None

Trade Calculator

No in-app purchases

Questions

Is JavaScript Studio Pro free?
JavaScript Studio Pro costs $12.99, with no in-app purchases.
Is Trade Calculator free?
Trade Calculator is free to download, with no in-app purchases.
Which has better reviews, JavaScript Studio Pro or Trade Calculator?
JavaScript Studio Pro and Trade Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do JavaScript Studio Pro or Trade Calculator have ads?
Neither JavaScript Studio Pro nor Trade Calculator shows ads.

Other comparisons