Comparison

Calculator vs T

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

Head to head
About

Calculator

A straightforward and visually appealing calculator designed for ease of use on iPads and other iOS devices. It offers a large keypad to prevent errors and operates silently, making it ideal for quiet environments.

Highlights
  • Simple and easy to use
  • Redesigned for iPad with large keypad
  • Feels like a real calculator
  • Silent operation
  • Intuitive interface
Features
Read full description

Simple, Easy and Stylish calculator for the iPad. Works on iPhone & iPod Touch too. Simple and Easy Designed specifically for iPad with simple and easy usability. Limiting the features to the minimum, anyone can use it intuitively without steep learning curve. Re-Designed for iPad Re-Designed for iPad for ease of use with attractive interface. With large keypad, you won’t make any typo anymore. Real and Fast Feels like using a real calculator. With streamlined usability, you can calculate much more in shorter time. Silent No keypad touch sound are made. Suitable for use in quiet place like library. Features * Simple & Easy. Limiting the features to minimum makes anyone can use it intuitively. * As real as a real calculator. * Redesigned for iPad. Large key pad, no typo. * Silent. No keypad touch sound. Suitable for use in quiet place.

About

T

This app offers a dual calculator interface, allowing side-by-side or stacked calculations. Easily transfer results between calculators with a single touch for complex computations. It displays formulas for clarity and allows copying results to your device's memory.

Highlights
  • Two calculators in one
  • Copy and paste results between calculators
  • Input results from one calculator to another
  • Formula display
  • Copy results to device memory
  • Supports basic arithmetic operations
Features
Read full description

A simple and easy-to-use calculator app that combines two calculators into one. Calculators are displayed side by side when the screen is horizontal, and vertically when the screen is vertical. In addition to being able to perform separate calculations with each calculator, calculation results can be also copy and paste with one touch, so you can perform other calculations during calculations, making it even more convenient to use than you might imagine. There is also a paid version without ads. Please try it first. https://apps.apple.com/jp/app/twin-calc/id1619292082 【feature】 1. Calculation results can be copy and paste between two calculators with one touch. 2. The result calculated can be input from one calculator to the other with one touch. ・When press the "→" key, the calculation result of the left calculator is entered at the end of the formula on the right calculator. ・When press the "←" key, the calculation result of the right calculator is entered at the end of the formula on the left calculator. 3. add, subtract, multiply and divide is performed. Do multiplication and division first, then add and subtract. 4. Display the formula The entered formula is displayed under the result, so you can easily check the operations. 5. Calculation results can be copied to iPhone’s memory Calculation results can be pasted into other apps as text , so transcription errors will not occur. Example of use When you find a product for 988 yen for 3 pieces and a product for 1245 yen for 4 pieces while shopping, you can easily calculate "Which is cheaper?" And “How cheaper?"with this calculator. 1) Use the left and right calculators to find the unit price of the product (unit price = product price/number). 2) Tap the "- key" and "arrow key" on either the left or right calculator to calculate the unit price difference. Limitations ・Answer can be calculated up to 9 digits, minimum 0.000000001.

Screenshots

Calculator4 screens
T4 screens

Verdict

The call

The clearest difference is rating: T at 5.0 against Calculator's 4.0. T also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 15 months). Calculator's advantage is review sentiment (60% vs 43%) and iOS requirement (8.0 vs 15.0). On price, ratings volume, ads and monetization model 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. Calculator sells 1 one-off in-app purchase. T asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

T holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews complicate that: 60% of Calculator's written reviews are positive against 43% of T's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Calculator ships an update every 15 months, T weekly. The most recent releases landed on October 12, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Calculator versus T: the parameters behind the verdict, then further details
ParameterCalculatorT
PriceFreeFree
Rating4.0 (2 ratings)5.0 (2 ratings) — better
Positive reviews60.0% of reviews — better42.9% of reviews
Number of ratings22
Update frequencyEvery 15 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size27 MB4 MB
Age rating4+4+
Developerhirokazu murabeHiroyuki Ueda

Customer experience

Calculator

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews5 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

T

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive42.9%
Neutral0.0%
Negative57.1%

In-app purchases

1 purchases

Calculator

One-time1
  • Do not show Advertisement$2.99
None

T

No in-app purchases

Questions

Is Calculator free?
Calculator is free to download, with in-app purchases available.
Is T free?
T is free to download, with no in-app purchases.
Which has better reviews, Calculator or T?
T is rated higher. Calculator averages 4.0 out of 5 from 2 ratings, while T averages 5.0 from 2 ratings.
Do Calculator or T have ads?
Neither Calculator nor T shows ads.
Which is updated more often, Calculator or T?
Calculator ships an update every 15 months, and T weekly. Most recently, Calculator was updated on October 12, 2026 and T on October 30, 2026.

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