Comparison

Eleven | Calculator vs Calculator ×

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

Head to head
About

Eleven | Calculator

This app offers a real-time calculation experience without an equals button, allowing you to see and edit your entire equation. It supports long calculations, unlimited undo/redo, and intelligent buttons for a streamlined user interface. Advanced scientific functions are available as an in-app purchase.

Highlights
  • Real-time calculation without equals button
  • Editable entire calculation history
  • Unlimited undo and redo
  • Intelligent and context-aware buttons
  • Supports basic and advanced operations
  • Scientific calculator functions (in-app purchase)
Features
Read full description

The BEST everyday calculator app for iPhone and iPad. - No equals button: Always automatically calculates the result in real-time while you type - No confusion: You can always see AND edit your entire calculation - Enter calculations of (almost) any length: The display and keypad automatically resize to fit - Tap or slide across the display to edit your calculation at any position - Unlimited Undo and Redo - More readable: Uses color to distinguish between numbers and operators - Intelligent buttons: Only those buttons light up which are relevant at any given time and cursor position - Gorgeous analog-style design - Four themes / skins included - Extremely fast. - Supports all basic operations: + - × ÷ √ - Supports advanced operations: ∛ x² x³ - Supports brackets ( ) - Supports results up to +/- 10³⁰⁰ - Long-tap the result to copy it to the clipboard SCIENTIFIC CALCULATOR! (landscape orientation, available as In-App Purchase) - Power function with fully editable exponent. - Root function with fully editable degree. - Logarithm function with fully editable base. - Trigonometric functions: sin, cos, tan. - Inverse trigonometric functions: asin, acos, atan. - Hyperbolic functions: sinh, cosh, tanh. - Inverse hyperbolic functions: asinh, acosh, atanh. - Factorial function (integers only). - Modulo (remainder) operator (mod). - Smart constants: π, e. - Smart random number generator. - No mode switching -- all functions immediately available.

About

Calculator ×

This app redefines the calculator experience for touch-screen devices with a modern, intuitive design. It offers features like a tape log for storing calculations, formula evaluation, and iPad multitasking support for enhanced productivity.

Highlights
  • Tape Log for calculation history
  • Reuse, copy, and share calculations
  • Evaluate entire formulas at once
  • iPad multitasking support
  • Modern touch-screen design
Features
Read full description

Designed exclusively for today's touch-screen devices, this calculator app represents a groundbreaking paradigm shift, leaving behind the outdated design patterns of mechanical calculators. We have meticulously crafted a new design from scratch, keeping modern touch-screen devices at the forefront of our innovation. • Tape Log: All your calculations are securely stored in the tape log, ensuring you never lose track of your numerical journey. • Calculation Management: Effortlessly reuse, copy, or share calculations to integrate them seamlessly into your work or daily life. • Formula Evaluation: Enter entire formulas in one line for swift and accurate evaluation, simplifying complex calculations. • iPad Multitasking: Experience true productivity with iPad multitasking support, enabling you to perform calculations while using other apps through Slide Over and Split View. Calculator Pro represents a powerful departure from traditional calculators, offering a tailored experience for touch-screen devices. Download now and embrace a new era of calculations with maximum control and power at your fingertips. Terms of Use: https://doubleuapp.com/privacy/terms.html

Screenshots

Eleven | Calculator4 screens
Calculator ×4 screens

Verdict

The call

The clearest difference is ads: Eleven | Calculator at none against Calculator ×'s shown. Eleven | Calculator also leads on rating (5.0 vs 4.5) and iOS requirement (11.4 vs 15.0). Calculator ×'s advantage is ratings volume (143 vs 3) and update cadence (every 2 months vs every 8 months). On price, in-app purchases, monetization model 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. Eleven | Calculator sells 1 one-off in-app purchase and Calculator × sells 4 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Eleven | Calculator holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Calculator × has 143 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Eleven | Calculator ships an update every 8 months, Calculator × every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard5 real differences · 5 level
Eleven | Calculator versus Calculator ×: the parameters behind the verdict, then further details
ParameterEleven | CalculatorCalculator ×
PriceFreeFree
Rating5.0 (3 ratings) — better4.5 (143 ratings)
Positive reviews—73.3% of reviews
Number of ratings3143 — better
Update frequencyEvery 8 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.4 — better15.0
Further details — not scored
Size2 MB17 MB
Age rating4+4+
DeveloperAlexander EweringDOUBLE U s.r.o.

Customer experience

Eleven | Calculator

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Calculator ×

All ratings143 ratings
Positive89.5%
Neutral4.2%
Negative6.3%
Written reviews15 reviews
Positive73.3%
Neutral6.7%
Negative20.0%

In-app purchases

1 purchases

Eleven | Calculator

One-time1
  • Scientific Calculator$0.99
4 purchases

Calculator ×

Subscriptions1
  • Premium Yearly$4.991 Year
One-time3
  • Remove ads$4.99
  • Remove ads$7.99
  • Remove ads$11.99

Questions

Is Eleven | Calculator free?
Eleven | Calculator is free to download, with in-app purchases available.
Is Calculator × free?
Calculator × is free to download, with in-app purchases available.
Which has better reviews, Eleven | Calculator or Calculator ×?
Eleven | Calculator is rated higher. Eleven | Calculator averages 5.0 out of 5 from 3 ratings, while Calculator × averages 4.5 from 143 ratings.
Do Eleven | Calculator or Calculator × have ads?
Calculator × shows ads; Eleven | Calculator does not.
Which is updated more often, Eleven | Calculator or Calculator ×?
Eleven | Calculator ships an update every 8 months, and Calculator × every 2 months. Most recently, Eleven | Calculator was updated on November 1, 2026 and Calculator × on November 2, 2026.

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