Comparison

Calculator vs BIG CALCULATOR.

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

Head to head
About

Calculator

This app offers both basic and scientific calculators for quick solutions to mathematical expressions. It also features a "Math Notes" function that allows users to type or write out equations and see them solved inline, with support for variables and graphing.

Highlights
  • Basic and scientific calculators
  • Type or write math expressions
  • Inline equation solving
  • Variable creation and use
  • Equation graphing
  • Unit and currency conversion
  • Calculation history
Features
Read full description

Calculator Easily type out math with the basic and scientific calculators for quick solutions. With the Math Notes calculator, solving expressions, creating and using variables, and even plotting equations on graphs is as simple as typing or writing them out. Basic & Scientific Calculators Type complete expressions with parentheses, and basic and scientific operations before hitting equal for the final answer. With history, you can keep track of previous calculations, and easily copy or switch back to previous results. Unit Conversion Unit conversions in the basic and scientific calculators help you quickly convert between hundreds of units including length, speed, temperature, weight and more. You can even get up-to-date conversions for currencies from around the world. Math Notes Type math or write it out using Apple Pencil on iPad, and Math Notes will solve your expressions inline as soon as you add an equal sign. Math Notes supports all the same functions as the basic and scientific calculators, unit conversions and even math written vertically. Variables Create variables by typing or writing their name, an equals sign and then their value. Name them with letters or words. Tap on a variable’s value to easily adjust the value up or down. And use your variables in expressions, and even graphed equations across a Math Note. Graphing Type or write an equation, and with a tap you can graph it in Math Notes. Zoom, pan around, or resize your graph to get it just right. You can even add multiple equations on the same graph to see how they’re related.

About

BIG CALCULATOR.

This utility app offers a straightforward and visually clear calculator experience, ideal for users of all ages. Its large numbers and dark interface enhance readability, while landscape mode support on iPhones and iPads provides added convenience.

Highlights
  • Large numbers for easy viewing
  • Simple and easy-to-see interface
  • Landscape mode support
  • Dark UI for eye comfort
  • Suitable for all ages
Features
Read full description

A calculator you can actually see — and now hear. Big Calculator does four things — add, subtract, multiply and divide — with keys and digits large enough to read and to hit first time. Nothing else is on the screen. It was built for people who find the calculator that came with their phone too small: for cataracts, glaucoma and macular degeneration, and for anyone whose eyes are simply not what they were. BIG WHERE IT COUNTS • Keys that fill the screen, with room between them • A readout in large, heavy type — no thin, faint numbers • Hide the memory keys and every remaining button grows • Long sums stay readable, grouped the way your country writes them • Portrait or landscape, on iPhone and iPad IT READS THE ANSWER OUT LOUD Turn on VoiceOver and Big Calculator speaks each result the moment it is worked out, so you never have to hunt across the screen for the answer. • Every key says what it is — "Add", "Equals", "Memory add" — not "plus sign" • Divide by zero and it says so, in words • Switch the speaking off in Settings if you would rather it stayed quiet Most calculators leave a blind user to explore the screen and guess. This one tells you. THREE LOOKS — PICK WHAT SUITS YOUR EYES • Warm Paper — dark type on a bright, warm background. Easiest to read for most people. • Night — white on black at high contrast, for eyes that find bright screens painful. • Classic — the original look, with bolder type. The whole app repaints the moment you choose, so you see the difference before you commit. A DESK CALCULATOR ON YOUR PHONE • M+, M− and MRC memory keys, where you expect them • AC clears everything, C clears just the entry • A key press you can hear — or silence it in Settings IN YOUR LANGUAGE, WITH YOUR NUMBERS Available in 33 languages. The decimal point and the thousands separator follow your own country's convention, so the number on screen is written the way you write it — 1,234.56 or 1.234,56 or 1 234,56, whichever is yours. NOTHING ELSE No account. No sign-in. No cloud. Nothing to learn. Your sums stay on your phone. Big Calculator is free, supported by a single banner advert at the bottom of the screen. SUBSCRIPTION Big Calculator Plus — an optional auto-renewing subscription, one year in length. No ads, plus a bigger keypad and display with more room for your calculations. Payment is charged to your Apple Account when you confirm the purchase. It renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. The price is shown before you confirm. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://developer-yl.github.io/big-calculator/privacy.html

Screenshots

Calculator3 screens
BIG CALCULATOR.4 screens

Verdict

The call

The clearest difference is review sentiment: BIG CALCULATOR. at 100% against Calculator's 38%. BIG CALCULATOR. also leads on rating (4.5 vs 3.0) and update cadence (weekly vs every 4 months). Calculator's advantage is ads (none vs shown) and ratings volume (9.8K vs 54). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

BIG CALCULATOR. holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Calculator has 9.8K ratings behind it against 54, so its average is the more settled of the two. Written reviews point the same way: 38% of Calculator's written reviews are positive against 100% of BIG CALCULATOR.'s.

UpkeepUpdate frequency

Calculator ships an update every 4 months, BIG CALCULATOR. weekly. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.

Scorecard7 real differences · 3 level
Calculator versus BIG CALCULATOR.: the parameters behind the verdict, then further details
ParameterCalculatorBIG CALCULATOR.
PriceFreeFree
Rating3.0 (9.8K ratings)4.5 (54 ratings) — better
Positive reviews37.7% of reviews100.0% of reviews — better
Number of ratings9.8K — better54
Update frequencyEvery 4 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS10.0 — better15.0
Further details — not scored
Size17 MB13 MB
Age rating4++4
DeveloperAppleAdysseus

Customer experience

Calculator

All ratings9,810 ratings
Positive47.8%
Neutral6.8%
Negative45.4%
Written reviews1,275 reviews
Positive37.7%
Neutral10.2%
Negative52.1%

BIG CALCULATOR.

All ratings54 ratings
Positive85.2%
Neutral11.1%
Negative3.7%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Calculator

Reported bugs

3 issues
  • Calculator disappearing from home screen
  • Incorrect calculation results
  • Inconsistent behavior with parentheses and scientific functions

Requested features

5 requests
  • Restore ability to repeat calculations with '='
  • Add 'clear' button
  • Show full calculation history
  • Improve usability for advanced math
  • Bring calculator to iPad

BIG CALCULATOR.

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Calculator

No in-app purchases

None

BIG CALCULATOR.

No in-app purchases

Questions

Is Calculator free?
Calculator is free to download, with no in-app purchases.
Is BIG CALCULATOR. free?
BIG CALCULATOR. is free to download, with no in-app purchases.
Which has better reviews, Calculator or BIG CALCULATOR.?
BIG CALCULATOR. is rated higher. Calculator averages 3.0 out of 5 from 9.8K ratings, while BIG CALCULATOR. averages 4.5 from 54 ratings.
Do Calculator or BIG CALCULATOR. have ads?
BIG CALCULATOR. shows ads; Calculator does not.
Which is updated more often, Calculator or BIG CALCULATOR.?
Calculator ships an update every 4 months, and BIG CALCULATOR. weekly. Most recently, Calculator was updated on September 26, 2026 and BIG CALCULATOR. on September 21, 2026.

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