Comparison

Scientific Calc vs Calculator Smart

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

Head to head
About

Scientific Calc

This utility app provides advanced scientific calculation functions with an intuitive interface. It offers easy access to functions via swiping and large, uncluttered buttons for faster, more reliable calculations. Customize your experience with background options and enjoy extended accuracy for complex computations.

Highlights
  • Swipe-based access to scientific functions
  • Large, uncluttered buttons
  • Backspace key for corrections
  • Copy and paste functionality
  • Customizable background and display
  • Extended accuracy calculations
Features
Read full description

Scientific Calculator for iPad and iPhone. Easy to access the scientific functions by swiping between exponents, logs and sinus functions so all buttons are large and uncluttereds, this allows you to work faster and more reliable (no rotation or "2nd" function keys needed). All the functions are visible on the iPad, but more are revealed by rotating to landscape. Balloon help for easy functionality. Features: - Correct with a backspace key if you enter a wrong digit without having to redo. - Parantheses and correct calculation priority. - Copy and Paste numbers to other Apps, by tapping on the display. - Change number display to Fixed, Scientific, etc., by tapping on the display. - Customize you background and fixed digits. - An audible sound confirms if you have pressed a button, which can be easily disabled by touching the speaker. - Previous calculation is repeated when the equal sign is pressed. - Memory is saved between uses. - Degrees and Radians can be switched by pressing the symbol on the screen or a button. - A visible and audible error when trying to divide by zero or take the square root of a negative number. - Numbers are shown in local format, depending on your Region Formats, i.e. comma used in Europe. - Calculations are done in extended accuracy so that the square root of 2 repeated a few times, followed by a square will result in 2, not 1.999999999999983.

About

Calculator Smart

This app offers a powerful and precise calculator for everyday math and advanced scientific computations. It features a clean interface with large buttons, supporting complex equations, multiple modes, and intuitive input methods. Personalize your experience with colorful skins and custom icons.

Highlights
  • 30+ scientific operations
  • Degrees and Radians support
  • Parentheses and nested equations
  • Intuitive input with slide-to-delete
  • Copy & Paste results
  • Apple Watch app and Lock Screen Widget
  • Colorful skins and custom icons
Features
Read full description

Calculator Smart is the most powerful and precise calculator for iPhone, iPad, and Apple Watch — built for everyday math and advanced scientific computations alike. Whether you need a quick percentage or a complex nested equation with parentheses, Calculator Smart handles it all with a clean, modern interface and lightning-fast big buttons. Scientific & Standard Modes • 30+ scientific operations including trigonometry, logarithms, and more • Degrees and Radians support • Parentheses and nested parentheses for complex equations • Output in Decimal or Scientific Notation (mantissa/exponent) Intuitive Input • Slide to delete wrong digits instantly • Double-tap or long-press to Copy & Paste results • Full External Keyboard support (Bluetooth & Smart Keyboard) • Three-digit grouping with locale-specific decimal and thousands separators Cross-Platform & Widgets • Apple Watch app with Complication shortcuts • Lock Screen Widget — calculate without unlocking your device • Messages Extension — share results directly in conversations • Multitasking: Slide Over and Split View (iPad) Personalization • Colorful skins to match your style • Custom App Icons that match your chosen skin • Button sound feedback for a satisfying tactile feel Universal Purchase — buy once, use on all your Apple devices. Download Calculator Smart for FREE today!

Screenshots

Scientific Calc3 screens
Calculator Smart4 screens

Verdict

The call

The clearest difference is price: Calculator Smart at Free against Scientific Calc's $1.99. Calculator Smart also leads on rating (4.7 vs 3.7) and ratings volume (498 vs 3). Scientific Calc's advantage is in-app purchases (none vs 3) and ads (none vs shown). On update cadence 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

Calculator Smart is free to download; Scientific Calc costs $1.99 up front. Calculator Smart sells 3 one-off in-app purchases. Scientific Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculator Smart holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Calculator Smart has 498 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 50% of Scientific Calc's written reviews are positive against 36% of Calculator Smart's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Scientific Calc ships an update every 5 months, Calculator Smart every 4 months. Both last shipped on October 23, 2026.

Scorecard9 real differences · 1 level
Scientific Calc versus Calculator Smart: the parameters behind the verdict, then further details
ParameterScientific CalcCalculator Smart
Price$1.99Free — better
Rating3.7 (3 ratings)4.7 (498 ratings) — better
Positive reviews50.0% of reviews — better36.4% of reviews
Number of ratings3498 — better
Update frequencyEvery 5 monthsEvery 4 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod, Mac, Apple TV, Apple Watch — better
Requires iOS26.013.0 — better
Further details — not scored
Size15 MB24 MB
Age rating4+4+
DeveloperHannes SverrissonMiroslav Otsedarski

Customer experience

Scientific Calc

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Calculator Smart

All ratings494 ratings
Positive93.1%
Neutral1.2%
Negative5.7%
Written reviews22 reviews
Positive36.4%
Neutral27.3%
Negative36.4%

In-app purchases

None

Scientific Calc

No in-app purchases

3 purchases

Calculator Smart

One-time3
  • Colorful Skins and Remove Ads$1.99
  • Colorful Skins$1.99
  • Colorful Skins for Mac app$1.99

Questions

Is Scientific Calc free?
Scientific Calc costs $1.99, with no in-app purchases.
Is Calculator Smart free?
Calculator Smart is free to download, with in-app purchases available.
Which has better reviews, Scientific Calc or Calculator Smart?
Calculator Smart is rated higher. Scientific Calc averages 3.7 out of 5 from 3 ratings, while Calculator Smart averages 4.7 from 498 ratings.
Do Scientific Calc or Calculator Smart have ads?
Calculator Smart shows ads; Scientific Calc does not.
Which is updated more often, Scientific Calc or Calculator Smart?
Scientific Calc ships an update every 5 months, and Calculator Smart every 4 months. Most recently, Scientific Calc was updated on October 23, 2026 and Calculator Smart on October 23, 2026.

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