Calc 2M vs Calculator Smart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calc 2M
This advanced calculator app offers a clean interface with both standard and pro features. It includes a history of calculations, drag-and-drop functionality, customizable themes, and the ability to export results. Ideal for students, engineers, and scientists needing precise calculations on the go.
- Calculation history
- Drag and drop input
- Customizable themes
- Export calculations
- Widget for quick access
- Editable expressions
- Advanced functions
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With over half a million users Calc 2M is the best calculator on the App Store! Calc 2M combines in a simple and beautiful design all the standard and pro features of a calculator! We put particular attention on user experience trying to create the best possible calculator for iPad, iPhone and Apple Watch! Features: • History: All the expressions you make will be saved in your history, you can reuse them whenever you want. • Drag&Drop: Drag your previously typed calculations on the display for an easier and faster entry. • Themes: Change theme to fit your style. A lot of skin options (Dark, Light, Ninja, Sunrise, Dev, Vintage) • Export: Print or send your calculations as you like. You can use any third-part applications that you have installed • Widget: Need a quick calculation? Install the widget. • Readability: Coloured syntax to improve expression readability. • Functions: The powerful advanced functions make it ideal also for students, engineers and scientists. • Editable expressions: Expression completely editable, use the cursor to move within the expression, copy and paste. • Settings: Set Calc 2M according to your needs. We are continually working on Calc 2M to bring you the best product possible! Feedback are very welcome. They help us to improve Calc 2M!
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.
- 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
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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
Verdict
The clearest difference is review sentiment: Calc 2M at 81% against Calculator Smart's 36%. Calc 2M also leads on ads (none vs shown) and update cadence (monthly vs every 4 months). Calculator Smart's advantage is ratings volume (494 vs 27) and device support (6 vs 4). On price, in-app purchases 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
Both are free to download. Calc 2M sells 7 one-off in-app purchases and Calculator Smart sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Calc 2M holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Calculator Smart has 494 ratings behind it against 27, so its average is the more settled of the two. Written reviews point the same way: 81% of Calc 2M's written reviews are positive against 36% of Calculator Smart's.
Calc 2M ships an update monthly, Calculator Smart every 4 months. The most recent releases landed on September 19, 2026 and September 25, 2026 respectively.
| Parameter | Calc 2M | Calculator Smart |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (27 ratings) — better | 4.7 (494 ratings) |
| Positive reviews | 81.0% of reviews — better | 36.4% of reviews |
| Number of ratings | 27 | 494 — better |
| Update frequency | Monthly — better | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac, Apple TV, Apple Watch — better |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 48 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | inkOfPixel srl | Miroslav Otsedarski |
Customer experience
Calc 2M
Calculator Smart
Bugs and requests
Calc 2M
Reported bugs
9 issues- App crashes on startup
- Trigonometric functions produce incorrect results
- Combination function (comb) returns wrong values
- Sin and Tan functions malfunction
- Swiping causes unintended function entry
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- Error state requires complete restart
- iPad version is laggy and unresponsive
- Spelling error in function names (trigonometry misspelled)
- App doesn't open on some devices
Requested features
10 requests- Automatic bracket completion
- Fraction to decimal converter and vice versa
- Apple Watch app support
- More font options and customizable font sizes
- RPN (Reverse Polish Notation) mode
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- Dedicated Clear/CE button in prominent location
- Easier negative number input
- Algebraic functions
- Graph plotting capabilities
- Ability to disable advanced options for basic calculator view
Calculator Smart
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calc 2M
- Ninja Theme$0.99
- Sunrise Theme$0.99
- Dev Theme$0.99
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- Vintage Theme$0.99
- Light theme$0.99
- Clarity Theme$0.99
- Theme Pack$1.99
Calculator Smart
- Colorful Skins and Remove Ads$1.99
- Colorful Skins$1.99
- Colorful Skins for Mac app$1.99
Questions
Is Calc 2M free?
Is Calculator Smart free?
Which has better reviews, Calc 2M or Calculator Smart?
Do Calc 2M or Calculator Smart have ads?
Which is updated more often, Calc 2M or Calculator Smart?
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