# Calc 2M vs Calculator Smart

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.

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 October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Calc 2M | Calculator Smart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (27 ratings)](https://appshunter.io/ios/app/calc-2m/id492563960/reviews)** | [4.7 (494 ratings)](https://appshunter.io/ios/app/calculator-smart/id698030968/reviews) |
| Number of ratings | 27 | **494** |
| Positive reviews | **81.0% of reviews** | 36.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 48 MB | 24 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod, Apple Watch | **iPhone, iPad, iPod, Mac, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [inkOfPixel srl](https://appshunter.io/developer/492563963) | [Miroslav Otsedarski](https://appshunter.io/developer/450091139) |

## What reviewers say

### Calc 2M

[App page](https://appshunter.io/ios/app/calc-2m/id492563960)

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.

**Highlights:** Calculation history, Drag and drop input, Customizable themes, Export calculations, Widget for quick access, Editable expressions, Advanced functions

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ninja Theme | $0.99 | one-time |
| Sunrise Theme | $0.99 | one-time |
| Dev Theme | $0.99 | one-time |
| Vintage Theme | $0.99 | one-time |
| Light theme | $0.99 | one-time |
| Clarity Theme | $0.99 | one-time |
| Theme Pack | $1.99 | one-time |

**What reviewers like**

- 👍 Clean, intuitive, and user-friendly interface
- 🧮 Powerful scientific calculator with extensive functions
- 📜 Accessible calculation history that persists across sessions
- ✏️ Ability to edit and reuse previous expressions
- 🎨 Beautiful, aesthetically pleasing design

**What reviewers complain about**

- 🐛 App crashes on startup (older versions)
- 🔤 Font size and style options are limited
- 📱 iPad version is laggy and poorly optimized
- ❌ Error handling requires restarting from beginning
- 🎮 Swiping gestures sometimes trigger unintended functions

**Reported bugs**

- 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

**Requested features**

- 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


### Calculator Smart

[App page](https://appshunter.io/ios/app/calculator-smart/id698030968)

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:** Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Colorful Skins and Remove Ads | $1.99 | one-time |
| Colorful Skins | $1.99 | one-time |
| Colorful Skins for Mac app | $1.99 | one-time |


## Frequently asked questions

### Is Calc 2M free?

Calc 2M is free to download, with in-app purchases available.

### Is Calculator Smart free?

Calculator Smart is free to download, with in-app purchases available.

### Which has better reviews, Calc 2M or Calculator Smart?

Calc 2M is rated higher. Calc 2M averages 4.9 out of 5 from 27 ratings, while Calculator Smart averages 4.7 from 494 ratings.

### Do Calc 2M or Calculator Smart have ads?

Calculator Smart shows ads; Calc 2M does not.

### Which is updated more often, Calc 2M or Calculator Smart?

Calc 2M ships an update monthly, and Calculator Smart every 4 months. Most recently, Calc 2M was updated on October 14, 2026 and Calculator Smart on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*