# Calculator Smart vs CompSci Calculator

The clearest difference is in-app purchases: CompSci Calculator at none against Calculator Smart's 3. CompSci Calculator also leads on update cadence (every 3 days vs every 4 months) and review sentiment (63% vs 36%). Calculator Smart's advantage is rating (4.7 vs 4.4) and ratings volume (498 vs 42). On price and ads there is nothing between them.

Both are free to download. Calculator Smart sells 3 one-off in-app purchases. CompSci Calculator asks for nothing beyond the download.

Calculator Smart holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Calculator Smart has 498 ratings behind it against 42, so its average is the more settled of the two. Written reviews complicate that: 36% of Calculator Smart's written reviews are positive against 63% of CompSci Calculator's, so the app with the better star average is not the one people write more warmly about.

Calculator Smart ships an update every 4 months, CompSci Calculator every 3 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Calculator Smart | CompSci Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (498 ratings)](https://appshunter.io/ios/app/calculator-smart/id698030968/reviews)** | [4.4 (42 ratings)](https://appshunter.io/ios/app/compsci-calculator/id1111878012/reviews) |
| Number of ratings | **498** | 42 |
| Positive reviews | 36.4% of reviews | **62.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 24 MB | 55 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | **iPhone, iPad, iPod, Mac, Apple TV, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Miroslav Otsedarski](https://appshunter.io/developer/450091139) | [Corey Smith](https://appshunter.io/developer/1070099434) |

## What reviewers say

### 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 |


### CompSci Calculator

[App page](https://appshunter.io/ios/app/compsci-calculator/id1111878012)

Perform calculations and conversions between decimal, hexadecimal, and binary bases in real-time. Ideal for programmers and computer scientists, it offers simultaneous display of values across all three modes and supports bitwise operations and complements.

**Highlights:** Decimal, hexadecimal, and binary base calculations, Real-time simultaneous conversion, Basic algebra between bases, Selectable bit size (8, 16, 24, 32), Bitwise functions, 1's and 2's complements

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Smart free?

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

### Is CompSci Calculator free?

CompSci Calculator is free to download, with no in-app purchases.

### Which has better reviews, Calculator Smart or CompSci Calculator?

Calculator Smart is rated higher. Calculator Smart averages 4.7 out of 5 from 498 ratings, while CompSci Calculator averages 4.4 from 42 ratings.

### Do Calculator Smart or CompSci Calculator have ads?

Both Calculator Smart and CompSci Calculator show ads.

### Which is updated more often, Calculator Smart or CompSci Calculator?

Calculator Smart ships an update every 4 months, and CompSci Calculator every 3 days. Most recently, Calculator Smart was updated on October 23, 2026 and CompSci Calculator on October 24, 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.*