# Engineering Calculator vs Smart Calculator·

The clearest difference is ads: Smart Calculator· at none against Engineering Calculator's shown. Smart Calculator· also leads on monetization model (free vs ad-supported). Engineering Calculator's advantage is update cadence (monthly vs every 7 months) and rating (4.5 vs 4.3). On price, ratings volume, in-app purchases and device support there is nothing between them.

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

Engineering Calculator holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

Engineering Calculator ships an update monthly, Smart Calculator· every 7 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Engineering Calculator | Smart Calculator· |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/engineering-calculator/id1395510375/reviews)** | [4.3 (4 ratings)](https://appshunter.io/ios/app/smart-calculator/id6480170210/reviews) |
| Number of ratings | 2 | **4** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | Ad-supported | **Free** |
| Size | 1 MB | 4 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masato Kanazawa](https://appshunter.io/developer/1110570349) | [瑞媚 杨](https://appshunter.io/developer/1731046721) |

## What reviewers say

### Engineering Calculator

[App page](https://appshunter.io/ios/app/engineering-calculator/id1395510375)

This utility app helps users convert units and calculate tips, primarily for those in the US. It operates offline and aims for minimal user interaction to provide quick results. Useful for avoiding misunderstandings in business dealings due to unit differences.

**Highlights:** Unit conversion, Tip calculation, Offline functionality, Minimalist interface, Business negotiation aid

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

**In-app purchases:** none


### Smart Calculator·

[App page](https://appshunter.io/ios/app/smart-calculator/id6480170210)

This app offers a comprehensive suite of mathematical calculation tools, from basic arithmetic to advanced calculus and matrix operations. It also includes unit conversions and saves your calculation history for easy review. Personalize your experience with themes and night mode.

**Highlights:** Comprehensive calculation functions, Advanced mathematical operations, Unit conversion, Calculation history, Personalized themes and night mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Engineering Calculator free?

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

### Is Smart Calculator· free?

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

### Which has better reviews, Engineering Calculator or Smart Calculator·?

Engineering Calculator is rated higher. Engineering Calculator averages 4.5 out of 5 from 2 ratings, while Smart Calculator· averages 4.3 from 4 ratings.

### Do Engineering Calculator or Smart Calculator· have ads?

Engineering Calculator shows ads; Smart Calculator· does not.

### Which is updated more often, Engineering Calculator or Smart Calculator·?

Engineering Calculator ships an update monthly, and Smart Calculator· every 7 months. Most recently, Engineering Calculator was updated on November 2, 2026 and Smart Calculator· on November 4, 2026.

---

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