# Conversion Calculator Plus vs SM Calculator

The clearest difference is in-app purchases: SM Calculator at none against Conversion Calculator Plus's 1. SM Calculator also leads on ads (none vs shown) and rating (5.0 vs 4.7). Conversion Calculator Plus's advantage is ratings volume (15K vs 2). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Conversion Calculator Plus sells 1 in-app purchase, starting at $9.99 per year. SM Calculator asks for nothing beyond the download.

SM Calculator holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Conversion Calculator Plus has 15K ratings behind it against 2, so its average is the more settled of the two.

Conversion Calculator Plus ships an update every 2 days, SM Calculator daily. The most recent releases landed on November 8, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Conversion Calculator Plus | SM Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (15K ratings)](https://appshunter.io/ios/app/conversion-calculator-plus/id1113920724/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sm-calculator/id1663949657/reviews)** |
| Number of ratings | **15K** | 2 |
| Positive reviews | 69.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 59 MB | 8 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Adysseus](https://appshunter.io/developer/447444997) | [Body Culture](https://appshunter.io/developer/910681467) |

## What reviewers say

### Conversion Calculator Plus

[App page](https://appshunter.io/ios/app/conversion-calculator-plus/id1113920724)

This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.

**Highlights:** Unit and currency conversion, Supports 160+ currencies (real & crypto), Automatic currency exchange rate updates, Simple or carousel design options, Dark Mode support, Customizable home screen layout, Split screen mode on iPad

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads For One Year | $9.99 | per year |

**What reviewers like**

- 🚀 Great app
- 👍 Easy to use
- 🚀 Comprehensive conversions
- 👍 Intuitive interface
- 🚀 Useful tool

**What reviewers complain about**

- 🐛 Consent required for tracking
- 🐛 Update problems
- 🐛 Currency not updating
- 🔒 Forced to allow tracking
- 🔒 Forced to subscribe or view ads

**Reported bugs**

- Currency conversion not working
- App gets stuck on consent page
- Unable to get past ads/subscription page

**Requested features**

- Add running pace conversions
- Add shoe size converter
- Provide paid ad-free version


### SM Calculator

[App page](https://appshunter.io/ios/app/sm-calculator/id1663949657)

Easily convert between standard and metric units for calculations. Supports decimal and fraction values in inches, and millimeters. Tap values to see equivalents or add them to a pin list for quick access.

**Highlights:** Cross-unit calculations, Decimal and fraction support, Metric unit conversion, Tap to convert values, Pin list for quick access, Conversion table

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

**In-app purchases:** none


## Frequently asked questions

### Is Conversion Calculator Plus free?

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

### Is SM Calculator free?

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

### Which has better reviews, Conversion Calculator Plus or SM Calculator?

SM Calculator is rated higher. Conversion Calculator Plus averages 4.7 out of 5 from 15K ratings, while SM Calculator averages 5.0 from 2 ratings.

### Do Conversion Calculator Plus or SM Calculator have ads?

Conversion Calculator Plus shows ads; SM Calculator does not.

### Which is updated more often, Conversion Calculator Plus or SM Calculator?

Conversion Calculator Plus ships an update every 2 days, and SM Calculator daily. Most recently, Conversion Calculator Plus was updated on November 8, 2026 and SM Calculator on November 3, 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.*