# Conversion Calculator Plus vs Sterna Unigem Dealer

The clearest difference is in-app purchases: Sterna Unigem Dealer at none against Conversion Calculator Plus's 1. Sterna Unigem Dealer also leads on ads (none vs shown) and rating (5.0 vs 4.7). Conversion Calculator Plus's advantage is update cadence (every 2 days vs every 2 months) and ratings volume (15K vs 1). On price, 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. Sterna Unigem Dealer asks for nothing beyond the download.

Sterna Unigem Dealer 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 1, so its average is the more settled of the two.

Conversion Calculator Plus ships an update every 2 days, Sterna Unigem Dealer every 2 months. The most recent releases landed on November 10, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Conversion Calculator Plus | Sterna Unigem Dealer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (15K ratings)](https://appshunter.io/ios/app/conversion-calculator-plus/id1113920724/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sterna-unigem-dealer/id6462632140/reviews)** |
| Number of ratings | **15K** | 1 |
| Positive reviews | 69.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 59 MB | 76 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Adysseus](https://appshunter.io/developer/447444997) | [Sterna Security Devices Private Limited](https://appshunter.io/developer/1751436158) |

## 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


### Sterna Unigem Dealer

[App page](https://appshunter.io/ios/app/sterna-unigem-dealer/id6462632140)

This application is designed for security lock opening. It provides a tool for locksmiths and security professionals to access and manage lock systems.

**Highlights:** Security lock opening, Lock management, Professional tool

**Features:** macOS Compatibility

**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 Sterna Unigem Dealer free?

Sterna Unigem Dealer is free to download, with no in-app purchases.

### Which has better reviews, Conversion Calculator Plus or Sterna Unigem Dealer?

Sterna Unigem Dealer is rated higher. Conversion Calculator Plus averages 4.7 out of 5 from 15K ratings, while Sterna Unigem Dealer averages 5.0 from 1 ratings.

### Do Conversion Calculator Plus or Sterna Unigem Dealer have ads?

Conversion Calculator Plus shows ads; Sterna Unigem Dealer does not.

### Which is updated more often, Conversion Calculator Plus or Sterna Unigem Dealer?

Conversion Calculator Plus ships an update every 2 days, and Sterna Unigem Dealer every 2 months. Most recently, Conversion Calculator Plus was updated on November 10, 2026 and Sterna Unigem Dealer 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.*