# Unit Converter vs SIM

The clearest difference is in-app purchases: SIM at none against Unit Converter's 1. SIM also leads on ads (none vs shown). Unit Converter's advantage is update cadence (every 4 days vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Unit Converter sells 1 one-off in-app purchase. SIM asks for nothing beyond the download.

Unit Converter ships an update every 4 days, SIM monthly. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Unit Converter | SIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/unit-converter-auc/id1565736843/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 35 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andre Leite Barbosa Costa](https://appshunter.io/developer/984337133) | [Vegait Tecnologia da Informacao Ltda EPP](https://appshunter.io/developer/1418711581) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-auc/id1565736843)

This tool offers quick and precise conversions for over 20 categories, including units of measurement and currency. Its user-friendly interface makes it ideal for students, travelers, and hobbyists needing reliable results on the go.

**Highlights:** 20+ conversion categories, Real-time currency exchange rates, Intuitive user interface, Offline conversion capability, Accurate and fast results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Unlock All Themes | $4.99 | one-time |


### SIM

[App page](https://appshunter.io/ios/app/sim/id6445855775)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

Unit Converter is free to download, with in-app purchases available.

### Is SIM free?

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

### Do Unit Converter or SIM have ads?

Unit Converter shows ads; SIM does not.

### Which is updated more often, Unit Converter or SIM?

Unit Converter ships an update every 4 days, and SIM monthly. Most recently, Unit Converter was updated on September 30, 2026 and SIM on October 1, 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.*