# Unit Converter Currency Rate vs Smart Unit Conversion

The clearest difference is update cadence: Unit Converter Currency Rate at every 3 months against Smart Unit Conversion's every 15 months. Smart Unit Conversion's advantage is iOS requirement (13.4 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Unit Converter Currency Rate sells 4 in-app purchases, starting at $4.99 per 7 days and Smart Unit Conversion sells 1 in-app purchase, starting at $1.99 per year. Whichever you choose, the download price is not the number that matters.

Unit Converter Currency Rate ships an update every 3 months, Smart Unit Conversion every 15 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Unit Converter Currency Rate | Smart Unit Conversion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (196 ratings)](https://appshunter.io/ios/app/unit-converter-currency-rate/id1557869688/reviews)** | — |
| Number of ratings | **196** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | Freemium | — |
| Size | 17 MB | 41 MB |
| Requires iOS | 16.6 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [汇杭 钟](https://appshunter.io/developer/1481585840) | [Yui Lau](https://appshunter.io/developer/1791465155) |

## What reviewers say

### Unit Converter Currency Rate

[App page](https://appshunter.io/ios/app/unit-converter-currency-rate/id1557869688)

This app provides instant conversions for over 40 unit categories and 30 global currencies. It offers live exchange rates and offline conversion capabilities, making it ideal for travel, study, and professional tasks. A built-in calculator aids in quick calculations before converting.

**Highlights:** 40+ unit categories, 30+ global currencies, Live exchange rates, Offline conversion, Built-in calculator, Unit size conversion

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $4.99 | per 7 days |
| Premium Monthly | $9.99 | per month |
| Premium Yearly | $29.99 | per year |
| LifeTime Premium | $49.99 | one-time |


### Smart Unit Conversion

[App page](https://appshunter.io/ios/app/smart-unit-conversion/id1643381985)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Year | $1.99 | per year |


## Frequently asked questions

### Is Unit Converter Currency Rate free?

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

### Is Smart Unit Conversion free?

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

### Do Unit Converter Currency Rate or Smart Unit Conversion have ads?

Both Unit Converter Currency Rate and Smart Unit Conversion show ads.

### Which is updated more often, Unit Converter Currency Rate or Smart Unit Conversion?

Unit Converter Currency Rate ships an update every 3 months, and Smart Unit Conversion every 15 months. Most recently, Unit Converter Currency Rate was updated on November 3, 2026 and Smart Unit Conversion on October 27, 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.*