# Smart Green Converter vs Unit Converter

The clearest difference is in-app purchases: Smart Green Converter at none against Unit Converter's 1. Unit Converter's advantage is update cadence (every 2 weeks vs every 7 months) and iOS requirement (12.0 vs 14.0). On price, ads and device support there is nothing between them.

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

Smart Green Converter ships an update every 7 months, Unit Converter every 2 weeks. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Smart Green Converter | Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-green-converter/id970629053/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 18 MB | 29 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Green Flame Gas Co](https://appshunter.io/developer/1479226447) | [伟鹏 李](https://appshunter.io/developer/1817642925) |

## What reviewers say

### Smart Green Converter

[App page](https://appshunter.io/ios/app/smart-green-converter/id970629053)

Easily convert between various units of measurement for gases, including length, power, volume, mass, and pressure. Share your conversion results via email or SMS, or copy them to your notes.

**Highlights:** Unit of Measurement Conversion, Length Units, Power Units, Volume Units, Mass Units, Pressure Units, Share Conversion Results

**Features:** macOS Compatibility

**In-app purchases:** none


### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-easyunit/id6754090225)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Premium Membership | $0.99 | one-time |


## Frequently asked questions

### Is Smart Green Converter free?

Smart Green Converter is free to download, with no in-app purchases.

### Is Unit Converter free?

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

### Do Smart Green Converter or Unit Converter have ads?

Neither Smart Green Converter nor Unit Converter shows ads.

### Which is updated more often, Smart Green Converter or Unit Converter?

Smart Green Converter ships an update every 7 months, and Unit Converter every 2 weeks. Most recently, Smart Green Converter was updated on November 1, 2026 and Unit Converter on October 25, 2026.

---

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