# Unit Converter vs OverflowEV

The clearest difference is in-app purchases: OverflowEV at none against Unit Converter's 1. OverflowEV also leads on ads (none vs shown). Unit Converter's advantage is update cadence (daily vs every 6 days). 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. OverflowEV asks for nothing beyond the download.

Unit Converter ships an update daily, OverflowEV every 6 days. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Unit Converter | OverflowEV |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 6 days |
| Size | 44 MB | 25 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Vasilii Polovnikov](https://appshunter.io/developer/1716165883) | [Ben Wilson](https://appshunter.io/developer/561668597) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-length-weight/id6772571131)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium · Lifetime | $19.99 | one-time |


### OverflowEV

[App page](https://appshunter.io/ios/app/overflowev/id6797779321)

**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 OverflowEV free?

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

### Do Unit Converter or OverflowEV have ads?

Unit Converter shows ads; OverflowEV does not.

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

Unit Converter ships an update daily, and OverflowEV every 6 days. Most recently, Unit Converter was updated on September 19, 2026 and OverflowEV on September 14, 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.*