# Unit Converter vs HereMark

The clearest difference is price: Unit Converter at Free against HereMark's $1.99. HereMark's advantage is iOS requirement (16.6 vs 18.5). On ads, in-app purchases and device support there is nothing between them.

Unit Converter is free to download; HereMark costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Unit Converter | HereMark |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/heremark/id6754931536/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Monetization | — | Paid |
| Size | 12 MB | 5 MB |
| Requires iOS | 18.5 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fenuku Kekeli](https://appshunter.io/developer/1822419894) | [Kai Chen](https://appshunter.io/developer/1818964633) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-convert-units/id6749213264)

**Features:** macOS Compatibility

**In-app purchases:** none


### HereMark

[App page](https://appshunter.io/ios/app/heremark/id6754931536)

Easily capture, organize, and review key passages from books. Scan documents with automatic edge detection, add notes with colorful anchors, and browse insights in a presentation-style layout. Powerful search helps you find and revisit your marked content instantly.

**Highlights:** Document scanning with edge detection, Add notes with colorful anchors, Presentation mode for review, Powerful search functionality, Quick onboarding

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

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

### Is HereMark free?

HereMark costs $1.99, with no in-app purchases.

### Do Unit Converter or HereMark have ads?

Neither Unit Converter nor HereMark shows ads.

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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.*