# Unit Conversion vs Pencil Notes

The clearest difference is price: Unit Conversion at Free against Pencil Notes's $0.99. Pencil Notes's advantage is ads (none vs shown) and iOS requirement (15.1 vs 17.6). On in-app purchases and device support there is nothing between them.

Unit Conversion is free to download; Pencil Notes costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Unit Conversion | Pencil Notes |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Fortnightly |
| Size | 55 MB | 41 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ricardo Contente](https://appshunter.io/developer/1835945159) | [Kliv Spahiu](https://appshunter.io/developer/1867066303) |

## What reviewers say

### Unit Conversion

[App page](https://appshunter.io/ios/app/unit-conversion-pro/id6751759968)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pencil Notes

[App page](https://appshunter.io/ios/app/pencil-notes-handwriting/id6787762712)

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Conversion free?

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

### Is Pencil Notes free?

Pencil Notes costs $0.99, with no in-app purchases.

### Do Unit Conversion or Pencil Notes have ads?

Unit Conversion shows ads; Pencil Notes does not.

---

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