# NotiZen Pro vs Offline Unit Converter

The clearest difference is in-app purchases: Offline Unit Converter at none against NotiZen Pro's 3. Offline Unit Converter also leads on iOS requirement (15.0 vs 17). On price, ads and device support there is nothing between them.

Both are free to download. NotiZen Pro sells 3 in-app purchases, starting at $2.99 per month. Offline Unit Converter asks for nothing beyond the download.

## The numbers

| Metric | NotiZen Pro | Offline Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 3 MB | 2 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [贺 周](https://appshunter.io/developer/1815397078) | [Abid Rahim](https://appshunter.io/developer/1707542441) |

## What reviewers say

### NotiZen Pro

[App page](https://appshunter.io/ios/app/notizen-pro/id6762554707)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NotiZen Pro Monthly | $2.99 | per month |
| NotiZen Pro Yearly | $19.99 | per year |
| NotiZen Pro Lifetime | $49.99 | one-time |


### Offline Unit Converter

[App page](https://appshunter.io/ios/app/offline-unit-converter/id6786961471)

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

**In-app purchases:** none


## Frequently asked questions

### Is NotiZen Pro free?

NotiZen Pro is free to download, with in-app purchases available.

### Is Offline Unit Converter free?

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

### Do NotiZen Pro or Offline Unit Converter have ads?

Neither NotiZen Pro nor Offline Unit Converter 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.*