# Pro Unit Converter vs Datary Smart Cleaner

The clearest difference is update cadence: Pro Unit Converter at daily against Datary Smart Cleaner's every 2 weeks. Pro Unit Converter also leads on device support (3 vs 1) and iOS requirement (11.0 vs 17). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Pro Unit Converter sells 1 one-off in-app purchase and Datary Smart Cleaner sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Pro Unit Converter ships an update daily, Datary Smart Cleaner every 2 weeks. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Pro Unit Converter | Datary Smart Cleaner |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Free | — |
| Size | 37 MB | 50 MB |
| Requires iOS | **11.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Quang Tri Mai Nguyen](https://appshunter.io/developer/1626809833) | [B O S.R.L.](https://appshunter.io/developer/1880630190) |

## What reviewers say

### Pro Unit Converter

[App page](https://appshunter.io/ios/app/pro-unit-converter/id6452273430)

This free utility app offers a quick and convenient way to convert various units with a beautiful and intuitive interface. Save frequently used conversions for easy access and convert everything from area and length to temperature and data.

**Highlights:** Multiple conversion categories, Save frequent conversions, Intuitive user interface, Quick input and results, Beautiful design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all Ads in the app | $0.99 | one-time |


### Datary Smart Cleaner

[App page](https://appshunter.io/ios/app/datary-smart-cleaner/id6759786554)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| special offer 7.99 trial | $7.99 | per 7 days |
| week 9.99 trial | $9.99 | per 7 days |
| month 19.99 | $19.99 | per month |


## Frequently asked questions

### Is Pro Unit Converter free?

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

### Is Datary Smart Cleaner free?

Datary Smart Cleaner is free to download, with in-app purchases available.

### Do Pro Unit Converter or Datary Smart Cleaner have ads?

Neither Pro Unit Converter nor Datary Smart Cleaner shows ads.

### Which is updated more often, Pro Unit Converter or Datary Smart Cleaner?

Pro Unit Converter ships an update daily, and Datary Smart Cleaner every 2 weeks. Most recently, Pro Unit Converter was updated on October 6, 2026 and Datary Smart Cleaner on October 16, 2026.

---

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