# Unit Converter vs ProfessorApp ABCD Educa

The clearest difference is in-app purchases: ProfessorApp ABCD Educa at none against Unit Converter's 10. ProfessorApp ABCD Educa also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). Unit Converter's advantage is update cadence (weekly vs every 7 months). On price and device support there is nothing between them.

Both are free to download. Unit Converter sells 10 in-app purchases, starting at $0.99 per 7 days. ProfessorApp ABCD Educa asks for nothing beyond the download.

Unit Converter ships an update weekly, ProfessorApp ABCD Educa every 7 months. The most recent releases landed on September 20, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Unit Converter | ProfessorApp ABCD Educa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/unit-converter-science-tools/id1557454960/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 7 months |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 80 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eugene Kugut](https://appshunter.io/developer/1557454962) | [Alexandre Nascimento](https://appshunter.io/developer/1124542723) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-science-tools/id1557454960)

This app offers over 30 unit converters for science, engineering, and everyday use. It features advanced options like adjustable rounding, smart search, and calculation history, with customizable themes and an iPad-optimized interface.

**Highlights:** Over 30 unit converters, Adjustable rounding, Smart search by name or units, Copy/paste values, Swap units with one button, Calculation history, Customizable themes

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access | $0.99 | per 7 days |
| Premium access | $0.99 | per month |
| Premium access | $1.99 | per 7 days |
| Premium access | $1.99 | per month |
| Premium access | $2.99 | per month |
| Premium access | $8.99 | per year |
| Premium access | $9.99 | per year |
| Premium access | $17.99 | per year |
| Premium access | $19.99 | per year |
| Premium access | $44.99 | one-time |


### ProfessorApp ABCD Educa

[App page](https://appshunter.io/ios/app/professorapp-abcd-educa/id6499279887)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

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

### Is ProfessorApp ABCD Educa free?

ProfessorApp ABCD Educa is free to download, with no in-app purchases.

### Do Unit Converter or ProfessorApp ABCD Educa have ads?

Unit Converter shows ads; ProfessorApp ABCD Educa does not.

### Which is updated more often, Unit Converter or ProfessorApp ABCD Educa?

Unit Converter ships an update weekly, and ProfessorApp ABCD Educa every 7 months. Most recently, Unit Converter was updated on September 20, 2026 and ProfessorApp ABCD Educa on September 10, 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.*