# Convert Units vs Critica

The clearest difference is rating: Critica at 5.0 against Convert Units's 1.0. Critica also leads on ads (none vs shown). Convert Units's advantage is in-app purchases (none vs 1) and ratings volume (3 vs 1). On price and device support there is nothing between them.

Both are free to download. Critica sells 1 one-off in-app purchase. Convert Units asks for nothing beyond the download.

Critica holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

## The numbers

| Metric | Convert Units | Critica |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (3 ratings)](https://appshunter.io/ios/app/convert-units-unit-conversion/id1544182674/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/critica-annotations/id6772738844/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Monthly |
| Monetization | Ad-supported | **Free** |
| Size | 9 MB | 19 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [SK Studios Ltd](https://appshunter.io/developer/434192864) | [OMAR DANIEL GRAZIANO](https://appshunter.io/developer/1896485759) |

## What reviewers say

### Convert Units

[App page](https://appshunter.io/ios/app/convert-units-unit-conversion/id1544182674)

Easily convert between metric and imperial units for everyday needs. Offers a wide range of converters including currency, temperature, and length, with offline access and a favorites list for quick use.

**Highlights:** Metric to imperial conversions, Offline access, Favorites list, Currency exchange rates, Convert to fractions, Up to eight significant digits

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

**In-app purchases:** none


### Critica

[App page](https://appshunter.io/ios/app/critica-annotations/id6772738844)

This app provides critical annotations for Islamic texts, including the Quran, Hadith, Sira, Fiqh, and Tafsir. It flags and explains issues like violence, misogyny, and historical errors, citing specific sources for verification. Designed for readers seeking a deeper, critical understanding of Islamic tradition.

**Highlights:** Annotated Quran (Meccan/Medinan), Six Sunni & Twelver Shia Hadith collections, Event-based biography of Muhammad (Sira), Classical jurisprudence (Fiqh) on contested topics, Major classical Tafsir commentaries, Source citation for every claim, Filterable flags for critical issues

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $9.99 | one-time |


## Frequently asked questions

### Is Convert Units free?

Convert Units is free to download, with no in-app purchases.

### Is Critica free?

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

### Which has better reviews, Convert Units or Critica?

Critica is rated higher. Convert Units averages 1.0 out of 5 from 3 ratings, while Critica averages 5.0 from 1 ratings.

### Do Convert Units or Critica have ads?

Convert Units shows ads; Critica does not.

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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.*