# Unit Converter and Calc vs UnitDeck

The clearest difference is in-app purchases: Unit Converter and Calc at none against UnitDeck's 1. Unit Converter and Calc also leads on iOS requirement (15.6 vs 17.0). UnitDeck's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. UnitDeck sells 1 one-off in-app purchase. Unit Converter and Calc asks for nothing beyond the download.

Unit Converter and Calc ships an update every 2 months, UnitDeck every 2 weeks. The most recent releases landed on October 1, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Unit Converter and Calc | UnitDeck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/unit-converter-and-calc/id1617794152/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 31 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Qtonz infosoft private limited](https://appshunter.io/developer/1548474074) | [建辉 刘](https://appshunter.io/developer/6790622804) |

## What reviewers say

### Unit Converter and Calc

[App page](https://appshunter.io/ios/app/unit-converter-and-calc/id1617794152)

This app offers a comprehensive suite of conversion tools for everyday needs, including units of length, weight, temperature, and currency. It also functions as a scientific and arithmetic calculator, with specialized calculators for age, EMI, BMI, and more.

**Highlights:** Unit conversion for length, weight, temperature, volume, time, Scientific and arithmetic calculator, Real-time currency and cryptocurrency converter, Age, EMI, BMI, Percentage, GST calculators, History display for previous calculations, Floating calculator for multitasking

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

**In-app purchases:** none


### UnitDeck

[App page](https://appshunter.io/ios/app/unitdeck-work-unit-converter/id6792440865)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitDeck Pro – Lifetime | $3.99 | one-time |


## Frequently asked questions

### Is Unit Converter and Calc free?

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

### Is UnitDeck free?

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

### Do Unit Converter and Calc or UnitDeck have ads?

Unit Converter and Calc shows ads; UnitDeck does not.

### Which is updated more often, Unit Converter and Calc or UnitDeck?

Unit Converter and Calc ships an update every 2 months, and UnitDeck every 2 weeks. Most recently, Unit Converter and Calc was updated on October 1, 2026 and UnitDeck on October 19, 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.*