# Unit Converter vs Conversion Calculator

The clearest difference is in-app purchases: Unit Converter at none against Conversion Calculator's 1. Unit Converter also leads on iOS requirement (14.0 vs 17.0). Conversion Calculator's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 8 months). On price and device support there is nothing between them.

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

Unit Converter ships an update every 8 months, Conversion Calculator every 5 weeks. The most recent releases landed on September 14, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Unit Converter | Conversion Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (157 ratings)](https://appshunter.io/ios/app/conversion-calculator-metric/id6468678523/reviews)** |
| Number of ratings | — | **157** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 7 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [RAJAMRAGHU TECH](https://appshunter.io/developer/1772439027) | [Collins Cheruiyot](https://appshunter.io/developer/1579009978) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-simple/id6450880292)

**Features:** macOS Compatibility

**In-app purchases:** none


### Conversion Calculator

[App page](https://appshunter.io/ios/app/conversion-calculator-metric/id6468678523)

Easily convert between metric and imperial units for weight, length, temperature, area, and time. This app offers precise, fast results with a clean interface, working offline for daily, travel, school, or work needs.

**Highlights:** Metric and imperial unit conversion, Weight, length, temperature, area, time, Offline functionality, Precise and fast results, Clean and minimal interface, Over 100 measurement types

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access forever | $8.99 | one-time |


## Frequently asked questions

### Is Unit Converter free?

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

### Is Conversion Calculator free?

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

### Do Unit Converter or Conversion Calculator have ads?

Unit Converter shows ads; Conversion Calculator does not.

### Which is updated more often, Unit Converter or Conversion Calculator?

Unit Converter ships an update every 8 months, and Conversion Calculator every 5 weeks. Most recently, Unit Converter was updated on September 14, 2026 and Conversion Calculator on September 26, 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.*