# The ULTIMATE Unit Converter vs Unitio

The clearest difference is in-app purchases: The ULTIMATE Unit Converter at none against Unitio's 3. The ULTIMATE Unit Converter also leads on ads (none vs shown) and iOS requirement (13.1 vs 15.1). Unitio's advantage is update cadence (every 5 days vs fortnightly). On price and device support there is nothing between them.

Both are free to download. Unitio sells 3 in-app purchases, starting at $1.99 per 7 days. The ULTIMATE Unit Converter asks for nothing beyond the download.

The ULTIMATE Unit Converter ships an update fortnightly, Unitio every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | The ULTIMATE Unit Converter | Unitio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/the-ultimate-unit-converter/id1484428653/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free | — |
| Size | 1 MB | 44 MB |
| Requires iOS | **13.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sherzad Kalaf Mohe](https://appshunter.io/developer/1469673573) | [Kin Man Leung](https://appshunter.io/developer/1716597027) |

## What reviewers say

### The ULTIMATE Unit Converter

[App page](https://appshunter.io/ios/app/the-ultimate-unit-converter/id1484428653)

Easily convert between a vast array of units across 20 categories. Simply select a category, input your value, and choose the desired units to see the conversion result.

**Highlights:** 20 conversion categories, 190+ units supported, Intuitive input and output selection, Supports length, temperature, volume, mass, and more, Simple and powerful interface

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

**In-app purchases:** none


### Unitio

[App page](https://appshunter.io/ios/app/unitio-unit-converter/id6759262265)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitioPro | $1.99 | per 7 days |
| UnitioPro | $3.99 | per month |
| UnitioPro | $24.99 | per year |


## Frequently asked questions

### Is The ULTIMATE Unit Converter free?

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

### Is Unitio free?

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

### Do The ULTIMATE Unit Converter or Unitio have ads?

Unitio shows ads; The ULTIMATE Unit Converter does not.

### Which is updated more often, The ULTIMATE Unit Converter or Unitio?

The ULTIMATE Unit Converter ships an update fortnightly, and Unitio every 5 days. Most recently, The ULTIMATE Unit Converter was updated on November 3, 2026 and Unitio on October 31, 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.*