# Unit Converter Toolbox vs Unit Converter SDG

The clearest difference is update cadence: Unit Converter Toolbox at every 3 months against Unit Converter SDG's every 12 months. Unit Converter Toolbox also leads on monetization model (free vs ad-supported). Unit Converter SDG's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Unit Converter Toolbox ships an update every 3 months, Unit Converter SDG every 12 months. The most recent releases landed on November 10, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Unit Converter Toolbox | Unit Converter SDG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (13 ratings)](https://appshunter.io/ios/app/unit-converter-sdg/id6741796782/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | 12.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 12 months |
| Monetization | **Free** | Ad-supported |
| Size | 32 MB | 12 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrej Podlubnyj](https://appshunter.io/developer/583628251) | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) |

## What reviewers say

### Unit Converter Toolbox

[App page](https://appshunter.io/ios/app/unit-converter-toolbox/id583628208)

Easily convert between various units of measurement for mass, temperature, distance, volume, pressure, area, weight, density, and more. This application supports both standard and exotic units, offering a straightforward solution for diverse conversion needs.

**Highlights:** Converts physical quantities, Converts volume units, Converts pressure units, Converts area units, Converts weight units, Converts temperature units, Converts density units, Converts length units

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

**In-app purchases:** none


### Unit Converter SDG

[App page](https://appshunter.io/ios/app/unit-converter-sdg/id6741796782)

Easily convert between various units of measurement with this straightforward tool. Quickly and accurately switch from one unit to another for everyday tasks.

**Highlights:** Easy unit conversion, Accurate measurements, Simple interface, Quick switching between units

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter Toolbox free?

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

### Is Unit Converter SDG free?

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

### Do Unit Converter Toolbox or Unit Converter SDG have ads?

Both Unit Converter Toolbox and Unit Converter SDG show ads.

### Which is updated more often, Unit Converter Toolbox or Unit Converter SDG?

Unit Converter Toolbox ships an update every 3 months, and Unit Converter SDG every 12 months. Most recently, Unit Converter Toolbox was updated on November 10, 2026 and Unit Converter SDG on November 4, 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.*