# Conversions vs UnitStack

The clearest difference is update cadence: UnitStack at every 2 days against Conversions's every 2 weeks. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Conversions against 5.0 for UnitStack. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Conversions ships an update every 2 weeks, UnitStack every 2 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Conversions | UnitStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/conversions-unit-converter/id6741049598/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/unitstack/id6757423947/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free | Free |
| Size | 6 MB | 4 MB |
| Requires iOS | 18.6 | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Piotr Bakker](https://appshunter.io/developer/1741809059) | [Michael Yang](https://appshunter.io/developer/1866843188) |

## What reviewers say

### Conversions

[App page](https://appshunter.io/ios/app/conversions-unit-converter/id6741049598)

Easily convert over 100 units across various categories like temperature, length, and weight. View conversion formulas, copy results, and share them directly. Enjoy a private, ad-free experience with a native iOS design.

**Highlights:** Convert 100+ units, Temperature, length, weight conversions, View conversion formulas, Copy and share conversions, Native iOS design, Ad-free experience

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

**In-app purchases:** none


### UnitStack

[App page](https://appshunter.io/ios/app/unitstack/id6757423947)

This utility app allows for simultaneous unit and currency conversions, saving your progress and custom units. Its minimalist design ensures a clear and efficient user experience for all your measurement needs.

**Highlights:** Stack multiple conversions, Persistent values, Custom units of measure, Minimalist interface, Custom color themes, Currency conversion

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

**In-app purchases:** none


## Frequently asked questions

### Is Conversions free?

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

### Is UnitStack free?

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

### Which has better reviews, Conversions or UnitStack?

Conversions and UnitStack are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Conversions or UnitStack have ads?

Neither Conversions nor UnitStack shows ads.

### Which is updated more often, Conversions or UnitStack?

Conversions ships an update every 2 weeks, and UnitStack every 2 days. Most recently, Conversions was updated on November 4, 2026 and UnitStack 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.*