# Simple Units Converter lite vs UnitStack

The clearest difference is update cadence: UnitStack at every 2 days against Simple Units Converter lite's every 8 months. Simple Units Converter lite's advantage is iOS requirement (16.2 vs 18.6). 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 Simple Units Converter lite against 5.0 for UnitStack. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Simple Units Converter lite ships an update every 8 months, UnitStack every 2 days. The most recent releases landed on September 6, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Simple Units Converter lite | UnitStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/simple-units-converter-lite/id599423578/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/unitstack/id6757423947/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 9 MB | 4 MB |
| Requires iOS | **16.2** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mind Trends LLC](https://appshunter.io/developer/582509215) | [Michael Yang](https://appshunter.io/developer/1866843188) |

## What reviewers say

### Simple Units Converter lite

[App page](https://appshunter.io/ios/app/simple-units-converter-lite/id599423578)

Easily convert between various units of measurement with this user-friendly calculator. It offers a wide range of dimensions and units for everyday use and specific applications.

**Highlights:** Extensive unit library, 22 different dimensions, User-friendly interface, General-purpose calculator, Lite version

**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

**In-app purchases:** none


## Frequently asked questions

### Is Simple Units Converter lite free?

Simple Units Converter lite 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, Simple Units Converter lite or UnitStack?

Simple Units Converter lite and UnitStack are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Simple Units Converter lite or UnitStack have ads?

Neither Simple Units Converter lite nor UnitStack shows ads.

### Which is updated more often, Simple Units Converter lite or UnitStack?

Simple Units Converter lite ships an update every 8 months, and UnitStack every 2 days. Most recently, Simple Units Converter lite was updated on September 6, 2026 and UnitStack on September 17, 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.*