# Univert vs UnitStack

The clearest difference is in-app purchases: UnitStack at none against Univert's 1. UnitStack also leads on update cadence (every 2 days vs every 9 days). Univert's advantage is iOS requirement (16.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Univert sells 1 one-off in-app purchase. UnitStack asks for nothing beyond the download.

Univert ships an update every 9 days, UnitStack every 2 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Univert | UnitStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unitstack/id6757423947/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | — | Free |
| Size | 2 MB | 4 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ADRIAN NESHAD](https://appshunter.io/developer/1813365428) | [Michael Yang](https://appshunter.io/developer/1866843188) |

## What reviewers say

### Univert

[App page](https://appshunter.io/ios/app/univert-unit-converter/id6745692591)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Units | $0.99 | one-time |


### 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 Univert free?

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

### Is UnitStack free?

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

### Do Univert or UnitStack have ads?

Neither Univert nor UnitStack shows ads.

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

Univert ships an update every 9 days, and UnitStack every 2 days. Most recently, Univert was updated on October 28, 2026 and UnitStack on October 28, 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.*