# Unitify vs UnitDeck

The clearest difference is in-app purchases: Unitify at none against UnitDeck's 1. Unitify also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Unitify | UnitDeck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 5 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Marwa Abou Niaaj](https://appshunter.io/developer/1407184850) | [建辉 刘](https://appshunter.io/developer/6790622804) |

## What reviewers say

### Unitify

[App page](https://appshunter.io/ios/app/unitify-unit-conversion/id1641864451)

**In-app purchases:** none


### UnitDeck

[App page](https://appshunter.io/ios/app/unitdeck-work-unit-converter/id6792440865)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitDeck Pro – Lifetime | $3.99 | one-time |


## Frequently asked questions

### Is Unitify free?

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

### Is UnitDeck free?

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

### Do Unitify or UnitDeck have ads?

Neither Unitify nor UnitDeck shows ads.

### Which is updated more often, Unitify or UnitDeck?

Unitify ships an update every 2 weeks, and UnitDeck every 2 weeks. Most recently, Unitify was updated on October 15, 2026 and UnitDeck on October 19, 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.*