# UnitSnap vs Convert Units Calculator

The clearest difference is update cadence: Convert Units Calculator at every 2 months against UnitSnap's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. UnitSnap sells 1 one-off in-app purchase and Convert Units Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UnitSnap ships an update every 4 months, Convert Units Calculator every 2 months. The most recent releases landed on October 30, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | UnitSnap | Convert Units Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 4 MB | 49 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Chia-Chun Hsieh](https://appshunter.io/developer/908221958) | [Nelson Lai](https://appshunter.io/developer/1477911199) |

## What reviewers say

### UnitSnap

[App page](https://appshunter.io/ios/app/unitsnap/id6742785813)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Convert Units Calculator

[App page](https://appshunter.io/ios/app/convert-units-calculator/id6758808738)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Convert Pro | $3.99 | one-time |


## Frequently asked questions

### Is UnitSnap free?

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

### Is Convert Units Calculator free?

Convert Units Calculator is free to download, with in-app purchases available.

### Do UnitSnap or Convert Units Calculator have ads?

Both UnitSnap and Convert Units Calculator show ads.

### Which is updated more often, UnitSnap or Convert Units Calculator?

UnitSnap ships an update every 4 months, and Convert Units Calculator every 2 months. Most recently, UnitSnap was updated on October 30, 2026 and Convert Units Calculator on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*