# Smart Unit Conversion vs Cookie's Measure Aid

The clearest difference is in-app purchases: Cookie's Measure Aid at none against Smart Unit Conversion's 1. Cookie's Measure Aid also leads on ads (none vs shown) and update cadence (every 2 months vs every 15 months). Smart Unit Conversion's advantage is iOS requirement (13.4 vs 18.5). On price and device support there is nothing between them.

Both are free to download. Smart Unit Conversion sells 1 in-app purchase, starting at $1.99 per year. Cookie's Measure Aid asks for nothing beyond the download.

Smart Unit Conversion ships an update every 15 months, Cookie's Measure Aid every 2 months. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Smart Unit Conversion | Cookie's Measure Aid |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 15 months | **Every 2 months** |
| Size | 41 MB | 9 MB |
| Requires iOS | **13.4** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Yui Lau](https://appshunter.io/developer/1791465155) | [Cookie Mix Entertainment LLC](https://appshunter.io/developer/1825243914) |

## What reviewers say

### Smart Unit Conversion

[App page](https://appshunter.io/ios/app/smart-unit-conversion/id1643381985)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Year | $1.99 | per year |


### Cookie's Measure Aid

[App page](https://appshunter.io/ios/app/cookies-measure-aid/id6751074811)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Unit Conversion free?

Smart Unit Conversion is free to download, with in-app purchases available.

### Is Cookie's Measure Aid free?

Cookie's Measure Aid is free to download, with no in-app purchases.

### Do Smart Unit Conversion or Cookie's Measure Aid have ads?

Smart Unit Conversion shows ads; Cookie's Measure Aid does not.

### Which is updated more often, Smart Unit Conversion or Cookie's Measure Aid?

Smart Unit Conversion ships an update every 15 months, and Cookie's Measure Aid every 2 months. Most recently, Smart Unit Conversion was updated on October 8, 2026 and Cookie's Measure Aid on October 14, 2026.

---

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