# Casting Defect vs Units

The clearest difference is in-app purchases: Casting Defect at none against Units's 3. Units's advantage is update cadence (every 5 weeks vs every 9 months) and device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Units sells 3 in-app purchases, starting at $0.99 per month. Casting Defect asks for nothing beyond the download.

Casting Defect ships an update every 9 months, Units every 5 weeks. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Casting Defect | Units |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (261 ratings)](https://appshunter.io/ios/app/units-unit-converter/id1527329982/reviews)** |
| Number of ratings | — | **261** |
| Positive reviews | — | 45.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 115 MB | 3 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Solutions Fonderie](https://appshunter.io/developer/1094095935) | [Andreas Maier](https://appshunter.io/developer/454364359) |

## What reviewers say

### Casting Defect

[App page](https://appshunter.io/ios/app/casting-defect/id1094095936)

**Features:** macOS Compatibility

**In-app purchases:** none


### Units

[App page](https://appshunter.io/ios/app/units-unit-converter/id1527329982)

Easily convert between a wide range of measurement units and currencies. Features a clear and simple interface for quick conversions of length, mass, volume, speed, and more. Supports popular currencies and common units for everyday use.

**Highlights:** Extensive unit conversions, Multiple currency support, Easy and clear handling, Converts length, mass, volume, Supports speed, area, pressure, Converts time and temperature

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $4.99 | per year |
| One time purchase | $9.99 | one-time |


## Frequently asked questions

### Is Casting Defect free?

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

### Is Units free?

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

### Do Casting Defect or Units have ads?

Neither Casting Defect nor Units shows ads.

### Which is updated more often, Casting Defect or Units?

Casting Defect ships an update every 9 months, and Units every 5 weeks. Most recently, Casting Defect was updated on October 11, 2026 and Units on October 7, 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.*