# OptiUnit Lite vs ScaFix

The clearest difference is in-app purchases: OptiUnit Lite at none against ScaFix's 10. OptiUnit Lite also leads on ads (none vs shown) and iOS requirement (13.0 vs 18.0). ScaFix's advantage is update cadence (every 2 days vs fortnightly). On price and device support there is nothing between them.

Both are free to download. ScaFix sells 10 in-app purchases, starting at $8.99 per 7 days. OptiUnit Lite asks for nothing beyond the download.

OptiUnit Lite ships an update fortnightly, ScaFix every 2 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | OptiUnit Lite | ScaFix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 37 MB | 72 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OptiUnit ApS](https://appshunter.io/developer/1529437877) | [OLE EMIL FRIKSTAD URSTAD](https://appshunter.io/developer/1709127884) |

## What reviewers say

### OptiUnit Lite

[App page](https://appshunter.io/ios/app/optiunit-lite/id6473189811)

**In-app purchases:** none


### ScaFix

[App page](https://appshunter.io/ios/app/scafix-scaffold-calculator/id6759226400)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro weekly | $8.99 | per 7 days |
| ScaFix Basic Monthly | $12.99 | per month |
| ScaFix Basic Quarterly | $14.99 | per 3 months |
| ScaFix Basic Light Yearly | $29.99 | per year |
| ScaFix Pro Monthly | $34.99 | per month |
| ScaFix Basic Yearly | $49.99 | per year |
| ScaFix Basic Yearly | $59.99 | per year |
| ScaFix Pro Quarterly | $79.99 | per 3 months |
| ScaFix Pro Yearly | $249.99 | per year |
| Try one week | $5.99 | one-time |


## Frequently asked questions

### Is OptiUnit Lite free?

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

### Is ScaFix free?

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

### Do OptiUnit Lite or ScaFix have ads?

ScaFix shows ads; OptiUnit Lite does not.

### Which is updated more often, OptiUnit Lite or ScaFix?

OptiUnit Lite ships an update fortnightly, and ScaFix every 2 days. Most recently, OptiUnit Lite was updated on October 30, 2026 and ScaFix on November 5, 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.*