# STRUCT Construction Calculator vs CALC by Webb Labs

The clearest difference is ads: STRUCT Construction Calculator at none against CALC by Webb Labs's shown. STRUCT Construction Calculator also leads on iOS requirement (13.0 vs 15.5). CALC by Webb Labs's advantage is update cadence (every 2 days vs every 4 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

STRUCT Construction Calculator ships an update every 4 months, CALC by Webb Labs every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | STRUCT Construction Calculator | CALC by Webb Labs |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 16 MB | 179 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MOBILEXAPPS MB](https://appshunter.io/developer/1685170475) | [Webb Labs Ltd.](https://appshunter.io/developer/1888390157) |

## What reviewers say

### STRUCT Construction Calculator

[App page](https://appshunter.io/ios/app/struct-construction-calculator/id6758335610)

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

**In-app purchases:** none


### CALC by Webb Labs

[App page](https://appshunter.io/ios/app/calc-by-webb-labs/id6761248737)

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

**In-app purchases:** none


## Frequently asked questions

### Is STRUCT Construction Calculator free?

STRUCT Construction Calculator is free to download, with no in-app purchases.

### Is CALC by Webb Labs free?

CALC by Webb Labs is free to download, with no in-app purchases.

### Do STRUCT Construction Calculator or CALC by Webb Labs have ads?

CALC by Webb Labs shows ads; STRUCT Construction Calculator does not.

### Which is updated more often, STRUCT Construction Calculator or CALC by Webb Labs?

STRUCT Construction Calculator ships an update every 4 months, and CALC by Webb Labs every 2 days. Most recently, STRUCT Construction Calculator was updated on October 25, 2026 and CALC by Webb Labs on October 25, 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.*