# Tire Rotation Pro vs STRUCT Construction Calculator

The clearest difference is in-app purchases: STRUCT Construction Calculator at none against Tire Rotation Pro's 2. STRUCT Construction Calculator also leads on update cadence (every 4 months vs every 10 months) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Tire Rotation Pro sells 2 in-app purchases, starting at $0.49 per month. STRUCT Construction Calculator asks for nothing beyond the download.

Tire Rotation Pro ships an update every 10 months, STRUCT Construction Calculator every 4 months. The most recent releases landed on September 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Tire Rotation Pro | STRUCT Construction Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 4 months** |
| Size | 78 MB | 16 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tire Rotation](https://appshunter.io/developer/1769539425) | [MOBILEXAPPS MB](https://appshunter.io/developer/1685170475) |

## What reviewers say

### Tire Rotation Pro

[App page](https://appshunter.io/ios/app/tire-rotation-pro/id6702006150)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tire Rotation Pro Monthly | $0.49 | per month |
| Tire Rotation Pro Yearly | $5.99 | per year |


### STRUCT Construction Calculator

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Tire Rotation Pro free?

Tire Rotation Pro is free to download, with in-app purchases available.

### Is STRUCT Construction Calculator free?

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

### Do Tire Rotation Pro or STRUCT Construction Calculator have ads?

Neither Tire Rotation Pro nor STRUCT Construction Calculator shows ads.

### Which is updated more often, Tire Rotation Pro or STRUCT Construction Calculator?

Tire Rotation Pro ships an update every 10 months, and STRUCT Construction Calculator every 4 months. Most recently, Tire Rotation Pro was updated on September 26, 2026 and STRUCT Construction Calculator 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.*