# Site Stabilization Calculator vs RTDensity

The clearest difference is ads: RTDensity at none against Site Stabilization Calculator's shown. RTDensity also leads on update cadence (every 5 months vs every 12 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Site Stabilization Calculator ships an update every 12 months, RTDensity every 5 months. The most recent releases landed on September 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Site Stabilization Calculator | RTDensity |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 5 months** |
| Monetization | Ad-supported | — |
| Size | 20 MB | 86 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TYJA Enterprises Corporation](https://appshunter.io/developer/1626166382) | [G4 TECHNOLOGIES LLC](https://appshunter.io/developer/1782981252) |

## What reviewers say

### Site Stabilization Calculator

[App page](https://appshunter.io/ios/app/site-stabilization-calculator/id1131344964)

Calculate spread rates for soil stabilization materials like cement and quicklime, or liquid stabilizers. Estimate project materials such as undercuts, aggregate base course, asphalt, and concrete. Save and share project details with notes and images.

**Highlights:** Calculate spread rates for stabilizing powders, Estimate undercuts, aggregate base course, asphalt, concrete, Save calculations into projects, Add supporting notes and images, Share project calculations, notes, and images

**Features:** macOS Compatibility

**In-app purchases:** none


### RTDensity

[App page](https://appshunter.io/ios/app/rtdensity/id6738932143)

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

**In-app purchases:** none


## Frequently asked questions

### Is Site Stabilization Calculator free?

Site Stabilization Calculator is free to download, with no in-app purchases.

### Is RTDensity free?

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

### Do Site Stabilization Calculator or RTDensity have ads?

Site Stabilization Calculator shows ads; RTDensity does not.

### Which is updated more often, Site Stabilization Calculator or RTDensity?

Site Stabilization Calculator ships an update every 12 months, and RTDensity every 5 months. Most recently, Site Stabilization Calculator was updated on September 27, 2026 and RTDensity on October 24, 2026.

---

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