# Site Stabilization Calculator vs Propeller Mobile

The clearest difference is ads: Propeller Mobile at none against Site Stabilization Calculator's shown. Propeller Mobile also leads on update cadence (every 2 weeks vs every 12 months) and monetization model (free vs ad-supported). Site Stabilization Calculator's advantage is review sentiment (50% vs 40%). 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, Propeller Mobile every 2 weeks. The most recent releases landed on September 27, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Site Stabilization Calculator | Propeller Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (10 ratings)](https://appshunter.io/ios/app/propeller-mobile-3d-mapping/id1644272004/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | **50.0% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 2 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 20 MB | 215 MB |
| Requires iOS | **15.1** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TYJA Enterprises Corporation](https://appshunter.io/developer/1626166382) | [Propeller Aerobotics Pty Ltd](https://appshunter.io/developer/1077083929) |

## 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


### Propeller Mobile

[App page](https://appshunter.io/ios/app/propeller-mobile-3d-mapping/id1644272004)

This app provides field crews with a mobile 3D site inspection tool. It enables real-time navigation, site checks, and data capture to facilitate faster decision-making and keep projects on track.

**Highlights:** Live navigation, 3D site mapping, Media documentation, Grade checking, Cut-fill analysis, Surface area measurement, Stockpile volumes

**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 Propeller Mobile free?

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

### Do Site Stabilization Calculator or Propeller Mobile have ads?

Site Stabilization Calculator shows ads; Propeller Mobile does not.

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

Site Stabilization Calculator ships an update every 12 months, and Propeller Mobile every 2 weeks. Most recently, Site Stabilization Calculator was updated on September 27, 2026 and Propeller Mobile on October 1, 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.*