# Propeller Mobile vs RPM Squared

The clearest difference is update cadence: Propeller Mobile at every 2 weeks against RPM Squared's every 6 months. RPM Squared's advantage is iOS requirement (12.0 vs 16.1). On price, ads, 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.

Propeller Mobile ships an update every 2 weeks, RPM Squared every 6 months. The most recent releases landed on October 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Propeller Mobile | RPM Squared |
| --- | --- | --- |
| 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 | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 215 MB | 31 MB |
| Requires iOS | 16.1 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Propeller Aerobotics Pty Ltd](https://appshunter.io/developer/1077083929) | [Cornell Pump Company](https://appshunter.io/developer/879210510) |

## What reviewers say

### 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


### RPM Squared

[App page](https://appshunter.io/ios/app/rpm-squared/id6480077164)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Propeller Mobile free?

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

### Is RPM Squared free?

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

### Do Propeller Mobile or RPM Squared have ads?

Neither Propeller Mobile nor RPM Squared shows ads.

### Which is updated more often, Propeller Mobile or RPM Squared?

Propeller Mobile ships an update every 2 weeks, and RPM Squared every 6 months. Most recently, Propeller Mobile was updated on October 1, 2026 and RPM Squared on September 23, 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.*