# Pile Driving vs Propeller Mobile

The clearest difference is price: Propeller Mobile at Free against Pile Driving's $34.99. Propeller Mobile also leads on rating (3.8 vs 2.8) and update cadence (every 2 weeks vs every 13 months). Pile Driving's advantage is iOS requirement (8.1 vs 16.1). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Propeller Mobile is free to download; Pile Driving costs $34.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Propeller Mobile holds the better App Store score, 3.8 against 2.8. Both are backed by a comparable volume of ratings — 16 and 10 respectively. Written reviews point the same way: 20% of Pile Driving's written reviews are positive against 33% of Propeller Mobile's.

Pile Driving ships an update every 13 months, Propeller Mobile every 2 weeks. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Pile Driving | Propeller Mobile |
| --- | --- | --- |
| Price | $34.99 | **Free** |
| Rating | [2.8 (16 ratings)](https://appshunter.io/ios/app/pile-driving/id847675665/reviews) | **[3.8 (10 ratings)](https://appshunter.io/ios/app/propeller-mobile-3d-mapping/id1644272004/reviews)** |
| Number of ratings | **16** | 10 |
| Positive reviews | 20.0% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 weeks** |
| Monetization | Paid | **Free** |
| Size | 28 MB | 215 MB |
| Requires iOS | **8.1** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Klasen Industries](https://appshunter.io/developer/847675668) | [Propeller Aerobotics Pty Ltd](https://appshunter.io/developer/1077083929) |

## What reviewers say

### Pile Driving

[App page](https://appshunter.io/ios/app/pile-driving/id847675665)

This utility app calculates pile driver stroke height from sound, logging real-time data like blow count and moving averages. It's designed for engineers, contractors, and inspectors to eliminate guesswork in pile driving operations.

**Highlights:** Instant stroke height calculation from sound, Real-time log of stroke height and blow count, Calculates moving averages of stroke height, Mark button for test pile tracking, Saves and emails logged data, Adjustable sensitivity bar

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

**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 Pile Driving free?

Pile Driving costs $34.99, with no in-app purchases.

### Is Propeller Mobile free?

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

### Which has better reviews, Pile Driving or Propeller Mobile?

Propeller Mobile is rated higher. Pile Driving averages 2.8 out of 5 from 16 ratings, while Propeller Mobile averages 3.8 from 10 ratings.

### Do Pile Driving or Propeller Mobile have ads?

Neither Pile Driving nor Propeller Mobile shows ads.

### Which is updated more often, Pile Driving or Propeller Mobile?

Pile Driving ships an update every 13 months, and Propeller Mobile every 2 weeks. Most recently, Pile Driving was updated on October 11, 2026 and Propeller Mobile on October 17, 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.*