# Proceq GPR Subsurface vs Propeller Mobile

The clearest difference is rating: Proceq GPR Subsurface at 5.0 against Propeller Mobile's 4.2. Proceq GPR Subsurface also leads on review sentiment (50% vs 40%). Propeller Mobile's advantage is update cadence (every 2 weeks vs every 3 months) and monetization model (free vs free with in-app purchases). 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.

Proceq GPR Subsurface holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 3 and 10 respectively. Written reviews point the same way: 50% of Proceq GPR Subsurface's written reviews are positive against 40% of Propeller Mobile's.

Proceq GPR Subsurface ships an update every 3 months, Propeller Mobile every 2 weeks. The most recent releases landed on September 15, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Proceq GPR Subsurface | Propeller Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/proceq-gpr-subsurface/id1524783895/reviews)** | [4.2 (10 ratings)](https://appshunter.io/ios/app/propeller-mobile-3d-mapping/id1644272004/reviews) |
| Number of ratings | 3 | **10** |
| Positive reviews | **50.0% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 1.1 GB | 214 MB |
| Requires iOS | **16.0** | 16.1 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Screening Eagle Technologies](https://appshunter.io/developer/1515215362) | [Propeller Aerobotics Pty Ltd](https://appshunter.io/developer/1077083929) |

## What reviewers say

### Proceq GPR Subsurface

[App page](https://appshunter.io/ios/app/proceq-gpr-subsurface/id1524783895)

This application uses radar technology to create detailed 3D images of underground structures. It helps detect utilities, verify as-built maps, and perform structural investigations with intuitive on-site analysis and cloud collaboration features.

**Highlights:** Subsurface 3D imaging, Utility line detection, As-built map verification, Real-time Augmented Reality visualization, On-site data annotation, Cloud-based collaboration and export

**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 Proceq GPR Subsurface free?

Proceq GPR Subsurface is free to download, with no in-app purchases.

### Is Propeller Mobile free?

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

### Which has better reviews, Proceq GPR Subsurface or Propeller Mobile?

Proceq GPR Subsurface is rated higher. Proceq GPR Subsurface averages 5.0 out of 5 from 3 ratings, while Propeller Mobile averages 4.2 from 10 ratings.

### Do Proceq GPR Subsurface or Propeller Mobile have ads?

Neither Proceq GPR Subsurface nor Propeller Mobile shows ads.

### Which is updated more often, Proceq GPR Subsurface or Propeller Mobile?

Proceq GPR Subsurface ships an update every 3 months, and Propeller Mobile every 2 weeks. Most recently, Proceq GPR Subsurface was updated on September 15, 2026 and Propeller Mobile on September 13, 2026.

---

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