# Proceq GPR Subsurface vs Ironworker Pro

Proceq GPR Subsurface and Ironworker Pro both sit at 5.0 stars, but that hides the real split: 100% of Ironworker Pro's written reviews are positive against 50% of Proceq GPR Subsurface's. Ironworker Pro also leads on update cadence (daily vs every 3 months) and chart position (#191 vs unranked). Proceq GPR Subsurface's advantage is price (Free vs $2.99) and iOS requirement (16.0 vs 26.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Proceq GPR Subsurface is free to download; Ironworker Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Proceq GPR Subsurface against 5.0 for Ironworker Pro. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews are what separate them: 50% of Proceq GPR Subsurface's written reviews are positive against 100% of Ironworker Pro's.

Proceq GPR Subsurface ships an update every 3 months, Ironworker Pro daily. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Proceq GPR Subsurface | Ironworker Pro |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/proceq-gpr-subsurface/id1524783895/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/ironworker-pro/id6775681910/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#191** |
| Size | 1.1 GB | 3 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Screening Eagle Technologies](https://appshunter.io/developer/1515215362) | [Antonio Pebworth](https://appshunter.io/developer/6775265446) |

## 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


### Ironworker Pro

[App page](https://appshunter.io/ios/app/ironworker-pro/id6775681910)

**Currently charting:** #191 Top Paid · Utilities (US App Store)

This offline field reference app provides welders, ironworkers, and fabricators with essential tools. It includes weld symbols, rigging calculations, construction calculators, steel guides, and a job log with a timesheet, all designed for use without a signal.

**Highlights:** Weld symbols and settings, Rigging load limits and angle calculator, Construction and tape measure guide, Steel materials and cutting guides, Job log with photos and hours tracker, Offline functionality

**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 Ironworker Pro free?

Ironworker Pro costs $2.99, with no in-app purchases.

### Which has better reviews, Proceq GPR Subsurface or Ironworker Pro?

Proceq GPR Subsurface and Ironworker Pro are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.

### Do Proceq GPR Subsurface or Ironworker Pro have ads?

Neither Proceq GPR Subsurface nor Ironworker Pro shows ads.

### Which is updated more often, Proceq GPR Subsurface or Ironworker Pro?

Proceq GPR Subsurface ships an update every 3 months, and Ironworker Pro daily. Most recently, Proceq GPR Subsurface was updated on September 15, 2026 and Ironworker Pro on September 21, 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.*