# Bad Elf Flex vs Proceq GPR Subsurface

The clearest difference is rating: Proceq GPR Subsurface at 5.0 against Bad Elf Flex's 3.6. Proceq GPR Subsurface also leads on review sentiment (50% vs 40%). Bad Elf Flex's advantage is monetization model (free vs free with in-app purchases) and ratings volume (14 vs 3). On price, update cadence, ads and in-app purchases 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 3.6. Both are backed by a comparable volume of ratings — 14 and 3 respectively. Written reviews point the same way: 40% of Bad Elf Flex's written reviews are positive against 50% of Proceq GPR Subsurface's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Bad Elf Flex | Proceq GPR Subsurface |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (14 ratings)](https://appshunter.io/ios/app/bad-elf-flex/id1486378497/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/proceq-gpr-subsurface/id1524783895/reviews)** |
| Number of ratings | **14** | 3 |
| Positive reviews | 40.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 32 MB | 1.1 GB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bad Elf, LLC.](https://appshunter.io/developer/391764721) | [Screening Eagle Technologies](https://appshunter.io/developer/1515215362) |

## What reviewers say

### Bad Elf Flex

[App page](https://appshunter.io/ios/app/bad-elf-flex/id1486378497)

This utility app enhances the functionality of Bad Elf Flex and Flex Mini GNSS receivers. It allows users to monitor hardware health, adjust settings, and update firmware. For the Flex model, it also enables the purchase and application of tokens for advanced features and correction sources like SBAS and RTK.

**Highlights:** Monitor GNSS receiver health, Change hardware settings, Perform firmware updates, Purchase and load Flex Tokens, Enable hardware-based features, Access correction sources

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Bad Elf Flex free?

Bad Elf Flex is free to download, with no in-app purchases.

### Is Proceq GPR Subsurface free?

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

### Which has better reviews, Bad Elf Flex or Proceq GPR Subsurface?

Proceq GPR Subsurface is rated higher. Bad Elf Flex averages 3.6 out of 5 from 14 ratings, while Proceq GPR Subsurface averages 5.0 from 3 ratings.

### Do Bad Elf Flex or Proceq GPR Subsurface have ads?

Neither Bad Elf Flex nor Proceq GPR Subsurface shows ads.

### Which is updated more often, Bad Elf Flex or Proceq GPR Subsurface?

Bad Elf Flex ships an update every 3 months, and Proceq GPR Subsurface every 3 months. Most recently, Bad Elf Flex was updated on September 9, 2026 and Proceq GPR Subsurface on September 15, 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.*