# Construct QC vs Propeller Mobile

Construct QC and Propeller Mobile are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.3 for Construct QC against 4.2 for Propeller Mobile. Both are backed by a comparable volume of ratings — 11 and 10 respectively.

Construct QC ships an update every 8 days, Propeller Mobile every 2 weeks. The most recent releases landed on September 20, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Construct QC | Propeller Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (11 ratings)](https://appshunter.io/ios/app/construct-qc/id1552435031/reviews)** | [4.2 (10 ratings)](https://appshunter.io/ios/app/propeller-mobile-3d-mapping/id1644272004/reviews) |
| Number of ratings | **11** | 10 |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 87 MB | 215 MB |
| Requires iOS | **15.5** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Terabase Energy, Inc.](https://appshunter.io/developer/1533446710) | [Propeller Aerobotics Pty Ltd](https://appshunter.io/developer/1077083929) |

## What reviewers say

### Construct QC

[App page](https://appshunter.io/ios/app/construct-qc/id1552435031)

This app streamlines quality control for utility-scale solar construction projects. It digitizes inspections, manages punchlists, and allows issue identification using drone imagery, even in remote locations with limited connectivity.

**Highlights:** Digital punchlist management, Geolocated observations, Drone imagery analysis, Photo evidence for remediation, Offline functionality, Team collaboration

**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 Construct QC free?

Construct QC 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, Construct QC or Propeller Mobile?

Construct QC is rated higher. Construct QC averages 4.3 out of 5 from 11 ratings, while Propeller Mobile averages 4.2 from 10 ratings.

### Do Construct QC or Propeller Mobile have ads?

Neither Construct QC nor Propeller Mobile shows ads.

### Which is updated more often, Construct QC or Propeller Mobile?

Construct QC ships an update every 8 days, and Propeller Mobile every 2 weeks. Most recently, Construct QC was updated on September 20, 2026 and Propeller Mobile on October 1, 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.*