Comparison

Construct QC vs Propeller Mobile

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Construct QC

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
Read full description

Construct QC (companion app for Terabase Construct) is the ultimate QC tool for utility-scale solar construction, designed to simplify inspections, improve accuracy, and enhance collaboration across teams. Say goodbye to paperwork and hello to a fully digital QC workflow optimized for solar, wind, and BESS projects. Key Features: Geolocate yourself on the map and link observations directly to project components for unmatched precision Create and manage a single punchlist within the app, providing a centralized source of truth for all stakeholders Identify issues using drone imagery directly in your web browser, spotting problems that may be harder to detect from the ground Close out punchlist issues with photo evidence of completed remediation activities, ensuring a smooth transition to commissioning Maintain full functionality even at remote sites with limited connectivity

About

Propeller Mobile

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
Read full description

Propeller Mobile is a 3D site inspection app built to keep field crews connected, aligned, and in control. With your job site in your pocket, Propeller Mobile supports real-time navigation, site checks, and reality capture, empowering faster decisions and keeping projects on track. Propeller Mobile also works alongside your AeroPoint hardware, keeping your ground control workflow connected. More than just a map, Propeller Mobile connects every person on-site to the data they need - enabling teams to move faster, collaborate smarter, and drive results. Why Propeller Mobile? • Stay aligned, wherever you are: Turn your mobile device into a powerful site inspection tool to help you map your next move • Eliminate bottle necks: Verify, document, and adjust plans directly from the field to prevent delays and unnecessary office trips • Keep your projects on track: From live navigation to high-accuracy measurements, you’ll translate field data and designs into decisions Key features: • Live navigation: Instantly see your real-time position relative to designs and site features • 3D site mapping: Explore a digital twin of your site in 3D or 2D for informed decision-making • Media documentation: Pin images and 360° photos to the map to document conditions and share with office teams • Alignments: Measure and track your live position along alignments and stations/chainages • Grade checking: Assess grades as degrees, percentages, or ratios • Cut-fill analysis: Compare surfaces to monitor volume changes and progress over time • Point of interest tagging: Drop points to check elevations or add notes for clarity • Surface area measurement: Quickly calculate areas within any shape • Stockpile volumes: Measure stockpile volumes and create reports in seconds • Cross-section analysis: Generate cross-section charts of designs and surveys • Distance measurement: Measure point-to-point distances with precision • Elevation tracking: Monitor elevation changes and height differences • AeroPoint management: Connect to AeroPoint 2 devices via Bluetooth to monitor battery, charging status, firmware, and data upload progress - and configure custom WiFi credentials for seamless field uploads

Screenshots

Construct QC4 screens
Propeller Mobile4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

ScorecardNo meaningful differences
Construct QC versus Propeller Mobile: the parameters behind the verdict, then further details
ParameterConstruct QCPropeller Mobile
PriceFreeFree
Rating4.3 (11 ratings) — better4.2 (10 ratings)
Positive reviews—40.0% of reviews
Number of ratings11 — better10
Update frequencyEvery 8 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better16.1
Further details — not scored
Size87 MB215 MB
Age rating4+4+
DeveloperTerabase Energy, Inc.Propeller Aerobotics Pty Ltd

Customer experience

Construct QC

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%

Propeller Mobile

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

In-app purchases

None

Construct QC

No in-app purchases

None

Propeller Mobile

No in-app purchases

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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