PullCalc vs GRoof Internal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PullCalc
This app assists electricians and contractors in estimating the pull force required for installing electrical cables in conduit. Users input details for each leg of the conduit run, including wire size, conduit ID, and bend angles, to generate an approximate pull force calculation.
- Estimate pull force for cable installation
- Input data by conduit legs
- Supports various input parameters (wire size, conduit ID, bends)
- Includes coefficient of friction guidance
- Provides suggested friction coefficients for lubricated cable
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Greenlee continues to drive efficiency with PullCalc, an app that helps electricians and contractors approximate the pull force needed to install an electrical cable inside of conduit. Data is entered by "legs" and each leg is considered to be a straight run of conduit followed by a bend, except the last leg, which usually has no bend. The calculation for each leg requires the following information to be entered: - Wire size - Number of wires - Conduit I.D. - Duct Material - Material of the Cable Insulation - Coefficent of Friction* - Length of Leg - Bend angle - Vertical Rise *Due to unknown factors involved, it prohibits giving exact results, most notably the coefficient of friction. Lubrication, surface texture, and lay of the cable are never uniform along the length of a conduit run. Comparing the known forces of pulls against the estimated force should give you a guide as for a good coefficient of friction to use for similar future pulls, and a table with some suggested starting points for the coefficient of friction of well-lubricated cable is a drop down option in the app. If lubricant is not used, triple the values in the table.
GRoof Internal
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Introducing GRoof’s work-smart application designed to optimize solar rooftop projects and internal team's workflow from start to finish. Enhance team collaboration, boost efficiency, and ensure better customers’ experiences by seamlessly simplifying on-site data collection and uploading while staying focused on task completion. Elevate your workflow with our secure and task-oriented solution.
Screenshots
Verdict
The clearest difference is update cadence: PullCalc at every 2 months against GRoof Internal's every 8 months. PullCalc also leads on device support. GRoof Internal's advantage is iOS requirement (12.1 vs 16.6). On price and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PullCalc ships an update every 2 months, GRoof Internal every 8 months. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.
| Parameter | PullCalc | GRoof Internal |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | No | — |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | — |
| Requires iOS | 16.6 | 12.1 — better |
| Further details — not scored | ||
| Size | 21 MB | 116 MB |
| Age rating | 4+ | 17+ |
| Developer | GREENLEE TOOLS, INC | Gunkul Engineering Public Company Limited |
In-app purchases
PullCalc
No in-app purchases
GRoof Internal
No in-app purchases
Questions
Is PullCalc free?
Is GRoof Internal free?
Which is updated more often, PullCalc or GRoof Internal?
Other comparisons
