# Contractor Calculator - SumPro — feet inch calculator, foot

> Construction jobsite calculator for measurements, planning, and material estimation. (iPhone/iPad app by Lxmob LLC.)

- Source: https://appshunter.io/ios/app/contractor-calculator-sumpro/id6764114412 (this page in markdown: same URL + `.md`)
- Developer: [Lxmob LLC](https://appshunter.io/developer/1895287124)
- Category: Business, Utilities
- Price: Free with in-app purchases
- Rating: 4.40/5 from 56 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 45 MB
- Languages: American English
- Released: 2026-05-09
- Data updated: 2026-10-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/contractor-calculator-sumpro/id6764114412/reviews.md

## What is Contractor Calculator?

Construction Calculator is a fast jobsite calculator built for contractors, carpenters, builders, remodelers, estimators, and DIY projects.

Handle everyday construction math without switching between spreadsheets, notes, and manual formulas. Calculate feet, inches, fractions, metric conversions, stairs, rafters, roofing, concrete, framing, finishes, masonry, site materials, and basic bid markup from one clean app.

Key features:

• Feet, inches, fractions, yards, and metric conversions
• Pitch, rise, run, diagonal, hip/valley, jack rafter, rake wall, and board feet tools
• Stair layout with riser count, riser height, tread count, total run, and angle
• Advanced triangle, circle, and arc calculators
• Roofing estimates with pitch, waste, squares, and bundle counts
• Wall stud, drywall, flooring, paint, block wall, fence post, gravel, and mulch calculators
• Concrete slab, footing, and post hole volume calculators
• Material count rounding settings
• Regional presets for units, currency, and common defaults
• Saved tape for keeping important results
• Copy, paste, share, memory, and theme options

Construction Calculator helps speed up common field math for measuring, planning, estimating, and checking quantities before ordering materials or making cuts.

Use it for framing layouts, stair planning, roof math, concrete ordering, finish material estimates, site work, and quick job cost checks.

Calculations are intended as helpful estimates. Always verify measurements, local building codes, engineering requirements, and supplier specifications before cutting, ordering, or building.

Unlimited option available
Construction Calculator offers an auto-renewing yearly with a 3-day free trial and monthly subscription. Payment will be charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage and cancel your subscription in your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable.

Terms of Use: https://lxmob.com/terms-of-use

Privacy Policy: https://lxmob.com/privacy-policy

## Key features

- Feet, inches, fractions, and metric conversions
- Rafter, stair, and roofing calculators
- Concrete and material volume estimation
- Bid markup calculations
- Regional unit and currency presets
- Saved tape for results

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Construction Cal PRO | $39.99 | per year |
| Construction Cal PRO | $7.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Construction Cal PRO | $49.99 | one-time |



## Frequently asked questions about Contractor Calculator

### What types of calculations can Contractor Calculator perform?

Contractor Calculator handles a wide range of construction math, including feet/inch/fraction conversions, rafter and stair layout, roofing estimates, concrete volumes, and basic bid markups. It's designed to cover everyday jobsite math needs.

### Is Contractor Calculator suitable for DIY projects?

Yes, the app is built for both professionals and DIY projects. It simplifies complex calculations for tasks like framing, remodeling, and material estimation, making it accessible for anyone working on home improvement.

### Does Contractor Calculator offer regional settings?

Yes, Contractor Calculator includes regional presets for units, currency, and common defaults. This allows users to customize the app to their specific location and project requirements.

### How does the subscription work for Contractor Calculator?

Contractor Calculator offers an unlimited option through a yearly subscription with a 3-day free trial, or a monthly subscription. Payments are charged to your Apple ID, and subscriptions auto-renew unless canceled at least 24 hours before the current period ends.

### What is the rating and user feedback for Contractor Calculator?

Contractor Calculator has a strong rating of 4.4 stars from 56 ratings. This suggests a generally positive user sentiment regarding its functionality and usefulness for construction calculations.

### On which devices can I use Contractor Calculator?

Contractor Calculator is supported on iPhones and iPads. Its design is optimized for these Apple mobile devices, ensuring a good user experience.

### How often is Contractor Calculator updated?

The app was last updated on October 1, 2026, with version 1.2. This indicates a recent update, suggesting ongoing development and maintenance by the developer.

### What is the age rating for Contractor Calculator?

Contractor Calculator has an age rating of 4+. This means it is considered appropriate for users aged 4 and older, indicating no mature or sensitive content.

## Version history (last 3 releases)

### 1.2 — 2026-10-01

Construction Calculator is now SumPro.

Same fast construction math, new name. This update also includes:

• A refreshed name across the app, home screen, and sharing
• Faster startup, especially on weak jobsite connections
• More reliable access to your Pro features right after launch
• Performance improvements and bug fixes

Thanks for building with SumPro. If it saves you time on the job, a quick rating helps other contractors find it.

### 1.1 — 2026-09-17

- Bugs Fixed

### 1.0 — 2026-05-09

No release notes.

## Apps similar to Contractor Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Cost Estimator - Construction+](https://appshunter.io/ios/app/cost-estimator-construction-plus/id6758105341) | 4.6 (348) | Free | Business |
| [BluMatrix](https://appshunter.io/ios/app/blumatrix/id6773012691) | 5.0 (8) | Free | Business |
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| [HB Construction Estimate Maker](https://appshunter.io/ios/app/hb-construction-estimate-maker/id6758679791) | 4.7 (290) | Free | Business |
| [Concrete Buddy](https://appshunter.io/ios/app/concrete-buddy/id6751776964) | — | Free | Business |

## More apps by Lxmob LLC

- [DualCam - Dual Shot Recorder](https://appshunter.io/ios/app/dualcam-dual-shot-recorder/id6763375728)

All apps by Lxmob LLC: https://appshunter.io/developer/1895287124

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-10.*