# Construction Calculator SumPro — Stair, Roofing, Concrete Sq Ft

> Jobsite calculator for construction math, measurements, and material estimates. (iPhone/iPad app by Lxmob LLC.)

- Source: https://appshunter.io/ios/app/construction-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 152 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 46 MB
- Languages: American English
- Released: 2026-05-09
- Data updated: 2026-10-31
- Monetization: free with in-app purchases

## What is Construction Calculator SumPro?

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, metric conversions
- Stair layout and rafter calculations
- Roofing estimates and material counts
- Concrete volume calculators
- Material count rounding
- Regional presets

## 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 | $89.99 | one-time |


## Is Construction Calculator SumPro safe?

Construction Calculator SumPro appears safe based on user ratings. The AppsHunter Safety Score for Construction Calculator SumPro is 86 out of 100. This assessment is based on 152 user ratings, with an App Store average of 4.4 out of 5. Of 152 App Store ratings, 85.5% point to a safe experience, 2.0% suggest some concerns, and 12.5% point to a risky experience.

## Is Construction Calculator SumPro legit?

Construction Calculator SumPro appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Construction Calculator SumPro is 63 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about Construction Calculator SumPro

### What types of calculations can SumPro perform?

SumPro handles a wide range of construction calculations including feet, inches, fractions, metric conversions, stair layouts, rafter angles, roofing estimates, concrete volumes, and material counts. It is designed to cover everyday jobsite math needs.

### Is SumPro suitable for beginners or only professionals?

SumPro is built for professionals like contractors and builders, but also caters to DIY projects. Its comprehensive features can assist anyone needing to perform construction math, from framing to finish work.

### How does the subscription for SumPro work?

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

### Can I manage my SumPro subscription?

Yes, you can manage and cancel your SumPro subscription in your App Store account settings after purchase. The subscription automatically renews unless canceled at least 24 hours prior to the end of the current billing cycle.

### What devices is SumPro available on?

SumPro is available on iPhone and iPad devices. It is designed to provide a convenient calculation tool across these Apple platforms.

### How often is SumPro updated?

The latest version of SumPro is 1.2.3, and it was last updated on October 30, 2026. This indicates a recent update, suggesting ongoing development and support.

### What is the age rating for SumPro?

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

### Does SumPro have ads?

No, SumPro does not contain advertisements. As it is free with in-app purchases, users can expect an ad-free experience while using the core functionalities.

## Version history (last 5 releases)

### 1.2.3 — 2026-10-30

• SumPro now speaks your language, with support for many more languages and regions.
• Calculations are faster and more reliable across every tool.
• Bug fixes and performance improvements.

### 1.2.2 — 2026-10-10

SumPro just got sharper.

• Faster feet, inch and fraction entry
• Instant unit conversion for areas and volumes
• One-tap rafter and roof triangle recall
• Nominal lumber sizes for board feet
• Refined rafter and stair tools
• Full metric support in advanced tools

Plus performance improvements and polish throughout. 
Enjoying Contractor Calculator SumPro? A quick rating helps other builders find us.

### 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.

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## 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 2026-10-31.*