Concrete Calculator: Jobsite

Concrete Calculator for Pros

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

The Swiss army knife of the jobsite: the app tradespeople and DIYers were waiting for. 76 pro calculations across 10 modules, client quote PDF mode, Project mode for your jobsites. All in one app, 100% offline, in 6 languages. Designed in France for masons, roofers, tilers, electricians, plumbers, plasterers and serious DIYers tired of stray sheets and calculations scribbled on the back of a cement bag. GET IT RIGHT, FIRST TIME Enter your dimensions, get the exact result in seconds. All formulas are based on industry-standard professional norms (DTU, NF, NF C 15-100, with equivalents to IBC, BS, DIN). No more headaches with roof truss trig, soil bulking, or cable voltage drop. Blok does it for you. YOUR JOBSITES, FINALLY ORGANIZED The Project mode groups all calculations from a jobsite in one place: roof estimating, concrete dosing, paint surface, cable length. You find every number in two taps and compare two variants in three. SEND YOUR QUOTE WITHOUT LEAVING THE JOBSITE Turn your calculations into a real professional client quote: • Header with your logo, company name, registration number and VAT. • Sequential numbering compliant with legal requirements (FR/DE/ES/IT/PT/UK). • Line items: unit price (excl. VAT), subtotal, VAT, total, notes and conditions. • Export PDF sendable by email, WhatsApp or AirDrop in one tap. THE 10 PRO MODULES MASONRY: Concrete dosing, cement bags, slab, blocks, mortar, screed, strip footing, formed wall, stairs. PLASTERING: Drywall, screws, joint tape, rails and studs, thermal R-value, U-value of multilayer walls. TILING: Tiles per sqm, glue, grout, baseboards, floating floor, vinyl flooring, diagonal layout. PAINTING: Wall surface (with openings), ceiling, quantity, primer, wood varnish. ROOFING: Slope, rafter length, 2 or 4 pitched roof area, tiles, battens, frame, gutters and downspouts. ELECTRICAL: Ohm's law, single and three-phase power, cable section, voltage drop, sockets per circuit per electrical code. PLUMBING: Water heater volume, pipe diameter, PVC drain slope, radiator power, boiler, head loss. EARTHWORKS: Excavation volume, soil bulking, material tonnage, number of truckloads, drainage slope. GEOMETRY: Areas, volumes, Pythagoras and 3-4-5 squaring, trigonometry, rule of three. CONVERSIONS: Length, area, volume, mass, temperature, pressure, energy. OFFLINE AND PRIVATE BY DESIGN Everything works without an internet connection: Blok runs in a basement just as well as in the middle of nowhere. Your calculations, projects and quotes never leave your iPhone. No account to create, no cloud, no third-party tracker. Available in French, English, Spanish, German, Italian and Portuguese. DISCLAIMER Results provided by Blok are indicative. They do not replace industry standards (DTU, NF, EN, DIN, IBC, BS) nor the advice of a structural engineering firm. The user remains responsible for implementation. Blok offers optional in-app purchases to unlock all features. Any subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period, and can be managed at any time from your Apple account. Terms of Use: https://blok.devolim.fr/en/legal/terms.html Privacy: https://blok.devolim.fr/en/legal/privacy.html Support: contact.blok@devolim.fr Blok is published by DEVOLIM (BAUGEY MATHEO), a French sole trader. SIREN 948 000 757, Bordeaux RCS.

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• New, more reliable billing engine • Explainer screen before the ad tracking request • Redesigned settings with clearer selectors • Fixed price display (local currency everywhere) • Full update of internal components

Version 1.2.0

The developer, Devolim, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • BAUGEY MATHEO JAMES MORGAN
Size
  • 67.9 MB
Category
  • Utilities
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
Languages
English and 5 more
  • English, French, German, Italian, Portuguese, Spanish
Age Rating
4+
In-App Purchases
Yes
  • Blok Pro Lifetime $29.99
  • Blok Pro Yearly $17.99
  • Blok Pro Monthly $2.99
  • Learn More
Copyright
  • © 2026 DEVOLIM
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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