160 apps · Windows and your browser
Software for the job in hand.
Takeoff, estimating, site records, safety, quotes and invoices - plus a few things for when the work's done. Free or free to try, no account needed, and your data stays on your PC.
Earthworks
Cut and fill, site levels and mass haul
Print Imposition
Booklets, signatures and n-up, imposed for press
Sprinkler Design
Lay out, calculate and price sprinkler systems
Programme Studio
Construction programmes in your browser, scheduled like P6, with P6 and MS Project files. Free for up to 50 activities.


Site diaries, safety, plant, snags and job costs.


Takeoff, BOQs, BIM and quantity calculators.


Quotes, invoices, cash, staff and compliance.


PDFs, notes, images and handy PC utilities.



Moving, travel, collections, games and calm.
Find the right tool by where you are on the job - designing it, pricing it, planning it, building it or getting paid.
Construction apps →
Free IFC viewer in English, French and German: floor plans on screen, a quantity check, model tree and properties, colour by property, two models together and BCF issues with sections. BIM Explorer Pro adds quantity takeoff to a BOQ linked to the model, IDS checks with a UK check pack, clash checks and storey plans to PDF.
Day, week, timeline, month and agenda views with projects, time tracking and a site diary. Calendar Pro adds reminders, a year view, timesheets and invoices, and backups.

123 apps open in your browser - no install, no sign-up. Here are eight to start with.
Calendar
A calendar for projects and working weeks
Open in browser
Brick & Block Calculator
Bricks, blocks and mortar for a whole job
Open in browser
Concrete Volume Calculator
Concrete for slabs, footings and columns
Open in browser
VAT & Sales Tax Calculator
Add or remove VAT in one click
Open in browser
Home Radius Visualiser
Draw walk, cycle and drive rings round an address
Open in browser
Markdown Editor
A three-pane Markdown editor that works offline
Open in browser
Meal Plan Calendar
Plan the week's meals and get the shopping list
Open in browser
Kingside Chess
Chess against a real engine, in 2D or 3D
Open in browser
Card games, cue sports, the night sky and a few quiet minutes. The Lamplight games →
No cloud account to set up. Your projects live where you saved them.
Independently certified, and the Windows apps come through the Microsoft Store.
78 apps are free. The rest have a free trial and a one-off price.