140 apps · Windows and your browser
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.


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 - pricing it, planning it, building it or getting paid.
Construction apps →
Open any IFC model to explore its tree and properties, section it and measure it. BIM Explorer Pro adds quantity takeoff and a BOQ linked to the model.
Day, week, month, timeline and agenda views with projects and time tracking. Calendar Pro adds reminders, planners, themes and an AI assistant.

They open in your browser - no install, no sign-up.
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.
No cloud account to set up. Your projects live where you saved them.
Independently certified, and the Windows apps come through the Microsoft Store.
51 apps are free. The rest have a free trial and a one-off price - never a subscription.