What On-Screen Takeoff is

On-Screen Takeoff, or OST, is the takeoff product of On Center Software, which brands itself “On Center Software by ConstructConnect”, the same parent company as PlanSwift. It’s a Windows desktop application built on point, click and drag measurement for any trade. Its patented Multi-Condition tool is described by the company as capturing “multiple trades in one pass”, a drawing-version overlay marks removals in red and additions in blue, and Quick Bid connects “directly to your On-Screen Takeoff quantities” for estimating.

Automation is the 2026 pitch. Takeoff Boost makes a first AI pass over an uploaded plan, and On Center is direct about where that stands today, saying the feature is “strongest today for interior-focused workflows, especially walls and ceilings / drywall and painting” and that “AI takeoff should be treated as a faster starting point, not a blind final answer”. Both products automate the reading, so the real question is how many trades you need covered and how much detail you need on any one of them.

Source: On-Screen Takeoff’s own site. We describe competitors from their public positioning and avoid guessing at features or pricing.

Choose On-Screen Takeoff if

You bid several trades off the same plan set. Multi-Condition takeoff exists to capture them in one pass, and the vendor lists concrete, walls and ceilings, flooring, mechanical and roofing among the trades it serves. One to Many serves none of those.
Revisions and addenda are what hurt. The red-and-blue overlay for spotting what changed between drawing sets is mature, well-understood tooling, and On Center points it straight at last-minute addenda before bid day.
You want the takeoff wired into estimating and into the field. Quantities feed Quick Bid for pricing, and Digital Production Control follows labor against that budget once the job is won. One to Many stops at the quote.

Choose One to Many if

Counting the openings is the easy half of a fenestration quote. One to Many reads what actually sets the price, including type, size, operation, handing, glazing and egress, and reconciles the window schedule against the elevations rather than handing back a count of doors and windows.
What comes out is a configured quote priced from your own catalog and rules, ready to send instead of ready to re-key into an estimating database.

When not to use One to Many

Anything you bid beyond windows and doors, whether that is walls, ceilings, concrete or flooring. One to Many covers none of it, and On Center’s AI is currently tuned for those interior trades specifically. If fenestration is one scope inside a general estimate, stay with OST.

How to decide

Ask what your estimator does once the software stops counting. If the next move is the next trade, breadth wins and OST is the safer buy. If the next move is working out which unit each opening really is and what it costs from your catalog, that second step is the entire product here.

Reviewed: August 2026.