
Houzz
Houzz Pro
Buildxact
PlanSwift
Joist
STACK Takeoff Estimating
Handoff AI
CostLogic is a browser-based workspace for construction takeoffs, estimates, and invoices. Onyx, the built-in AI agent, helps you move faster while you stay in control.

Deno
Full-stack Javascript Components for one-dev armies
Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | costlogic.co | nullstack.app |
| Pricing | ||
| Company | Startup from the United States · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


CostLogic is a browser-based construction platform for takeoffs, estimating, job costing, and invoicing. With Onyx, its built-in AI agent, CostLogic supports the complete workflow from blueprint to invoice while keeping measurements, calculations, and decisions visible for review. Users can...
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What each product offers, as listed by its team.


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As answered by people managing CostLogic and Nullstack.
CostLogic's answer
CostLogic is built using modern web, cloud, payment, and AI technologies.
CostLogic's answer
CostLogic connects construction takeoffs, estimating, and invoicing in one browser-based workflow. Onyx can take action across the job while keeping quantities, calculations, and decisions visible for review.
CostLogic's answer
CostLogic lets you measure real plans, price the work, and get paid without exporting data or retyping quantities between tools. It combines hands-on controls with practical AI assistance at a more accessible price than traditional takeoff platforms.
CostLogic's answer
CostLogic is built for contractors, estimators, builders, and small construction teams that work from PDF plans. It is especially useful for teams seeking modern browser-based software and AI assistance without sacrificing control over measurements or pricing.
CostLogic's answer
We built CostLogic after seeing construction teams forced to choose between slow legacy software and thin AI tools that could make costly mistakes. CostLogic offers a practical third path where Onyx handles routine work while builders review every important measurement, calculation, and decision.
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