What it is
KNTRCTR is subcontractor management software for heavy civil and general contractors. Prime contractors can post job dates, scope, requirements, and attachments once for invited crews, then compare and level bids while keeping each original bid visible. Rex AI can scan bids for outliers, missing answers, and past reviews, and read attachments before an award. It provides analysis but does not select the winning subcontractor; the award decision stays with the user. Invited bidders can open jobs, ask questions, and submit bids at no charge. After an award, a shared job workspace supports contacts, insurance, and a checklist. Performance reviews are double-blind until both parties submit them. KNTRCTR works alongside existing estimating and project management systems, but its focus is bid organization and subcontractor performance tracking—not estimating takeoffs, project scheduling, or cost control. It is available on the web. The first prime-contractor seat is $250 a month, billed monthly, with the first 30 days free; each additional seat is $50 a month.
Who it suits. KNTRCTR suits heavy civil and general contractors organizing bids from invited subcontractors and tracking their performance. Invited subcontractors can use the free bidder plan to ask questions and submit bids.
Good
- Posts job details and attachments for invited crews.
- Compares bids while keeping original bids visible.
- Invited bidders can submit bids for free.
- Workspace supports contacts, insurance, and shared checklist.
- Reviews are double-blind until both parties submit.
Watch for
- Focuses on bids and performance, not scheduling.
- Does not provide estimating takeoffs or cost control.
- Rex AI output may be incomplete, inaccurate, outdated, or misleading.
- First prime-contractor seat costs $250 a month.
Verdict
KNTRCTR centers on bid organization and subcontractor performance, leaving award decisions with the contractor. Its stated scope excludes takeoffs, scheduling, and cost control, so it is not a complete project-management system.
Plans and prices
| Plan | Price | Billed |
|---|---|---|
| Free Bidder | $0 | No charge to invited bidders. |
| Prime contractor — additional seat | $50 a month | Each extra person, monthly. |
| Prime contractor — first seat | $250 a month | Billed monthly; month to month, no annual contract. First 30 days free. |
From KNTRCTR's own pricing page, checked 30 Sept 2026. Every plan
What the maker publishes
- AI decision role
- Rex AI surfaces analysis but does not choose the winning subcontractor; the award decision stays with the user. source
- Bid comparison
- The platform lets contractors compare and level bids while keeping the original bid visible. source
- Bid requests
- Prime contractors can post job dates, scope, requirements, and attachments once for invited crews. source
- Company
- The terms identify Lexington Springs Holding Corp. as the operator of KNTRCTR. source
- Integrations
- The features page says KNTRCTR works alongside existing estimating tools and project management systems, without naming integrations. source
- Invited bidding
- Subcontractors invited to bid can open the job, ask questions, and submit a bid for free. source
- Job kickoff
- After award, the job workspace supports contacts, insurance, and a shared checklist. source
- Product
- KNTRCTR is subcontractor management software for heavy civil and general contractors. source
- Product limit
- KNTRCTR focuses on bid organization and subcontractor performance tracking, not estimating takeoffs, project scheduling, or cost control. source
- Reviews
- Performance reviews are double-blind until both sides submit them. source
- Rex AI
- Rex AI scans bids for outliers, missing answers, and past reviews, and can read attachments before an award. source
- REX limitation
- The terms describe REX as a beta decision-support feature whose AI output may be incomplete, inaccurate, outdated, or misleading. source
- Support contact
- The terms list [email protected] for questions about the terms. source
Review
KNTRCTR is subcontractor management software for heavy civil and general contractors. It is best suited to firms that want a shared process for inviting crews to bid and tracking their performance. Its value is strongest before and just after award, not across the full job lifecycle.
Overview
Prime contractors can send one bid request—with job dates, scope, requirements, and attachments—to invited crews. They can compare bids while retaining each original submission, and invited subcontractors can ask questions and bid without charge. After award, a shared workspace carries contacts, insurance, and a checklist into kickoff.
This gives estimating teams a more organized way to gather and assess subcontractor bids without replacing their existing estimating or project-management systems. The boundary matters: KNTRCTR does not handle takeoffs, scheduling, or cost control, so contractors needing those functions will need other software alongside it.
Key features
Bid review and Rex AI
Bid leveling keeps the original bids visible, a useful safeguard when comparing normalized submissions. Rex AI can flag outliers, missing answers, and past reviews, and read attachments before an award. It surfaces analysis rather than selecting the winner, leaving the decision with the contractor. Rex is a beta decision-support feature; its output may be incomplete, inaccurate, outdated, or misleading, so it should inform—not replace—human review.
Subcontractor follow-through
Double-blind performance reviews remain hidden until both sides submit, which can reduce the influence of seeing the other party’s review first. The post-award workspace supports contacts, insurance, and a shared checklist, keeping basic kickoff coordination connected to the award. KNTRCTR says it works alongside existing estimating and project-management systems, but does not name integrations.
Pricing
The Free Bidder plan costs 0.00 USD per free, with no charge to invited bidders. It lets subcontractors open invited jobs, ask questions, and submit bids—a practical entry point for crews responding to a prime contractor’s requests.
The Prime contractor — first seat plan is 250.00 USD per month, billed monthly, month to month with no annual contract; the first 30 days are free. It includes one seat and full access, including Rex AI. Each additional seat costs 50.00 USD per month and has the same access as the first. The listed user-seat limit is 1 users, so a team needing multiple prime-side users should account for the extra-seat charge.
The free access is for invited bidders, not a free prime-contractor seat. For a contractor who wants bid organization and performance tracking, the first seat is the relevant paid plan; firms seeking broader project controls will still need other tools.
Platforms
KNTRCTR is available on the web.
Who it's for
KNTRCTR is a good fit for heavy civil and general contractors that routinely invite subcontractors to bid and want bid comparison, post-award kickoff basics, and two-sided performance reviews in one workflow. It is less suitable as a standalone system for firms that need estimating takeoffs, project schedules, or cost control.
Pros and cons
- Pro: One request can reach invited crews with dates, scope, requirements, and attachments, reducing the need to distribute the same bid package separately.
- Pro: Original bids stay visible during comparison, while Rex can flag potential issues without taking the award decision away from the contractor.
- Pro: Invited subcontractors can bid for free, and both sides submit performance reviews before either review is revealed.
- Con: Prime access starts at 250.00 USD per month for one seat, with each additional seat costing 50.00 USD per month.
- Con: Rex is beta and may return unreliable output, while takeoffs, scheduling, and cost control are outside the product’s scope.
Alternatives
Bid management software is the broader category to explore when comparing bid-focused tools.
Choose PlanHub if a free general-contractor plan with project posting, bid management, and basic bid leveling suits your needs; estimation is a paid add-on. Consider BidDock for a web-based alternative with a free plan and paid tiers starting at 99.00 USD per month. Projectmates is a different option for teams seeking a dedicated private-cloud site license with 40 user licenses, priced at 39500.00 USD per year. BidNet Direct offers a free Basic plan for member-agency opportunities, browsing and submitting bids, and real-time bid matches. BidPlanroom is worth considering for a general-contractor plan priced at 149.00 USD per month with up to 3,000 subcontractors and unlimited employee users. Bidtracer is a paid alternative with mobile apps and access to all modules. SmartBid may suit firms seeking annual licensing, with invited subcontractors able to bid or prequalify at no cost. BuildTools Bidding is aimed at custom home builders and remodelers, with a starting package at 499.00 USD per month on a 12-month commitment.
Verdict
Choose KNTRCTR if your priority is organizing subcontractor bids and carrying performance tracking into kickoff, while keeping award decisions in your hands. Look elsewhere—or pair it with other systems—if you need takeoffs, scheduling, cost control, or more than one prime-side seat without added monthly cost.