Comparison · Bid and cost estimating software
BidVariance vs Buildxact: which is better in 2026?
BidVariance78.0#5 in best bid and cost estimating softwareBuildxact84.5#3 in best bid and cost estimating softwareBuildxact ranks higher in our list of bid and cost estimating software (#3 against #5, score 84.5 against 78.0).
- 78.0Editorial score84.5
- 1Platforms1
- YesFree to useNo
- NoOpen sourceNo
Which should you choose?
Choose BidVariance if you want
Fixed-price bids that need a loss probability.
Monte Carlo cost simulation that shows the probability of loss at a bid, with one-time paid licenses and free calculators. It models effort ranges rather than measured quantities, so the results depend on the ranges entered.
Choose Buildxact if you want
Residential builders needing estimates and job tools.
Cloud estimating, digital takeoffs, purchase orders and cost tracking for residential builders, with Blu AI assistants as add-ons. Plans are monthly or annual, and annual billing needs a 12-month commitment.
The main differences
- BidVariance can be used for free; Buildxact requires payment.
Side by side
| BidVariance* | Buildxact | |
|---|---|---|
| Score | 78.0 | 84.5 |
| Rank in list | #5 of 10 | #3 of 10 |
| Price | Free plan, paid upgradesFree calculators; one-time licenses from $129 (Pro), $249 and $399 | SubscriptionMonthly or annual plans; 14-day free trial; add-ons cost extra |
| Free to use | Yes | No |
| Open source | No | No |
| Platforms | WebWeb | WebWeb |
| Made by | Not stated | Buildxact |
| Digital takeoff from drawings | No | Yes |
| Monte Carlo simulation | Yes | No |
| Main users | Fixed-price project bids | Residential builders |
| Best for | Fixed-price bids that need a loss probability | Residential builders needing estimates and job tools |
| Strengths |
|
|
| Limits |
|
|
| Links | Visit site | Visit site |
Questions about BidVariance vs Buildxact
- Is Buildxact better than BidVariance?
- Buildxact ranks higher in our list of bid and cost estimating software (#3 against #5, score 84.5 against 78.0). BidVariance* is best for: fixed-price bids that need a loss probability. Buildxact is best for: residential builders needing estimates and job tools.
- Which is cheaper, BidVariance or Buildxact?
- BidVariance*: Free calculators; one-time licenses from $129 (Pro), $249 and $399. Buildxact: Monthly or annual plans; 14-day free trial; add-ons cost extra.
- Do BidVariance and Buildxact run on the same platforms?
- BidVariance* supports Web. Buildxact supports Web.
Choosing between the two
Learning Center
1:17How to decide between two good optionsSettle a close call by sorting it by how hard it is to undo, setting a deadline, scoring the criteria as a tie-breaker and writing down why you chose.
1:20How to compare products fairly: what to keep in mindDefine the job, cap the must-haves, compare like with like, count total cost over one period and weigh the criteria. Includes a worked example.Read more about BidVariance and Buildxact
All articles- Guides · 5 min readHow to choose bid and cost estimating softwareChoose bid and cost estimating software by job, trade, platform and pricing. Compare PlanSwift, BuildingConnected, Buildxact, STACK and BidVariance.
- Explainers · 5 min readMonte Carlo bid estimating: what P50, P80 and P90 meanMonte Carlo simulation for bid estimators: model cost ranges, read P50, P80 and P90 and the chance of meeting a price, with a worked example and common mistakes.
Made by, or connected to, the publisher of this site or people the publisher works with. Listed on the same criteria as everything else, with the lift described in How we rank and Disclosure.