Question 1

What is a P80 price?

Accepted Answer

It's the fixed fee at which 80% of simulated outcomes finish on or under budget. Quote it and you have an 80% chance of delivering profitably, with a clear, defensible confidence level.

Question 2

Do I need to be a statistician to use it?

Accepted Answer

No. You estimate tasks the way you already do and grade their complexity from 1 to 5. Projectrus handles the simulation and gives you plain-language numbers to quote. On a paid plan it goes further, learning your team's personal bias level over time and compensating for it automatically on future projects.

Question 3

Is it really free to start?

Accepted Answer

Yes. The free tier gives you one active project with the full Monte Carlo simulation. You only need to upgrade when you want multiple concurrent projects or team features.

Question 4

What is Monte Carlo simulation?

Accepted Answer

It's a technique that runs thousands of randomized trials to model uncertainty. Projectrus samples each task's plausible hours 10,000 times and combines them, producing a full distribution of possible project totals instead of a single estimate.

Question 5

How do complexity grades affect the result?

Accepted Answer

Higher-complexity tasks are modeled with wider, more right-skewed distributions, reflecting their greater potential to overrun. A grade-5 task contributes far more uncertainty to the total than a grade-1 task with the same base hours.

Question 6

Why should I quote the P80 instead of the P50?

Accepted Answer

The P50 is the median, so you'd go over budget roughly half the time. The P80 builds in a buffer for the ways projects run long, so you have an 80% chance of delivering on budget while still pricing competitively.

Question 7

Does the simulation run on your servers?

Accepted Answer

No. The Monte Carlo simulation runs entirely in your browser, so results are instant and your estimates never leave your device to be computed.

Question 8

Is the free tier really free forever?

Accepted Answer

Yes. The free tier gives you one active project with the full Monte Carlo simulation, P50/P80/P95 pricing, a cost-driver breakdown, and live budget-risk tracking at no cost. PDF export is a Professional feature.

Question 9

Can I switch between monthly and annual billing?

Accepted Answer

Yes. You can change your billing cadence at any time from the in-app billing settings. Annual billing saves roughly 17% versus paying monthly.

Question 10

What happens when I hit the free tier project limit?

Accepted Answer

The free tier supports one active project at a time. When you need to run projects in parallel, upgrade to Professional for unlimited active projects and team collaboration.

Question 11

Do I need a credit card to start?

Accepted Answer

No. You can sign up and use the free tier without entering any payment details.

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