Riskquarry: Delivery Odds
Monte Carlo Project Forecast
$0.99 · Designed for iPad. Not verified for macOS.
A seeded Monte Carlo schedule-risk simulator on one fast screen: model dependent tasks with three-point estimates and see the real odds of hitting a delivery date.
Riskquarry is a seeded Monte Carlo schedule-risk simulator that runs entirely on one fast screen. It models a worked example project — five dependent tasks with three-point (optimistic / likely / pessimistic) estimates and correlated work — and runs thousands of simulations to show honest completion odds instead of a single optimistic sum.
Read the result at a glance: P50, P80, and P95 confidence dates, the mean, a histogram of every simulated finish with a P80 marker, and a sensitivity chart ranking which tasks drive the most uncertainty. Tasks that share staff or a vendor slip together in each run, so the spread reflects real correlated risk. Adjust the run count from 500 to 10,000 and reseed to see how stable the forecast is.
FEATURES
• Seeded, reproducible Monte Carlo engine — thousands of runs
• Triangular three-point task estimates
• Dependency-aware critical-path finish per run
• Correlated task groups that slip together
• P50 / P80 / P95 confidence dates and mean
• Completion histogram with a P80 marker
• Risk-sensitivity chart ranking variance drivers
PREMIUM BY DESIGN
One-time purchase. No account, no ads, no analytics, no tracking, no in-app purchases, and no network access — Riskquarry runs entirely on your device, fully offline.
Riskquarry simulates the entered triangular estimates and does not predict the future. Dependencies, scope changes, staffing, and unknown work can dominate real outcomes — communicate ranges, not guarantees.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Riskquarry 1.1 is a focused redesign. The app now opens directly into a single fast schedule-risk screen: P50/P80/P95 completion dates, the full distribution histogram with a P80 marker, and a sensitivity ranking of the biggest variance drivers, all from thousands of seeded Monte Carlo runs. Unused assets were removed to shrink the download.
The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Robert Corbin
- Size
- 2.8 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Robert Corbin
