ReliaSim® is downloadable desktop software, licensed per user each year. It doesn't depend on the cloud or need any integration. Your production data never leaves your network, and it works air-gapped for OT, defense and validated environments.
Start free
Three ways to use ReliaSim without paying anything. Most people should start here.
✓ Share models with the free demo, with no seat needed to view
✓ Converts to the free demo if the license lapses
Included with every license
✓ Full ReliaSim simulation engine
✓ Click-connect model builder
✓ Interrupt Designer
✓ Gain/Loss experimentation
✓ Multi-run analysis
✓ Bivariate validation
✓ Phone & cloud-based messaging support
✓ All updates during subscription
Tax is applied at checkout as required by state jurisdiction.
License is node-locked to a single machine. Contact us to transfer between machines.
Free Designer, paid fitting
ReliaStats® is ReliaSim’s companion for interrupt parameterization. It fits time-to-failure and time-to-repair distributions from your line event data and hands ReliaSim the parameters. Start free with the Designer, then add the desktop app for automated fitting and the Viewer, Comparison and Validation tools.
Mac and Windows desktop · per-user annual license · runs offline · what ReliaStats does
ReliaStats Designer
Free, no account or credit card needed
$0
per user, forever
✓ Interrupt Designer: a TTF and TTR pair with a shift timeline
Fitting runs inside the downloaded desktop app, with no cloud dependency, so your event data never leaves your computer.
Both plans keep your data on your machine, run offline for air-gapped sites, and get updates while the subscription is active.
Compare ReliaStats plans
Feature
Designer
ReliaStats
Visualization and design
Interrupt DesignerTTF and TTR pair with shift timeline and box-and-whisker
✓
✓
All 8 distribution typesWeibull, LogNormal, Normal, Exponential, Uniform, Triangular, Johnson SU, Fixed
✓
✓
PDF, CDF and survival curves
✓
✓
AvailabilityFrom mean TTF and mean TTR
✓
✓
Review and comparison
Interrupt ViewerBrowse any ReliaSim interrupt file
—
✓
Interrupt ComparisonTwo files side by side, every difference shown
—
✓
Interrupt ValidationSource vs simulated availability with PI and CI bands
—
✓
Distribution fitting
Import raw event logsHistorian data, failure and repair timestamps
—
✓
Automated distribution fittingFits all 8 types and ranks them by goodness of fit
—
✓
Goodness-of-fit testsKolmogorov-Smirnov and Anderson-Darling
—
✓
Export fitted CSV for ReliaSim
—
✓
License and support
License
None needed
Node-locked, per user
Billing
Free
Annual
Support
Community
Phone and dedicated messaging
ReliaStats questions
Do I need an account for the free Designer?
No. The Designer runs in your browser, or as a downloaded file, with no account and no credit card. Signing in with a free account adds the Interrupt Explorer and lets us tell you about new releases.
What is ReliaStats replacing?
ReliaStats is the evolution of Wishbone, ChiAha’s original distribution fitting tool. It automates the expert-heavy job of turning raw historian event data into TTF and TTR distributions ready for ReliaSim.
How does ReliaStats compare to JMP?
General-purpose statistical suites run about $1,300 to $1,900 or more per user per year. JMP starts around $1,320 a year and Minitab around $1,851. ReliaStats is built for reliability engineers working with ReliaSim. It understands the interrupt model and writes ReliaSim-ready CSVs, at $1,800 per user per year.
Is my data safe?
Yes. ReliaStats is desktop software that runs entirely on your own machine. Fitting and analysis happen inside the downloaded application, no event data is uploaded to any server, and it runs fully offline, so it suits OT and validated environments.
What does node-locked mean?
The license is tied to a single machine. If you need to move to a different machine, contact us. For team licensing, see Enterprise and purchase orders below.
Is ReliaStats available now?
Yes. It’s shipping today for Mac and Windows. A purchase includes the full fitting toolset, and subscribers get updates throughout their subscription year.
Coming soon: one model, from the network down to the machine
ReliaSim is becoming one product in four tiers. Each tier is a whole product, not a part you add to something else. Every tier does both manufacturing and supply chain simulation, and what changes is how deep it goes in each.
Not yet available to buy. Pricing will be announced at launch.
Basic
Both disciplines, any size, one interrupt deep.
Basic manufacturing and basic supply chain
No size limit, with as many nodes and sites as you like and every node type
One interrupt per constraint, simple failure behavior
A reduced experiment set
Resources assumed sufficient; no sourcing optimization or greenfield siting
Plant
Your plant at full resolution, with no cap on how much of it you model.
Unlimited interrupts per constraint, so a dozen named failure modes instead of one rolled-up failure
Finite resources, meaning the operators, tools and changeover crews the plant actually has
Flow and item nodes
The full experiment set, including gain/loss
Reliability structure per unit operation, fitted per failure mode
Supply Chain
Every site and the lanes between them, plus everything Basic assumes away.
Every site, and the lanes between them
Finite resources, meaning the trucks, bays and forklifts that move the product
Shipping and receiving at real resolution
Labor and cost accounting
Sourcing optimization by supplier, lane and volume
Greenfield analysis of where capacity should sit
Plant & Supply Chain
The full network toolkit pointed at a plant that fails the way yours does.
Sourcing decisions made against real failure behavior, not a per-SKU average
Finite resources, shipping and receiving, and cost accounting, all seeing your real plant model
Network → site → line → this machine, this interrupt, this day
AI / MCP add-on
Connect an assistant to your validated model. Goes on top of any tier.
MCP tools to inspect, simulate and analyze
Natural-language questions via Claude
Run scenarios conversationally
Works with any MCP-compatible AI
Runs against a local model (Gemma and others), so air-gapped sites stay air-gapped
Line event data fitting is ReliaStats, above, and goes on top of any tier. Robust optimization, which searches the solution space rather than scoring the plan you already chose, is quoted on a call. A supply chain study on your own network is scoped with you as a project; talk to us.
One list covers every tier and the AI add-on. Tell us which one interests you and we’ll let you know at launch, with no call needed.
You license modelers, not viewers
Anyone using the free demo can open and run a model built on a licensed seat. Send the file to a plant
manager, a controls engineer or a capital review board, and they can run the scenarios themselves without a license.
Your own license turns into that free demo if you ever stop subscribing, so the models you build stay usable either way.
What the license has been worth elsewhere
A bottling line finds $1.5M in hidden throughput by re-ranking two
failure modes its loss report calls equal. An olive plant recovers
15% more throughput with no new equipment.
A soap plant consolidation catches a configuration that would need a
$4M retrofit, in the model, before the plant is built.
Lunch & Learn sessions are one hour, live with an instructor, and $60 each. The six sessions cover the workflow from the discrete-rate worldview through to experiment design. Full in-person classes and on-site custom training are quoted directly. See the schedule →
Enterprise & Purchase Orders
Volume discounts apply from five licenses upward. Purchase orders, multi-user and site licensing are quoted directly, so contact the ChiAha team.
