Simple, transparent pricing

Start free.
Scale when you're ready.

ReliaStats Designer is free — design and explore interrupt distributions without signing up. Upgrade to ReliaStats for automated fitting, Interrupt Viewer, and Interrupt Comparison.

All plans are per-user · Annual billing · Tax applied at checkout

ChiAha
ReliaStats Designer
$0
/ user
forever
Free account required · No credit card needed
Create Free Account
What's included
  • ✓ Interrupt Designer — TTF + TTR pair visualization
  • ✓ State timeline over configurable shift window
  • ✓ Box-and-whisker percentile view (p5–p95)
  • ✓ All 8 ReliaSim distribution types
  • ✓ PDF, CDF, and Survival function views
  • ✓ Availability % computation
  • ✓ Runs entirely in your browser — no account needed
Most Popular
ChiAha
ReliaStats
$68
/ user
/ month
$816/user/year · Billed annually · Node-locked license · Tax applied at checkout
Buy Now
Everything in Designer, plus
  • ✓ Interrupt Viewer — browse any ReliaSim interrupt file
  • ✓ Interrupt Comparison — diff two interrupt files side by side
  • ◎ Import raw failure & repair event logs
  • ◎ Automatic cause group identification
  • ◎ Automated distribution fitting to all 8 types
  • ◎ Goodness-of-fit tests (Kolmogorov-Smirnov, Anderson-Darling)
  • ◎ Distribution ranking and model selection
  • ◎ Export fitted CSV directly for ReliaSim import
  • ◎ Phone and dedicated support
🔒 Privacy-first cloud fitting. Distribution fitting runs server-side on anonymized numeric values only. Interrupt names, descriptions, and any contextual identifiers are never transmitted to our servers.

All plans include

🔒 Data never leaves your machine — no server uploads
🌐 Works in any modern browser — no install required
📦 Single self-contained HTML file
🔄 Annual updates while subscription is active

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Free Fitting
Visualization & Design
Interrupt Designer TTF + TTR pair with shift timeline and box-and-whisker ✓ ✓
All 8 distribution types Weibull, LogNormal, Normal, Exponential, Uniform, Triangular, Johnson SU, Fixed ✓ ✓
PDF, CDF & Survival curves ✓ ✓
Availability % computation From Mean TTF and Mean TTR ✓ ✓
Review & Comparison
Interrupt Viewer Browse and visualize any ReliaSim CSV ✓ ✓
Interrupt Comparison Diff two CSVs with color-coded severity and Δ% column ✓ ✓
Distribution Fitting Coming Soon
Import raw event logs Historian data, failure and repair timestamps — Coming
Automated distribution fitting Fits all 8 types and ranks by goodness-of-fit — Coming
Goodness-of-fit tests Kolmogorov-Smirnov and Anderson-Darling — Coming
Export fitted CSV for ReliaSim — Coming
License & Support
License type Free account Node-locked, per user
Billing Free Annual
Support Community Phone & dedicated messaging

Need purchase orders, volume licensing, or custom enterprise pricing?

Contact us →
ReliaSim

ReliaSim — Production Decision Intelligence

Click-connect production modeler. Build, simulate, validate, and experiment — desktop software, no integration required.

🍎
ReliaSim Mac
Apple Silicon M1+
$8,000
per user / year
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🪟
ReliaSim Windows
Windows 11
$8,000
per user / year
Buy Now

Node-locked · Annual subscription · Phone & cloud support included

Frequently asked questions

What does "Free account required" mean for the free plan?
The browser tools are freely available. Creating an account lets us keep you updated on new features and the next release, and gates access to future cloud-based capabilities. No credit card is needed.
What is ReliaStats replacing?
ReliaStats is the evolution of Wishbone — ChiAha's original distribution fitting tool. It automates the expert-intensive process of converting raw historian event data into parameterized TTF and TTR distributions ready for ReliaSim.
How does ReliaStats compare to JMP?
JMP is a general-purpose statistical tool priced at thousands of dollars per year for broad enterprise use. ReliaStats is purpose-built for reliability engineers working specifically with ReliaSim — it understands the interrupt model, outputs ReliaSim-ready CSVs, and at $68/user/month (billed annually) costs a fraction of general-purpose alternatives.
Is my data safe?
Yes. ReliaStats Designer runs entirely in your browser — no data is ever uploaded to any server. Paid features will maintain a data privacy first approach. In any case where external computing power is leveraged, you will be notified beforehand.
What does "node-locked" mean?
A node-locked license is tied to a single machine. If you need to move to a different machine, contact us. For team licensing, see enterprise pricing.
When is ReliaStats available?
Distribution fitting features are in active development. Purchase now to lock in the launch price and receive access as features are released. Existing subscribers will get updates throughout their subscription year.