Reliability Pro

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Everyone
10+
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Everyone
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About this app

Reliability Pro is a professional toolkit for reliability, quality, and maintenance engineers — putting a full suite of analysis calculators and live sensor diagnostics in your pocket.

CORE RELIABILITY TOOLS
- Weibull analysis solver for life-data and failure-rate modeling
- Availability & MTBF/MTTR calculator
- FMEA with automatic RPN scoring
- Reliability Block Diagram (RBD) builder
- Distribution identification
- Process capability (Cp/Cpk) analysis
- Linear regression
- Reliability growth modeling
- Monte Carlo reliability simulation

QUALITY & ROOT-CAUSE
- 5 Whys root-cause guide
- Failure modes reference library
- Quality standards reference

ON-DEVICE SENSOR DIAGNOSTICS
- Barometric pressure / leak-decay diagnostics
- Vibration spectrum (FFT) analyzer
- Acoustic / sound-level diagnostics
- Shock and impact measurement
All sensor readings are processed locally on your device.

WHO IT'S FOR
Reliability engineers, quality professionals, maintenance and asset-management teams, and engineering students who need fast, field-ready calculations and diagnostics.

A core set of tools is free. A subscription unlocks the full premium suite, with a free trial to start.
Reliability engineering toolkit: Weibull, MTBF, FMEA, RBD &sensor diagnostics
Updated on
Sep 13, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info and Financial info
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Version 1.17.0

- Degradation Analysis: choose your own fit model from a ranked list (R²/AICc), just like Fit Nonlinear Curves, with a new 3-sample worked example.
- Weibull & Lognormal Solvers now open with 20-point example datasets; Lognormal gets the same side-by-side layout as Weibull.
- DOE Workbench and Gage R&R redesigned as side-by-side Plan | Analyze with ready-to-run data.
- Distribution Analyzer simplified to a single column.
- More tools compute instantly as you type.
Content rating
Everyone
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App support

About the developer
ILLAYATHAMBI KUNADIAN
victor.kunadian@gmail.com
84 Van Cott Ct San Jose, CA 95127-2867 United States