# Reliability Pro — Reliability & Quality toolkit

> Mobile toolkit for reliability, quality, and statistics analysis with 75+ professional tools. (iPhone/iPad app by Illayathambi Kunadian.)

- Source: https://appshunter.io/ios/app/reliability-pro/id6782085318 (this page in markdown: same URL + `.md`)
- Developer: [Illayathambi Kunadian](https://appshunter.io/developer/6782085321)
- Category: Productivity, Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 73 MB
- Languages: American English
- Released: 2026-06-27
- Data updated: 2026-08-13
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/reliability-pro/id6782085318/reviews.md

## What is Reliability Pro?

Reliability Pro is a complete reliability, quality, and design-engineering workbench in your pocket — 140+ professional tools that normally live in expensive desktop software, ready in seconds.
A problem that takes an hour on a desktop takes seconds here.

CORE CAPABILITIES
Life data analysis — Weibull and lognormal fitting, censoring, confidence bounds
Accelerated life testing — Arrhenius, Coffin-Manson, and Power Law
System modeling — reliability block diagrams, fault trees, and event trees
Failure analysis — FMEA, FMECA, and FRACAS
Statistics & DOE — ANOVA, regression, and design of experiments
Quality & SPC — control charts, process capability, Gage R&R, acceptance sampling
Monte Carlo simulation
Live sensor diagnostics — vibration, acoustic, shock, and motion

NEW — 2D FIELD SOLVERS
Screen a real design, not just a formula. Interactive physics-of-failure solvers that map the field and carry the result straight into a life model:
Thermal CFD — the hot spot on a board under airflow
Thermal Cycling — solder-joint fatigue from the temperature swing
Moisture Ingress — popcorn-cracking risk over floor time
Current-Density Field — electromigration from current crowding
Enclosure Convection — hot pockets in a sealed box
Forced-Air Cooling — airflow dead zones on a board
Liquid Cold-Plate — junction temperature and coolant rise
Galvanic Corrosion — penetration rate for dissimilar-metal joints

DESIGN FOR RELIABILITY
37 design-stage calculators, each framed by the failure mechanism it prevents — not just the equation it solves:
Fluids & flow — pipe pressure drop, NPSH margin and cavitation, valve sizing, water-hammer surge, acoustic-induced vibration, vortex shedding, two-phase slug loading, parallel flow distribution
Mechanical & structural — bolted-joint preload, beam deflection, column buckling, Mohr's circle, tolerance stack-up
Electrical & PCB — trace width, wire voltage drop, RC/RLC damping, battery runtime, creepage and clearance, component derating
Thermal — junction temperature, heat-sink sizing, transient response, heat exchangers, fin efficiency, dew point
Chemical & materials — corrosion rate, galvanic compatibility, MSL floor life
Optical & photonics — fibre link budget, LED lumen maintenance, illuminance design

WHO IT'S FOR
Reliability, quality, maintenance, and design engineers; Six Sigma practitioners; students; and anyone who needs trustworthy results fast.

WHAT YOU GET
140+ tools spanning reliability, quality, statistics, engineering design, and diagnostics
Basic Statistics tools are free for everyone; preview any premium tool once before signing in
A built-in AI assistant and search to jump straight to the right tool
Step-by-step video tutorials
A reference library with theory, worked examples, key equations, and citations for every tool
Import data, run the analysis, and export a professional engineering report — a polished PDF with theory, key equations, a worked example, results, charts, and references — or plain text/copy
Methods drawn from textbook formulas and published standards, with assumptions and limitations stated in every tool

SUBSCRIPTION
Full access to all tools is available via an auto-renewing subscription (monthly or annual). Payment is charged to your Apple Account at confirmation of purchase. Your subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Account settings.
Privacy Policy: https://victorkunadian-web.github.io/privacy/
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- 75+ reliability, quality, and statistics tools
- AI assistant for tool discovery
- Step-by-step video tutorials
- Reference library with theory and formulas
- Data import and export (PDF, text)
- Verified tools against industry standards

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Reliability Pro Monthly | $14.99 | per month |
| Reliability Pro Annual | $99.99 | per year |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/reliability-pro/id6782085318/reviews.md

### 5/5 — Excellent App - Easy to Use and Dependable!

*2026-06-27*

Reliability Pro has been a fantastic app! It’s easy to use, intuitive, and has helped make everything much more organized and efficient. I appreciate how reliable and user-friendly it is, and it has saved me both time and frustration. Highly recommend it to anyone looking for a dependable app that delivers exactly what it promises!

## Frequently asked questions about Reliability Pro

### What is Reliability Pro?

Reliability Pro is a mobile application that provides over 75 professional tools for reliability, quality, and statistics analysis. It aims to bring complex desktop software functionalities to your pocket for quick and efficient work.

### What types of analysis can I perform with Reliability Pro?

You can perform Weibull and lognormal life-data analysis, accelerated life testing, system modeling with Reliability Block Diagrams, FMEA, SPC control charts, process capability analysis, and Monte Carlo simulations, among many others.

### Does Reliability Pro have ads?

No, Reliability Pro does not contain advertisements. The application is ad-free, allowing for an uninterrupted user experience.

### How does Reliability Pro compare to desktop software?

Reliability Pro is built for speed, performing tasks that might take an hour on desktop software in mere seconds. It offers a comprehensive suite of tools typically found in expensive desktop applications.

### What are the subscription options for Reliability Pro?

Full access to all tools is available via an auto-renewing subscription. You can choose between a monthly plan for $14.99 or an annual plan for $99.99, both offering a 14-day free trial.

### How can I cancel my Reliability Pro subscription?

You can manage or cancel your subscription at any time by going to your Account settings. Cancellations must be made at least 24 hours before the end of the current subscription period to avoid renewal.

### What devices is Reliability Pro available on?

Reliability Pro is currently supported on iPhone and iPod devices. The app is rated for ages 4 and up.

### Can I export my analysis results from Reliability Pro?

Yes, you can import data, run your analysis, and export the results in PDF and text formats, or simply copy them. This allows for easy sharing and integration into other reports or workflows.

## Version history (last 5 releases)

### 1.12.0 — 2026-08-11

- Professional PDF reports: export any tool as a polished engineering report — theory, key equations, a worked example using your own data, results, charts, and references.
- Fixed garbled math symbols in exported and printed reports.
- Basic Statistics tools are now free for everyone (Confidence & Tolerance Intervals, Normality Tester, Data Normalizer, Probability Stats, Graph Builder, Time Series).
- New data normalization (Log, Ln, √, Box–Cox) in the interval and normality tools.
- Try premium tools with a free preview before signing in.
- Stability and performance improvements.

### 1.11.0 — 2026-08-10

- Try before you sign in — preview every premium tool once, free.
- Basic Statistics is now free for everyone: Confidence & Tolerance Intervals, Normality Tester, Data Normalizer, Probability Stats, Graph Builder, Time Series.
- New data normalization (Log, Ln, √, Box–Cox) built into the interval and normality tools.
- Confidence Interval now opens in raw-data entry mode.
- Save, open and share your project files.
- Stability and performance improvements.

### 1.0.10 — 2026-08-04

This release is a big usability and analysis upgrade:

• Cleaner data entry everywhere — spreadsheet-style tables with CSV/Excel import and downloadable templates across the analysis tools, so you can see the exact column layout before you load a file.
• New Data Normalizer — reshape and rescale a column (standardize, min–max, log, Box–Cox, or unit conversion) before it goes into the stats.
• DOE Workbench — plan a full or fractional design and analyze the responses in one place, with per-factor variable levels.
• Gage R&R Workbench — plan the study, then validate the measured data in one flow.
• Graph Builder — new group/color-by, box plots, histograms, and a scatter fit line with R².
• New Paris' Law crack-growth tool.
• Redesigned Confidence Interval with a raw-data / summary-stats toggle.
• Reorganized statistics into Basic and Advanced sections for easier navigation.
• Faster, more reliable startup and general stability fixes.

Thanks for the feedback — keep it coming.

### 1.0.9 — 2026-08-01

NEW — 2D field solvers in Design for Reliability. Each maps a failure mechanism and links it straight to a life model:

• Moisture Ingress — how moisture diffuses into a package and when popcorn-cracking risk crosses the line
• Thermal Cycling Field — solder-joint fatigue from the temperature swing a board sees
• Current-Density Field — electromigration from current crowding at a neck or void
• Enclosure Convection — how heat pools in a sealed chassis
• Forced-Air Cooling — where airflow reaches, and the dead zones it misses
• Galvanic Corrosion — penetration rate and time-to-perforate for dissimilar-metal joints
• Liquid Cold-Plate — coolant outlet rise, peak junction temperature and thermal resistance

Each includes an interactive field view, a pass/caution/fail verdict, a bridge into a reliability model, and a PDF report — plus a matching theory card with equations and references.

Also in this release: stability improvements across the simulation tools so extreme inputs always produce sensible, bounded results.

### 1.0.8 — 2026-07-20

Design for Reliability — a new category of 28 engineering design calculators.

Rather than generic engineering maths, each tool is built around the failure mechanism it prevents, so the output tells you what will break and why:

FLUIDS & FLOW
Pipe pressure drop, NPSH margin, valve Cv, tank drain, plus new flow-induced failure screening — water hammer surge, acoustic-induced vibration, vortex shedding lock-in, two-phase slug loading and parallel flow distribution.

MECHANICAL & STRUCTURAL
Bolted joint preload, beam deflection, column buckling, Mohr's circle, tolerance stack-up.

ELECTRICAL & PCB
Trace width, wire voltage drop, RC/RLC damping, battery runtime, creepage and clearance.

THERMAL
Transient thermal response, heat exchanger sizing, fin efficiency — now alongside the existing thermal and derating tools in a single place.

CHEMICAL & MATERIALS
Corrosion rate, galvanic compatibility, MSL floor life.

OPTICAL & PHOTONICS
Fibre link budget, LED lumen maintenance, illuminance design.

ALSO IN THIS RELEASE
- Discover expanded with theory, key equations, worked examples and references for every new tool
- Categories reorganised so nothing appears in two places
- Tool naming clarified to reflect what each one actually measures
- Assorted fixes and performance improvements

## Related topics

[reliability pro](https://appshunter.io/ios/topics/reliability-pro) · [reliability analysis](https://appshunter.io/ios/topics/reliability-analysis)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-13.*