Now on iPhone, iPad & Mac

Every Quality Control Tool You Need, In One App

18 professional Lean & Six Sigma tools — from Fishbone diagrams to FMEA to Pareto charts. Built for quality engineers, plant managers, and continuous improvement teams.

 iPhone & iPad  Mac 🔝 100% Offline 📑 PDF Export
Download on App Store Explore All 18 Tools
18
Professional Tools
6
Tool Categories
iPhone+Mac
Universal Apple App
PDF
Export Every Report
Tool Library

The Complete Kaizen Toolkit

Every tool for structured problem-solving, process improvement, and statistical analysis — works offline on any Apple device.

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Problem Definition & Root Cause
Structure the problem before you solve it

5W1H Analysis

Structured What / Why / Where / When / Who / How problem definition to frame any issue precisely.

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5 Why Analysis

Drill from symptom to root cause by asking "Why?" up to five times. Simple, powerful, and fast.

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Ishikawa / Fishbone

Cause & Effect diagram across the 6M categories: Man, Machine, Method, Material, Measurement, Mother Nature.

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Is / Is Not Analysis

Compare what the problem IS vs. IS NOT across key dimensions to eliminate false leads and sharpen focus.

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Improvement Process
Structured frameworks to drive corrective action
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8D Report

Eight-Discipline corrective-action report D0–D8 — the gold standard for automotive and manufacturing quality.

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A3 Report

One-pager: background, current state, target, analysis, countermeasures, plan, and follow-up.

PDCA Cycle

Plan → Do → Check → Act improvement cycle tracker to close the loop on every improvement initiative.

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Risk & Prevention
Catch failures before they reach the customer

FMEA

Failure Mode & Effects Analysis with Severity × Occurrence × Detection (RPN) to prioritize your highest risks.

Poka-Yoke Checklist

Error-proofing checklist with category, mechanism, and verification — eliminate human error at the source.

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Process Mapping
Visualize your process from end to end

SIPOC

Suppliers / Inputs / Process / Outputs / Customers — a high-level process map on a single page.

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CTQ Tree

Critical-to-Quality tree: customer need → quality driver → measurable requirement.

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Observation & Data Collection
Go to the gemba — gather real-world data

Check Sheet

Tally-style data collection with running totals. Fast on the shop floor, exports clean PDF.

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Gemba Walk Log

Structured shop-floor observation log with findings and actions. Capture issues where they happen.

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Affinity Diagram

Group brainstormed notes into themed clusters to surface patterns in qualitative data.

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Statistical Analysis
Turn raw data into actionable insight
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Pareto Chart

80/20 defect ranking with cumulative percentage — see which few causes drive most problems.

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Histogram

Frequency distribution with auto-binned data. See the shape of your process variation instantly.

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Control Chart

X̄ / R chart with control limits to detect process drift and out-of-control signals in real time.

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Scatter Diagram

Plot two variables to assess correlation — confirm whether a suspected root cause drives the effect.

Built for the Factory Floor, Not the Boardroom

Designed to be fast, intuitive, and useful where quality problems actually happen.

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Fully Offline

No internet needed. Use it on the shop floor, in remote facilities, or anywhere — all 18 tools available anytime.

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PDF Export

Every tool generates a clean, professional PDF you can share with management, email to suppliers, or archive for audits.

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iPhone, iPad & Mac

One purchase covers every Apple device. Use it on the floor on iPhone, at your desk on iPad, in reports on your Mac.

Fast to Complete

Forms are built for speed. Fill out a 5 Why in under two minutes or a complete 8D in one sitting.

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Organised by Category

Tools grouped by purpose — root cause, improvement, risk, process mapping, data, statistics — right tool, right away.

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Your Data Stays Yours

No accounts, no cloud servers, no tracking. All reports live on your device. Optionally sync via your own iCloud.

Get the App

Available on the App Store

Join quality engineers and continuous improvement teams using Kaizen Lean Toolkit to solve real problems, faster.

Download on the App Store

iPhone • iPad • Mac