Six Sigma Green Belt Tutor
DMAIC, Lean & Statistics
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
2,000+ original DMAIC, Lean & statistics questions with timed mocks, flashcards, and a readiness score. Paid app — purchase required.
Six Sigma Green Belt Prep is the focused way to study for your Lean Six Sigma Green Belt certification exam. Master the full DMAIC method — Define, Measure, Analyze, Improve, and Control — plus Lean fundamentals and the statistics every Green Belt needs.
A one-time purchase or subscription is required to use the app. There is no free tier. Unlock everything with a subscription (monthly or yearly) or a single lifetime purchase.
WHAT YOU GET
- 2,000+ original practice questions across all five DMAIC phases, Lean, and statistics
- Every answer has a detailed rationale that shows the reasoning or the full calculation
- Full-length timed mock exams with realistic phase weighting and pacing
- Quick practice, practice-by-phase, and weak-area drills built from your misses
- Flashcards with spaced repetition so the right cards come back at the right time
- A readiness score, per-phase mastery, accuracy trend, streak, and exam countdown
- Deep statistics coverage: DPMO, sigma level, Cp/Cpk, hypothesis tests, correlation, regression, and control-chart limits — worked step by step
- Works fully offline. No ads, no analytics, no account, no data collection
BUILT FOR THE EXAM
Content is organized the way Green Belt exams are: the five phases of DMAIC, Lean tools like 5S, value stream mapping, kanban and takt time, and the descriptive and inferential statistics that show up on every test. An Exam Info section explains the format and links to the official certifying bodies.
WHO IT'S FOR
Candidates preparing for ASQ CSSGB, IASSC ICGB, and employer or training-provider Green Belt exams, and anyone who wants a serious, structured refresher on Lean Six Sigma.
This app is independent study material. It is not affiliated with, endorsed by, or certified by ASQ, IASSC, or any other certifying body. All questions are original and are not real exam questions.
Privacy Policy: https://joykhansayan1.github.io/six-sigma-green-belt-prep/privacy.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Support: https://joykhansayan1.github.io/six-sigma-green-belt-prep/support.html
Ratings & Reviews
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The developer, MD Shahariar Nazim Joy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- MD Shahariar Nazim Joy
- Size
- 3 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime Access $99.99
- Annual Access $49.99
- Monthly Access $9.99
- Copyright
- © 2026 MD Shahariar Nazim Joy