Etienne Noumen

AI eBooks & Exam Guides

Plain-language certification guides with practice questions

Official exam outline guides for AWS Certified AI Practitioner (AIF-C01), Azure AI Fundamentals (AI-901), AWS Machine Learning (MLA-C01), Google Cloud ML Engineer, and the Model Context Protocol. Each guide includes original practice questions with detailed explanations and a two-week study plan.

• AWS, Azure & Google Cloud 2026 exam guides
• Model Context Protocol (MCP) & Agentic AI playbooks
• Available in PDF, EPUB, and on Google Play & Apple Books

Show Up And Play

Pickup games, sports leagues, and local events.

The easiest way to organize and join local amateur sports games. Whether you're looking for a quick pickup game of basketball, soccer, or tennis, Show Up And Play connects you instantly with players and games happening in your area.

I am not only a geek, I am also a huge sports fan and a passionate soccer dad. I still play actively and coach my kids' soccer teams. Alongside building the platform, I write about soccer and sports culture on my dedicated newsletter at showupandplay.substack.com.

• Find and join local pickup games
• Organize events and invite players
• Available on the web and iOS

iQz - Reasoning Puzzles

I built a puzzle app because I noticed I was getting worse at thinking.

Not dramatically. Just - I'd reach for a model before I'd reach for the problem. Draft the email, summarise the doc, sanity-check the logic. All reasonable. All things I used to do myself.

The puzzle in the video takes about five seconds. Count across each row: one, two, three. The shape stays constant down the row. So the missing tile is three pentagons.

That narrows it to two options, and this is the part I find interesting: most people pick the solid one. The count rule is satisfied, the brain files it as solved, and it stops looking. The correct tile is the outlined one - matching the row it belongs to. Find a rule that fits, stop checking. It's a small failure, and it's the same shape as the big one.

So I built iQz. 65 reasoning puzzles - matrices, sequences, number series, verbal analogies, logical deduction. Every answer explains the underlying rule rather than just showing you the letter, because the point isn't the score.

It's free, works fully offline, and has no ads and no account. I built it for my own commute.

Two honest caveats. It won't measure your IQ; that isn't what this is. And I'm well aware of the irony of shipping an app about unaided reasoning while running a company that builds AI study tools. Both things are true. The tools are useful, and the skill is worth keeping anyway.

• 65 reasoning and logic puzzles
• Fully offline and local
• Zero ads, no account required

Djamgatech

Certification prep that works on a plane

Practice exams for AWS, Azure, Google Cloud, CISSP, PMP, CFA and more - 34 tracks and nearly 2,000 questions bundled into the app. Every answer option is explained, not just the correct one, and the review queue drills only what you got wrong.

• 34 certification tracks
• 1,986 questions, fully offline
• No account, no subscription

AI & Machine Learning Tutor

41 AI certifications and 18 hands-on labs

The machine-learning sibling: AWS, Google Cloud, Azure, NVIDIA, Databricks, Claude and OpenAI certification banks, plus interactive labs where you sweep an activation function or watch a transformer decide what to attend to. All computed on-device.

• 41 certification banks
• 18 interactive ML labs
• 1,334 questions, all unlocked in PRO

DjamgaTech AI Tutor (RAG Chatbot)

Interactive Q&A for AWS & Machine Learning

A zero-cost, purely client-side Retrieval-Augmented Generation chatbot. It searches our curated knowledge base of AWS, Data Science, and Machine Learning certification questions directly in your browser using fuzzy search, providing instant answers and detailed explanations.

• Client-side RAG search
• AWS & ML knowledge base
• No API keys required

Read Aloud For Me

An AI tools hub that reads back to you

Text-to-speech and a hub for the AI tools worth keeping in one place. Built for people who'd rather listen to a long document on the walk to work than squint at it on a phone.

• Natural text-to-speech
• AI tools in one place
• iPhone, iPad and Mac

DjamgaMind Bedtime Stories

Read-aloud tales from Black history

The family side of DjamgaMind. Amanirenas, Mansa Musa, Harriet Tubman, Anansi and the libraries of Timbuktu - narrated bedtime stories that treat children as an audience worth telling real history to.

• Narrated, read-aloud stories
• Figures from Black history
• iPhone, iPad and Mac