Playful tools for learning technical concepts and building real skills
Baldwin Apps creates mobile apps and educational tools that make complex topics more approachable, engaging, and practical for technical users.
Founded by a software professional with 30+ years in software and a long-standing love of building useful, thoughtful products.
How Baldwin Apps started
Baldwin Apps began with a simple challenge: learning by building.
The journey started with Divided Notebook, an app originally built to teach myself Android development. At the time, I was using a dividends app and felt inspired to create something more useful and more thoughtfully designed myself.
Divided Notebook went on to reach more than 30,000 downloads, giving me real experience shipping software to a global audience and supporting a live product.
That foundation eventually grew into Baldwin Apps — a portfolio of apps designed to make technical learning, problem-solving, and professional growth more approachable through thoughtful design and practical functionality.
Current app portfolio
Baldwin Apps is building a growing ecosystem of technical learning tools and practical apps for developers, learners, and security-minded professionals.
SQL Bubble Pop
A playful mobile game that helps people practice SQL in a way that feels approachable, interactive, and less intimidating.
Learn more about SQL Bubble Pop →Cyber Word Match
A cybersecurity learning game designed to help users strengthen their understanding of security concepts through interactive challenges.
Learn more about Cyber Word Match →Security Cheat Sheet
A cybersecurity toolkit app featuring curated security information, CVE lookup, AI-powered analysis, dashboards, and reference content.
Visit Security Cheat Sheet →Books from Baldwin Apps
Practical SQL guides, recognition-based learning resources, and puzzle collections for analysts, developers, learners, and database professionals.
SQL Recipes for Data Analysts
Connect real business questions to clear, useful analytical SQL.
SQL Patterns: The Recognition Approach
Learn to recognize reusable query shapes instead of memorizing isolated syntax.
SQL Puzzles & Brain Teasers
Sharpen query thinking through fun, thoughtful SQL challenges.
SQL Recipes for DBAs
Support performance, maintenance, troubleshooting, and database stewardship.
Selected Baldwin Apps SQL titles are also available in Spanish.
What Baldwin Apps is about
The mission is simple: make technical learning and technical tools feel more approachable without sacrificing usefulness.
Practical learning
Build confidence with apps that encourage hands-on interaction, repetition, and real understanding.
Thoughtful design
Create products that are useful, visually appealing, and pleasant to spend time with.
Technical depth
Draw on real-world experience in software, databases, security, and app development.
Explore the Baldwin Apps ecosystem
Discover a growing portfolio of apps built to help people learn, practice, and work with technical concepts in more engaging ways.