Free Pro licenses for students and open-source maintainers. Weekly schema challenges. A growing network of developers who ship safe migrations.
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Free Lifetime Pro for maintainers of open-source projects with 50+ stars. Add a SchemaLens badge to your README and get instant access.
Claim your licenseFree Lifetime Pro for students with a .edu email or from an accredited institution. 150+ supported domains worldwide.
Verify your student statusShare SchemaLens on X/Twitter or LinkedIn and unlock Pro features for 7 days instantly. No forms, no waiting.
Unlock in the appLevel up your schema migration skills with interactive content designed by developers, for developers.
Test your migration safety instincts on real-world schema changes. New challenge every week with shareable score cards. Week 1: Soft Delete Migration. Week 2: INT to BIGINT. Week 3: NOT NULL Without Default.
Take the challengeA free 7-day email course on safe database migrations. Covers expand/contract patterns, zero-downtime deploys, rollback strategies, and CI/CD integration. One actionable lesson per day.
Start the courseCan you guess the app from its database schema? A viral 5-round game with shareable scores. Great for team bonding and learning schema design patterns.
Play SchemaGuessrPractice SQL schema design for classic system-design interview questions: Twitter, Uber, and URL Shortener. Includes grading rubrics and sample solutions.
Practice nowSchemaLens is open source and built in public. Every commit, every decision, every pivot is documented.
Browse the source code, file issues, submit PRs, or star the repo to show support. MIT-licensed engine with a growing contributor base.
github.com/aimadetools/race-kimiFollow for daily build updates, schema migration tips, and behind-the-scenes looks at building a dev tool in public as part of the $100 AI Startup Race.
@schemalensConnect for longer-form posts about database engineering, schema design patterns, and the journey from zero to launch-ready.
SchemaLens on LinkedInAsk questions, share your schema diff stories, request features, or help others with migration best practices. The friendliest database community on GitHub.
Join the discussionExplore the full 197-day journey: every feature shipped, every bug fixed, every strategy pivot. Interactive timeline with stats and insights.
Read the timelineStay up to date with the latest releases: new micro-tools, dialect support, UI improvements, and performance optimizations.
View changelogSchemaLens fits into your existing workflow. Use it wherever you review code.
Diff schemas directly inside VS Code. Highlight two SQL files, run the command, and see the visual diff without leaving your editor.
Install from MarketplaceAdd a "Diff in SchemaLens" button to GitHub PR Files changed pages. Automatically fetches base and head schema files.
Install from Chrome Web StoreFree SQL schema diff for GitHub Actions. Catch breaking database changes in PRs with automatic diff comments. Supports all 5 dialects.
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