Apollon vs Seiql

Create UML and software-design diagrams with Apollon, the open-source editor for the web—now ready for iPhone and iPad. Apollon helps students, educators, software engineers, and architects turn ideas into clear, structured models. Start without an account, keep local diagrams on your device, and work offline. When you are ready, export your diagram or share it for feedback and live collaboration. What you can do: • Choose from 13 notations: Class, Object, Activity, Use Case, Communication, Component, Deployment, Petri Net, Reachability Graph, Syntax Tree, Flowchart, BPMN, and SFC. • Start with a blank canvas or a software-design pattern template. • Edit with a touch-friendly interface designed for iPhone and iPad. • Export to SVG, PNG, PDF, PPTX, or JSON. • Use light or dark appearance in portrait or landscape. • Create an optional share link; diagrams you keep local remain local. Apollon uses the same open diagram format across the web app, iPhone and iPad, VS Code, and embedded products. The project is open source and developed by TUM Applied Education Technologies.

Master SQL with Seiql, the premium learning studio built for focus and technical depth. Whether you're writing your first SELECT statement or mastering subqueries, Seiql guides you through structured, hands-on lessons in a refined, professional environment. Progress through 6 comprehensive lessons covering everything from SELECT basics to advanced subqueries. Each lesson walks you through key concepts step by step, then challenges you with practical exercises where you write real SQL. Track your growth with an intelligent XP system, earn badges, build daily streaks, and rise through ranks from Beginner to SQL Master. KEY HIGHLIGHTS: • Structured SQL Curriculum: 6 progressive lessons — SELECT Basics, WHERE & Filters, ORDER BY, JOIN Operations, GROUP BY & Aggregation, and Subqueries — each with educational steps and hands-on exercises. • Interactive Exercises: Write real SQL to solve problems. Get instant feedback, use hints when stuck, and learn from detailed explanations for both correct and incorrect answers. • Daily Challenges: A fresh SQL challenge every day to keep your skills sharp and earn bonus XP. • Intelligent Progress Tracking: Earn XP for every completed exercise, unlock professional badges, maintain daily streaks, and climb through ranks. • Learning Path Personalization: Tell us your experience level and goals, and Seiql tailors lesson recommendations and focus areas to match your needs. • Rich Analytics Dashboard: Monitor your weekly activity, topic performance, success rates, and identify areas for improvement. • Privacy First: All your progress and data stay on your device. No accounts, no servers, no tracking — your learning journey is yours alone. WHY SEIQL? Most coding apps feel generic and cluttered. Seiql is designed for people who take their database skills seriously — smooth interactions, a cohesive design system, and a curriculum that actually teaches you to think in SQL, not just memorize syntax. It's the learning companion you'll keep coming back to.