Prepware Instrument Pilot vs Mohr's CSA

Comprehensive preparation, study and test tool for the FAA Knowledge Exam. Flashcard style review of questions, answers and explanations included for you to study by subject or with a true-to-form practice test.

Mohr’s Circle — Stress Analysis Turn stress inputs into insight. This app makes Mohr’s Circle clear, fast, and interactive — perfect for students, educators, and practicing engineers. Enter 2D or 3D stress components, visualize Mohr’s Circle instantly, compute principal stresses and maximum shear, and export clean, shareable PDFs. Whether you’re checking homework, preparing lecture material, or validating calculations on the job, this tool helps you go from inputs to answers in seconds. What you can do • Visualize Mohr’s Circle (2D) and (3D) • Compute principal stresses (σ1, σ2) and maximum shear (τmax) • Transform stress states with angle controls and see results update live • Inspect clear σ/τ axes, principal points, and helpful annotations • Save and load stress states for quick reuse • Export neat PDFs (current view or full report) to share or archive Designed for clarity • A modern, touch-friendly interface built with SwiftUI • Real-time updates as you adjust inputs and angles • Clean labels and overlays for principal stresses, τmax, and key geometry • Helpful summaries and formula references for learning and documentation For 2D and 3D workflows • 2D: Enter σ11, σ22, τ12 and explore Mohr’s Circle with interactive visualization • 3D: View the triple-circle representation and principal stress values (σ1, σ2, σ3) Save, load, and share • Save your stress states with a title and timestamp • Load them later to resume work or compare scenarios • Export PDFs for reports, review, or teaching materials Upgrading from an older app? • One-time migration preserves your previously saved records from the legacy Core Data store (if present on device) • Migration runs safely once and avoids duplicates Who it’s for • Mechanical, civil, aerospace, and materials engineers • Students learning mechanics of materials and stress analysis • Educators preparing examples and lecture visuals • Anyone who wants a clean, focused Mohr’s Circle tool Why this app • Focused: Everything you need for Mohr’s Circle — no clutter • Practical: From input to principal stresses and τmax in seconds • Shareable: Export clean PDFs for documentation and teaching