Projection Mapping Toolbox vs OhmKit

Projection Calculator Toolbox is a mobile utility for projection mapping, AV, and live production workflows. It is designed for on-site calculations where speed and accuracy matter. The app provides tools to calculate projector placement, throw distance, surface dimensions, and multi-projector layouts using real-world measurements and manufacturer specifications. Tools Included Throw Distance Calculator Calculate projector-to-surface distance using lens throw ratios. Multi-Projector Calculations Plan multi-projector layouts with support for edge blending. Surface Dimension Tool Convert physical surface measurements into pixel width and height. Aspect Ratio Estimator Estimate surface aspect ratio using live view or photo reference. CAD PDF Import Import technical drawing PDFs and visualize projector photometrics over layouts. Projector Inventory Store commonly used projector specifications and reuse them across calculations. Projection Calculator Toolbox is intended for technicians and designers who need reliable calculations on site without spreadsheets or desktop software. The interface prioritizes clarity and fast input to minimize setup time. Built with React and Capacitor for native iOS performance.

OhmKit is a resistor calculator and electronics toolkit designed for engineers, technicians, students, makers, and electronics enthusiasts. Decode resistor color codes and SMD markings, calculate circuit values, find suitable standard resistors, and organize your components and projects in one clean app. CALCULATORS • Decode 3, 4, 5, and 6-band resistor color codes • Convert resistance values into color bands • Decode and encode SMD resistor markings • Calculate series and parallel resistors • Find target resistance combinations using standard E-series values • Calculate voltage, current, resistance, and power with Ohm’s law • Design series and parallel LED circuits • Calculate voltage dividers • Calculate resistor power and recommended power ratings • Automatically convert engineering units PROJECT TOOLS • Save calculation history and favorites • Create reusable presets • Organize components into projects and bills of materials (BOM) • Export project data as PDF or CSV • Back up and restore supported local data • Copy and share calculation results • Access built-in electronics references DESIGNED FOR EVERYDAY USE • Clear circuit diagrams and standard electrical symbols • Light and dark themes • Adjustable calculator and display preferences • Interface available in 13 languages • Core calculations run locally on your device The free version contains ads. OhmKit Pro removes ads and unlocks additional workflow features. Purchases are securely processed through the App Store. Calculation results are provided as engineering aids. Always verify component ratings and manufacturer specifications before building or powering a circuit.