PsyPad vs BPaaS Image Ruler

PsyPad is an open source platform for facilitating visual psychophysics experiments on an iPad. Using customisable staircases or MOCS, the researcher can control presentation of any stimuli that can be precomputed as PNG image files, including movies. Features include participant accounts, up to 4 response buttons, comprehensive log files, and remote test configuration using the PsyPad server. A demo mode with access to a public gallery of tests also makes PsyPad useful for teaching. The project is open source, with repositories for the application code and example server code. https://github.com/davidlawson/PsyPad https://github.com/davidlawson/PsyPad-Server

Measure Pixels with Precision BPaaS Image Ruler is a lightweight pixel inspection tool designed for developers, designers, and technical users who need accurate image measurements. Key Features • X/Y pixel rulers with real coordinate readout • Adaptive grid with major and minor divisions • Zoom up to 80× for detailed inspection • Pinch-to-zoom and pan gestures • Toggle rulers and grid overlays • Import images from Photos • Paste images directly from clipboard All processing happens locally on your device. No data is collected or transmitted. BPaaS Image Ruler is ideal for UI inspection, layout validation, design verification, and pixel-perfect measurements.