Eulumdat vs EnterCalc

Eulumdat is a professional photometric data viewer for lighting engineers, designers, and architects. View and analyze LDT (EULUMDAT) and IES photometric files with beautiful interactive diagrams. Features: • Open and view LDT and IES photometric files • Multiple diagram types: Polar, Cartesian, Butterfly, Heatmap, BUG Rating, and LCS • Interactive 3D butterfly diagram visualization • Export diagrams to SVG • Convert between LDT and IES formats • Batch conversion support • Dark and light theme support • QuickLook preview integration (macOS) Perfect for: • Lighting designers reviewing luminaire data • Architects evaluating lighting fixtures • Engineers analyzing photometric distributions • Anyone working with lighting specification files

You enter calculations, EnterCalc returns results. EnterCalc is a native calculator for iPhone and iPad. Whether you're at your desk or on the go, EnterCalc focuses on simplicity, intuitive quality-of-life improvements, and easy multitasking. It delivers a familiar calculator experience while adding thoughtful features that make everyday calculations fast and easy. Available for both iOS and MacOS. Features: • Open multiple calculator panels with independent calculations and settings • Calculation history with quick reuse of previous results • Customizable function keys for your preferred actions • Advanced copy, paste, undo, and redo support • One-click copying for fast workflows • Preserve calculation context when copying and pasting • Digit-level editing for quick corrections • Currency mode with built-in VAT and TIP calc tools • Hardware keyboard and shortcut support • Landscape mode support • Optional scientific notation • Configurable rounding behavior • Multiple number formatting styles • Multiple language and localization options • Support for alternative keyboard layouts • Light and Dark Mode support • Optional tactile and audio feedback on supported devices • Accessibility-focused design • Lightweight and distraction-free • Privacy-focused, operates entirely on your device with no tracking or analytics • Open source under the MIT License