LightCalc.io vs Test Signal Generator

LightCalc is the on-set lighting tool built for cinematographers, gaffers and lighting professionals. Stop doing mental maths under pressure - get the right exposure, the right fixture, and the right setup in seconds. Exposure Calculator Input your camera settings - T-stop, ISO, shutter angle, frame rate, ND filters - and instantly see the illuminance your scene needs. Switch between lux and foot-candles with one tap. Ambient Light Meter Use your iPhone camera as a live lux meter. Point at any surface to get a real-time ambient reading and feed it directly into your calculations - no separate hardware needed. Fixture Comparison Compare up to four lighting fixtures side by side at any distance. Adjust count and dimming per fixture and see relative output at a glance. Power & Distance Solver Know exactly what dimming level or distance you need to hit your target exposure. Works with your chosen fixture, modifier, diffusion and gel. Full Fixture Library Access a curated library of professional fixtures and modifiers. Plus users can add their own custom fixtures and diffusion materials - synced across web and mobile. Projects Save your setups and reload them on the next shoot. Your lighting data travels with you. Built for the Set Dark UI, fast inputs, haptic feedback - designed to be used in low-light environments with one hand while holding a light meter in the other. LightCalc requires an active LightCalc Plus subscription. Manage your subscription at lightcalc.io. Privacy Policy: https://lightcalc.io/privacy-policy | Terms of Use: https://lightcalc.io/terms-conditions

Test Signal Generator helps you validate displays, projectors, LED walls, streaming workflows and production systems using professional broadcast-style test signals. Generate industry-standard test patterns directly from your iPhone, iPad or Mac and send them to external displays via HDMI or connected video hardware. Features include: • Color Bars • Greyscale • Full-screen color fields • Zone Plate • Gradient Banding Test • Motion Test Patterns • Moving Pixel Test • Timecode Overlay • Clock Overlay • Audio Reference Signals • Geometry Guides • Safe Area Guides • Frame Boundary Guides • Social Media Framing Guides (9:16, 4:5, 1:1) Use Signal Generator to: • Align projectors • Verify LED wall processors • Detect scaling issues • Check overscan and cropping • Validate signal chains • Test audio/video synchronization • Troubleshoot streaming workflows • Prepare live productions Pro features unlock additional test patterns, advanced guides, audio references, custom branding. Designed for broadcasters, AV professionals, event technicians, streamers and content creators.