Right Bright vs Metriflash

Designed for analog photographers who can't easily check the effect a manual flash will have on their exposures, Right Bright helps by showing an intuitive aperture/distance chart based on the power of the flash and the ISO of the film being exposed. KEY FEATURES: • Simple, intuitive interface • Real-time distance calculations • Visual range indicator for each aperture • Adjustable flash power settings (1/1 to 1/128) • Works offline - no internet required • No ads or tracking HOW IT WORKS: Enter your flash unit's Guide Number, and the ISO setting you're working with, and Right Bright instantly shows you the effective working distances for common aperture values.

Metriflash is a guide number flash calculator for film photographers shooting with manual flash. Set your flash's guide number, ISO, and distance — the app shows you the correct aperture directly on a sliding scale, just like a light meter. Adjust flash power and exposure compensation, and the scale shifts in real time. Save multiple flash profiles to switch quickly between different units or setups. No batteries, no metering — just math that works.