Satrelle Plannerv1.1.0
Released July 21, 2026Major
iOS
What changed
- New featureAdded Exposure tool to calculate shutter, aperture, or ISO settings and ND filter reciprocity.
- New featureAdded Spot Stars tool to calculate maximum shutter speed for sharp star photography using 500 or NPF rules.
- UXImplemented general polish and minor improvements throughout the app.
Original release notes
Two new tools for the field, both free. - Exposure. Match any exposure you have already metered. Choose what to solve for, shutter, aperture, or ISO, enter your test shot and the two settings you want to keep, and read the setting that puts you back at the same brightness. Stack ND filters for long daytime work and it does the reciprocity math for you. - Spot Stars. Find the longest shutter that still keeps the stars as points, by the classic 500 rule or the sharper resolution-aware NPF rule. Dial in your lens, sensor, and where you are pointing, then send the result straight into Exposure as your shutter. - Plus small polish throughout. Clear skies!