We're happy to help. Most answers are below — otherwise just email us.
Email supportHow does Phos measure light?
Point the camera at your scene. Phos reads the light and calculates the exposure — aperture, shutter, and ISO. Lock any two values and it solves the third.
Camera access is off — can I still use it?
Yes. Switch to Manual · Sunny 16 on the meter screen to estimate exposure without the camera.
The reading differs from my camera's meter. Why?
Meters can be calibrated differently, and reflected readings depend on where you point. Phos Pro adds incident calibration so you can match your gear.
What's in Phos Pro?
Spot metering, zone / exposure compensation, incident calibration, unlimited history with CSV export, and extra themes. It's a one-time purchase.
Is there a subscription?
No — Phos Pro is a single one-time purchase. Restore it anytime from Settings → Restore purchases.
Where is my data stored?
Only on your device. Phos works offline and never uploads anything.
See our Privacy Policy.
Email enes@rhoagency.net and we'll get back to you.