Supported Features
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Sufficient Contrast
GrayZone - Light Meter
Zone System Spot Light Meter
Only for iPhone
$2.99
iPhone
Measure light. Choose where to expose. Control your image.
Spot meter for film and digital photography.
Simplified Zone System mode for precise, intentional exposure.
GrayZone reads light where you decide — not where
your camera guesses.
Built by Max of max&douglas — professional
photographer with 25 years in editorial and
advertising photography.
Zone System Mode
Measure a reference area first (Zone V), then check where the other tones will fall and their relative EV difference, for precise and consistent exposure.
Real SPOT Metering
Reads light exclusively in the area you select.
Ideal for portraits, complex lighting and critical
situations.
Calibrated to render the selected area as neutral gray.
Direct Exposure Control
Set ISO before metering, like a dedicated light meter.
Instant precise combinations of shutter speed
and aperture.
Exposure lock with AE LOCK.
Half-stop support for finer control.
MANUAL mode with over/underexposure scale.
Essential Interface
Live preview in your sensor's native ratio.
NEW UI color inversion
Shows only what you need. Nothing else.
Complete Privacy
No ads. No photos saved.
No data collected or transmitted.
For manual shooters — on film or digital.
It does not replace your camera. It works alongside it.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Thanks for continuing to follow GrayZone!
We’ve been working hard to keep up with all your requests. You can now choose to use the app as a simple SPOT meter, or switch to a more advanced version of the Zone System, where you can finally assign the zone you want to your first reading and see where all the other zones fall accordingly.
We’ve also added 1/3-stop increments, taking precision one step further.
There’s now a nice little button for contacting support directly, plus some good old code and interface cleanup — and, of course, full compatibility with iOS 27.
The developer, Massimiliano Schenetti, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Provider
- Massimiliano Schenetti
- Size
- 3.2 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Max Schenetti. All rights reserved.
