f/oss is made and published by Luca Tescari. AppBrain is an independent app data site and isn't affiliated with Luca Tescari. The app name, icon, screenshots and description belong to Luca Tescari and are shown as published on the App Store.
AppBrain's verdict
- Last updated
- November 5, 2026
- Size
- 743.0 KB
User feedback
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Store listing
By Luca Tescari, from the App Store
Description by Luca Tescari Written by the developer, not by AppBrain. Click to read.
Point the spot-metering circle at your subject and read the exposure instantly. f/oss measures true photometric luminance through your iPhone's camera and is calibrated against professional reference meters.
FIVE METERING MODES
• Aperture Priority: set f-stop and ISO, get your shutter speed
• Shutter Priority: set shutter and ISO, get your f-stop
• Exposure Value: read the scene's EV directly
• Cine: shutter angle and frame rate for filmmakers
• Manual: check your chosen settings against the metered scene
BUILT FOR REAL CAMERAS
• Camera profiles: save your bodies with their actual shutter and bias limits
• Full, half or third stop increments
• Configurable shutter, aperture, ISO and exposure bias ranges
• Reference lock: freeze a reading and measure scene contrast in stops
• Exposure lock for recompose workflows
ACCURATE
• True spot metering of exactly the circle you see
• Full-color light analysis: reads saturated LED and neon light correctly
• Verified against professional meters from daylight to low light
FREE, NO SUBSCRIPTION
Every feature is free, forever. If f/oss saves your shots, there is an optional tip jar.
Safety and technology
Found in the app by AppBrain- Price
- Free
- App size
- 743.0 KB
- Content rating
- Everyone
Technologies used by f/oss
Releases
Updates seen on the App Store- Version
- 2.1.0
- Launched
- April 2026
No changelog data
Alternatives
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Rankings
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About the app and developer
About f/oss
f/oss is a photo & video app developed by Luca Tescari.
User Ratings
The app has no ratings yet.
App Information
f/oss is freely available from the App Store. The app size is 743.00 kB. The latest version available is 2.1.0. The last update was on November 5, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since April 2026.
Developer information for Luca Tescari
Address:
Frequently asked questions about f/oss
Is f/oss free?
Yes. f/oss is free on the App Store.
Is f/oss still available?
Yes. f/oss is on the App Store, and the last update we saw was on November 5, 2026.
How large is f/oss?
f/oss is 743.00 kB.
Is f/oss suitable for children?
App Store rates the content of f/oss as suitable for everyone.
Who made f/oss?
f/oss was developed by Luca Tescari. It is listed in the photo & video category on the App Store.
What are the best alternatives to f/oss?
People looking at f/oss also look at these photo & video apps: Filmeter: Film Light Meter, Light Meter - Exposure Meter, Stops — Film Light Meter, Fotio: Film Exposure Meter, F8t - Light Meter for Film.