Light Meter & Logbook

In-app purchases
4.4
376 reviews
100K+
Downloads
Content rating
Everyone
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About this app

Turn your phone into a professional light meter and photo logbook — ideal for film, digital, and pinhole photography.

ACCURATE EXPOSURES

• Reflected metering with your camera
• Incident metering with the light sensor
• EV calibration for precision
• Fractional stops (1/2, 1/3) for fine-tuning

ADVANCED TOOLS

• ISO range from 3 to 25,600
• ND filter and long-exposure timer
• Spot metering with histogram
• 35mm equivalent focal length display
• Pinhole camera support with custom f-numbers
• Built-in library of 20+ films with option to add your own
• Push/pull processing support
• Reciprocity correction for long exposures

FAST & FLEXIBLE

• One-tap exposure calculation
• Customizable metering screen layout
• Equipment profiles for cameras, lenses, and pinhole setups
• Dark mode and haptic feedback

COMPLETE PHOTO LOGBOOK

• Record exposure settings, location, and notes
• Keep all shooting data organized and accessible

PERSONALIZED INTERFACE

• Light, Dark, or System themes
• Material You dynamic colors
• Custom primary color

Download Light Meter & Logbook to achieve accurate exposures and keep every shot documented — all in one powerful app.
Updated on
Sep 15, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App activity and App info and performance
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.4
368 reviews
Jonathan Mildner
August 15, 2023
I tried to write a long, beaming review, but I hit the char limit. So I'll cut to the chase. Excellent app, almost perfect. Ad-free: developer after my own heart. Thanks much: donate? I'd like to humbly suggest somewhat deeper customizability. I'd love to be able to manually specify min/max apertures & shutter speeds, select/deselect shown films in the picker list, and—the "killer feature"—optionally specify limited apertures & shutter speeds, for those cameras with more granualar controls.
24 people found this review helpful
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Vadim Turko
August 16, 2023
Thank you for your feedback! Specifying min/max values will be available in the next big release. If you are a GitHub user, you can create a feature request for selecting films and other features via "Report an issue" setting in the app. If not, please write me and email and tell more about "limited apertures & shutter speeds". Thanks!
Colin Cooper
August 30, 2025
costs £4.59 to buy it once in the UK, in the US play store it's $1.99/month or $14.99/yr. lol. I would have bought it for £4.59, as it is, uninstalling.
1 person found this review helpful
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Xaypanya Thipphavong
July 31, 2025
I've this app installed on both of my phones and the exposure readout is pretty much accurate with ~±0,1 EV variation on both. But, with mid to very complicated scenes, you may get a few different readouts.
6 people found this review helpful
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What’s new

- Added support for pinhole cameras
- Improved display format for long shutter speeds
- Bug fixes and performance improvements