Comparison

Lumo Light Meter vs Meter One

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lumo Light Meter

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A light meter, refined for film. Lumo brings precise exposure to your pocket, designed for photographers who care about every frame. Whether you're loading a roll of 35mm or composing on the ground glass, Lumo gives you the readings you need and nothing you don't. Two ways to meter Spot mode for narrow, deliberate readings of a single tone. Matrix mode for evaluative readings across the whole scene. Switch instantly, depending on the shot in front of you. Matched to your camera Choose from a library of film cameras and calibrate Lumo to the body you're shooting. Your meter, your camera, the same readings — frame after frame. Hold and capture Lock a reading to recompose, plan a shot, or compare values across the scene. Capture exposures as you work and return to them when you're ready to release the shutter. Made to disappear A quiet interface that stays out of your way. Custom themes let you tune Lumo to the moment — bright for the studio, dark for the darkroom, low-key on the street. Made for film photographers • Hobbyists and pros shooting 35mm or medium format • Students learning exposure, the Zone System, and the discipline of analog • Anyone who'd rather feel the camera than fight the meter Lumo. Meter every frame with care.

About

Meter One

Features
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Meter One is a reflected light meter for film photographers. Point your iPhone at the scene. Meter One reads the light and gives you practical exposure settings: shutter speed, aperture, ISO and exposure compensation. It is built for real analog gear. Manual cameras. Vintage lenses. Medium-format systems. Bodies with missing, broken or unreliable meters. Meter One does not work like a generic exposure calculator. It lets you define the limits of your camera and lens, so the recommendations match the gear you actually use. Features: • Live reflected-light metering with the iPhone camera • Aperture Priority, Shutter Priority and Manual modes • ISO and exposure compensation controls • Recommended shutter speed and aperture • Camera body shutter-speed limits • Lens aperture limits • Hold reading control • Analog-style exposure dial • Saved readings and film roll log • Calibration tools • On-device metering Use Meter One with manual 35mm cameras, medium-format cameras, vintage SLRs, rangefinders and classic systems with limited shutter speeds. Meter One Pro is a one-time lifetime unlock. It includes unlimited gear profiles, saved readings, calibration tools and future film workflow features. Privacy: Meter One uses the camera preview for live metering. It does not need to save photos for exposure measurement, and camera frames are not uploaded. No ads. No account. No tracking. Meter One is a practical reflected-meter aid for film photography. Readings can vary with scene contrast, lighting conditions, camera behavior and device characteristics.

Screenshots

Lumo Light Meter4 screens
Meter One3 screens

Verdict

The call

The clearest difference is iOS requirement: Lumo Light Meter at 18.0 against Meter One's 26.5. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lumo Light Meter sells 1 one-off in-app purchase and Meter One sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 5 level
Lumo Light Meter versus Meter One: the parameters behind the verdict, then further details
ParameterLumo Light MeterMeter One
PriceFreeFree
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad — better
Requires iOS18.0 — better26.5
Further details — not scored
Size2 MB2 MB
Age rating4+4+
DeveloperNinja Lab StudiosBogdan Lyashenko

In-app purchases

1 purchases

Lumo Light Meter

One-time1
  • Lumo Pro$1.99
1 purchases

Meter One

One-time1
  • Meter One Pro$7.99

Questions

Is Lumo Light Meter free?
Lumo Light Meter is free to download, with in-app purchases available.
Is Meter One free?
Meter One is free to download, with in-app purchases available.
Do Lumo Light Meter or Meter One have ads?
Neither Lumo Light Meter nor Meter One shows ads.

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