Lghtmtr vs Graupe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lghtmtr
This app provides a minimalist light meter to help users determine ideal exposure settings for photography. It visually demonstrates the relationship between ISO, aperture, and shutter speed, making it intuitive for learning photographers.
- Minimalist light meter
- Intuitive exposure settings
- Visual feedback
- Adjustable ISO, aperture, shutter speed
- Camera profile customization
- Scene reference with readings
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Lghtmtr is a beautifully simple light meter that helps you find — and understand — the ideal exposure settings for a scene. Built for film photographers and anyone learning the craft, it makes the relationship between ISO, aperture, and shutter speed feel intuitive and the visual feedback helps reinforce the connection between them. Take a reading, get your settings, and start exploring. Adjust one value and the others respond instantly. Lock settings to experiment and see how each change affects your exposure. You can easily add camera profiles to the app to limit the possible values to what's most relevant to your camera and lens combination. With a visual reference of the scene behind every reading, Lghtmtr helps you shoot with clarity and confidence.
Graupe
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Graupe is the essential companion for film photographers. Whether you're loading a fresh roll of Portra or dialing in exposure for a long night shot, Graupe keeps all your analog tools in one place. **Light Meter** Use your iPhone camera as a real light meter. Choose between spot and average metering, dial in EV compensation, and work in aperture-priority or shutter-priority mode. The live viewfinder shows your scene while Graupe calculates the correct exposure — no separate meter required. **Depth of Field Calculator** Visualize your depth of field before you shoot. Select your lens, aperture, and focus distance, and see a live diagram showing near and far focus limits, hyperfocal distance, and circle of confusion. Supports all major formats: 35mm full frame, APS-C, medium format, and large format. **Film Roll Tracker** Never lose track of a roll again. Log every roll you load — what camera, which lens, which film stock — and follow it through your workflow with status badges: In Use, Finished, Sent to Lab, Scanned, and more. Add custom statuses to fit your process. **Equipment Library** Build a library of your cameras, lenses, and film stocks. Store custom shutter speed sequences for each camera body, and define exact aperture steps for every lens. The DOF calculator and film tracker pull from your library automatically. **Made for Film Shooters** Graupe is built around the analog workflow, not against it. The interface uses a film-grain texture, warm amber tones, and a typographic style that feels at home in a darkroom. Customize fonts, accent colors, and backgrounds to make it yours. Note: Graupe is provided as-is for personal, hobbyist use. No guarantee is made as to the accuracy of any readings, calculations, or data displayed. Do not rely on this app for professional, commercial, or critical photographic work.
Screenshots
Verdict
The clearest difference is in-app purchases: Graupe at none against Lghtmtr's 1. Graupe also leads on update cadence (every 6 weeks vs every 4 months). Lghtmtr's advantage is iOS requirement (17.5 vs 26.2). On price, ads 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
Both are free to download. Lghtmtr sells 1 one-off in-app purchase. Graupe asks for nothing beyond the download.
Lghtmtr ships an update every 4 months, Graupe every 6 weeks. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.
| Parameter | Lghtmtr | Graupe |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (129 ratings) — better | — |
| Positive reviews | 79.7% of reviews | — |
| Number of ratings | 129 — better | — |
| Update frequency | Every 4 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 17.5 — better | 26.2 |
| Further details — not scored | ||
| Size | 25 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Jacque | Lukas Zielinski |
In-app purchases
Lghtmtr
- Coffee tip$4.99
Graupe
No in-app purchases









