Light Lamb vs illumeter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Light Lamb
This app acts as a light meter for film photographers, offering both automatic and manual control over camera settings. It helps ensure correct exposure by suggesting adjustments based on your chosen parameters and scene conditions. Features include spot metering, safe shutter speed awareness, and the ability to save settings with scene photos.
- Automatic exposure mode for film cameras
- Assisted manual control of aperture, shutter, ISO
- Histogram for exposure visualization
- Safe shutter speed matching
- Spot metering with 5x zoom
- Customizable ISO, aperture, shutter speed ranges
- Save settings with scene photos and location
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Light Lamb is a free photographers’ light meter app for iOS. You can let Light Lamb decide everything for you like getting an auto mode for your manual film camera, or you could have full manual control of the parameters, or whatever you want in between. - Now with histogram (New in 1.3.0) Use the histogram to make sure the scene is exposed just like how you envisioned. - From full auto to assisted manual control In most cameras if you pick a parameter like aperture, shutter, or ISO, the camera would stick to your chosen values even if it's too dark or too bright for the scene. The reason we made Light Lamb is to have a light meter that would suggest different settings if the chosen parameters are not suitable. For example, you can keep your settings at f/8 and 1/125 for deep depth of field and fast shutter speed, but if it's too dark, Light Lamb would suggest brighter values to make sure it's correctly exposed. Or say you want to set the aperture to f/1.4 for shallow depth of field, and if it's bright outside and the shutter is already at its fastest speed, Light Lamb would suggest a smaller aperture. Just set the parameters to what you want and Light Lamb will handle the rest. - Safe shutter-aware Pick a preferred slowest shutter speed you want and Light Lamb will match it. If the scene is too dark, Light Lamb automatically pick a slower shutter speed beyond the safe shutter to achieve the correct exposure. - Spot metering Zoom in 5x to focus the measurements to small areas in contrasting scenes. - Match your equipment Choose the range and increment of ISO, aperture, and shutter speed to match your equipment. Choose between whole-stop, half-stop, and one-third EV increments for each parameter. - Keep a memo Keep a memo of the settings used, including a photo of the scene and the location. Export it as a beautiful picture note formatted in 4:5 aspect ratio, great for posting to Instagram along with your photo.
illumeter
This app functions as a portable light meter, allowing users to measure exposure values like aperture, shutter speed, and ISO. It offers features for logging shots with location and settings, and provides customization options for a personalized user experience.
- Exposure measurement (Aperture, Shutter Speed, ISO)
- Tap-to-focus exposure lock
- Exposure compensation
- Frame logging with location and settings
- List and map view of logged frames
- Customizable settings and appearance
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illumeter, The Simplest Light Meter in Your Pocket. Exposure Meter • Choose the value you want to measure from Aperture, Shutter Speed, or ISO. • The selected value automatically adjusts based on changes in the other two settings. • Tap a specific point on the screen to lock the exposure to that area. • An exposure compensation feature is provided to help you handle various challenging lighting conditions. Frame Logging • Log your frames by composing your shot and pressing the shutter button. • Location, date and time, EV value, and settings are recorded with each frame. • Review your recorded frames in a list and on a map. • Easily delete or edit incorrect frames. Settings & Personalization • Easily toggle various features on or off. • Deactivate or remove unused values. • Customize the app's appearance and feedback to your preference.
Screenshots
Verdict
The clearest difference is rating: Light Lamb at 5.0 against illumeter's 4.6. illumeter's advantage is update cadence (every 2 weeks vs every 3 months) and ratings volume (11 vs 1). On price, review sentiment, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Light Lamb holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: illumeter has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Light Lamb ships an update every 3 months, illumeter every 2 weeks. The most recent releases landed on September 19, 2026 and October 7, 2026 respectively.
| Parameter | Light Lamb | illumeter |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.6 (11 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 11 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | CHUN YIN FUNG | Seunghun Yang |
Customer experience
Light Lamb
illumeter
In-app purchases
Light Lamb
No in-app purchases
illumeter
No in-app purchases
Questions
Is Light Lamb free?
Is illumeter free?
Which has better reviews, Light Lamb or illumeter?
Do Light Lamb or illumeter have ads?
Which is updated more often, Light Lamb or illumeter?
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