Good Light Meter vs SlowLightMeter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Good Light Meter
This tool turns your smartphone into a professional exposure meter for photography. It uses your device's camera to calculate real-time Exposure Value (EV) and provides precise recommendations for aperture, ISO, and shutter speed, aiding both film and digital photographers in achieving optimal exposure.
- Real-time Exposure Value (EV) calculation
- Aperture, ISO, and shutter speed recommendations
- Uses device camera for metering
- Suitable for film and digital photography
- Simple and professional interface
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Good Light Meter is a simple film light meter app that transforms your smartphone into a professional exposure tool. Using your device's camera, it calculates the Exposure Value (EV) in real time and offers accurate recommendations for aperture, ISO, and shutter speed. Whether you’re shooting on film or working digitally, this app makes it easy to achieve the ideal exposure.
SlowLightMeter
This app provides a simple and accurate light meter for film photographers. It continuously measures light with minimal interaction and includes an ISO lock to prevent accidental changes. EV values are a core feature for ease of use.
- Reflective and incident light metering
- Continuous light measurement
- ISO lock
- EV value display
- Simple interface
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As a film photographer, I wanted an accurate yet simple reflective and incident light meter. After trying several, I decided to build my own. This light meter continuously measures light, so it requires minimal interaction during a shoot. To avoid accidentally changing film ISO, I added an ISO lock. And since I shoot often with my Hasselblad, I made EV values a core feature of the app.
Screenshots
Verdict
The clearest difference is update cadence: Good Light Meter at every 2 days against SlowLightMeter's every 5 days. SlowLightMeter's advantage is ratings volume (6 vs 1) and iOS requirement (15.6 vs 18.1). On price, rating, 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.
On the App Store both sit at effectively the same score — 5.0 for Good Light Meter against 5.0 for SlowLightMeter. That said, the two scores are not equally well evidenced: SlowLightMeter has 6 ratings behind it against 1, so its average is the more settled of the two.
Good Light Meter ships an update every 2 days, SlowLightMeter every 5 days. The most recent releases landed on October 30, 2026 and November 2, 2026 respectively.
| Parameter | Good Light Meter | SlowLightMeter |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (6 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 2 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.1 | 15.6 — better |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | IACTA, LLC. | Ari Jaaksi |
In-app purchases
Good Light Meter
No in-app purchases
SlowLightMeter
No in-app purchases
Questions
Is Good Light Meter free?
Is SlowLightMeter free?
Which has better reviews, Good Light Meter or SlowLightMeter?
Do Good Light Meter or SlowLightMeter have ads?
Which is updated more often, Good Light Meter or SlowLightMeter?
Other comparisons
