Luminometer vs Luminosys
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Luminometer
Transform your device into a professional light meter to measure luminosity in lux and foot-candles. Achieve optimal illumination for any space, from greenhouses to workspaces, ensuring comfort and preventing glare. Calibrated with reference equipment for precise and reliable readings.
- Measures lux and foot-candle units
- Internal Exposure Compensation for accuracy
- Camera view for measured area
- Calibrated with reference equipment
- Versatile for various lighting conditions
- Helps set optimal illumination levels
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Luminometer is an exceptional app that is designed to transform your iPhone or iPad into a professional and user-friendly light meter. It is based on Internal Exposure Compensation, which makes it the most accurate lux meter available on the market today. With Luminometer, you can easily measure the lux of any light source in both lx and foot-candle units without having to spend any money on professional equipment. One of the standout features of Luminometer is the ability to swiftly and efficiently set up your greenhouse, living room, workplace, study room, or any other area with the perfect level of illumination. Our app ensures that you achieve a well-lit environment that is comfortable to work in without causing any unnecessary glare. The app is incredibly versatile, making it consistent for use in various lighting conditions such as plant lighting, household lighting, workstation lighting, and mood lighting. No matter the type of lighting you need to measure, Luminometer is up to the task. With Luminometer, you get a comprehensive set of features that enable you to measure lux with ease. The camera view feature allows you to view the area being measured, making it even more user-friendly. The app is calibrated using top reference equipment, ensuring that your measurements are always precise and reliable. Whether you're dealing with ambient indoor and outdoor lighting or task and accent lighting, Luminometer has you covered. You can trust that our app is accurate and reliable, thanks to our calibration process, which is done using the best reference equipment available. In conclusion, if you're looking for an accurate, versatile, and easy-to-use light meter app, then Luminometer is the perfect solution for you. Get started today and experience the benefits of using our app to achieve the perfect level of illumination for any environment. Terms and pricing: Our weekly subscription costs $3.99 USD/week and provides you with unlimited access to premium features, as long as your subscription remains active. The subscription automatically renews, and payment will be charged to your iTunes account when you confirm the initial purchase. If you do not wish to renew your subscription, you may turn off the auto-renewal option in your Account Settings at least 24-hours before the current subscription period ends. For more information, please refer to our terms of service available at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ or privacy policy on https://27groupts.notion.site/Privacy-Policy-for-Luminometer-iOS-App-68f7e665c2924108a9111eae825e53c7
Luminosys
Accurately measure ambient light levels in Lux or Foot Candles using your phone's camera. This tool is ideal for photography, comparing light sources, or indoor gardening. It's designed for ease of use and provides precise readings.
- Measures light in Lux
- Measures light in Foot Candles (FC)
- Uses phone camera for accuracy
- Easy to use interface
- Suitable for photography
- Useful for indoor gardening
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Luminosys allows you to accurately measure the ambient light level in Lux or Foot Candles (FC). To do this, Luminosys uses your phone's camera in conjunction with a piece of paper to accurately measure the light level. It is very easy to use and is a great app for those looking for accurate light measurements for photography, comparing light sources, or indoor gardening.
Screenshots
Verdict
The clearest difference is review sentiment: Luminosys at 75% against Luminometer's 0%. Luminosys also leads on rating (4.3 vs 3.5) and in-app purchases (none vs 2). Luminometer's advantage is update cadence (every 2 months vs every 19 months). On price, ratings volume, 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. Luminometer sells 2 in-app purchases, starting at $2.99 per 7 days. Luminosys asks for nothing beyond the download.
Luminosys holds the better App Store score, 4.3 against 3.5. Both are backed by a comparable volume of ratings — 16 and 10 respectively. Written reviews point the same way: 0% of Luminometer's written reviews are positive against 75% of Luminosys's.
Luminometer ships an update every 2 months, Luminosys every 19 months. Both last shipped on October 24, 2026.
| Parameter | Luminometer | Luminosys |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (16 ratings) | 4.3 (10 ratings) — better |
| Positive reviews | 0.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 16 — better | 10 |
| Update frequency | Every 2 months — better | Every 19 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 27GROUP | Melissa Zwick |
Customer experience
Luminometer
Luminosys
In-app purchases
Luminometer
- Weekly$2.997 Days
- Lifetime$9.99
Luminosys
No in-app purchases
Questions
Is Luminometer free?
Is Luminosys free?
Which has better reviews, Luminometer or Luminosys?
Do Luminometer or Luminosys have ads?
Which is updated more often, Luminometer or Luminosys?
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