Luminosys vs LuxMeasure
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
LuxMeasure
Instantly measure light intensity using your iPhone camera. Get accurate, real-time illuminance readings with no ads, tracking, or account required. Features include session statistics, live charts, and offline functionality.
- Real-time lux measurement
- Foot-candle conversion
- Front and back camera support
- Session statistics
- Live sparkline chart
- Hold/lock readings
- Save measurements with timestamps
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Measure light intensity instantly with your iPhone camera. LuxMeasure gives you accurate, real-time illuminance readings — no ads, no account, no tracking. FEATURES • Real-time lux measurement using camera sensor • Foot-candle conversion (tap to toggle) • Front and back camera support • Session statistics: min, max, and average • Live sparkline chart showing light changes over time • Hold/lock readings for easy recording • Save measurements with timestamps • Contextual light level labels • Works completely offline BUILT FOR ACCURACY Uses the ISO 2720 photographic exposure standard to calculate illuminance from camera exposure data. Independent calibration for front and back cameras. PERFECT FOR • Indoor plant growers — find the brightest spot for your plants • Photographers — check ambient light levels • Home & office — verify lighting for comfort and eye health • Quick lighting checks — no expensive equipment needed PRIVACY FIRST No ads. No tracking. No data collection. No account required. Everything runs on your device.
Screenshots
Verdict
The clearest difference is rating: LuxMeasure at 5.0 against Luminosys's 4.3. LuxMeasure also leads on ads (none vs shown) and update cadence (every 6 months vs every 19 months). Luminosys's advantage is ratings volume (10 vs 2). On price 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.
LuxMeasure holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Luminosys has 10 ratings behind it against 2, so its average is the more settled of the two.
Luminosys ships an update every 19 months, LuxMeasure every 6 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | Luminosys | LuxMeasure |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (10 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 10 — better | 2 |
| Update frequency | Every 19 months | Every 6 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Melissa Zwick | Blayzelab, MB |
Customer experience
Luminosys
LuxMeasure
In-app purchases
Luminosys
No in-app purchases
LuxMeasure
No in-app purchases
