Light Meter vs SANlight
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Light Meter
This app functions as a precise and user-friendly light meter using your phone's built-in sensors. It measures illuminance, color temperature, PPFD/PAR, DLI, and luminous flux in real-time. It also includes a calculator for various illumination parameters and allows sharing or saving of measurements.
- Real-time illuminance measurement
- Color temperature measurement
- PPFD/PAR and DLI calculation
- Built-in illumination calculator
- Share and save measurements
- No additional equipment needed
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Lux-525 Pro – universal, highly-precise, and easy to use light meter. - Requires no additional equipment, everything you need is already in your phone - Calibrated with professional light meter - Smart algorithm provides unsurpassed accuracy in all conditions - Real-time measurements of illuminance, color temperature, PPFD/PAR, DLI and luminous flux - Large collection of light sources necessary for accurate calculation of PPFD/PAR and DLI - Built-in calculator for convenient and precise calculation of various illumination parameters (PPFD, DLI, Lux, Fc, Lumens) - Share your measurements via a text message or email or save them to your phone Lux-525 Pro is the best-in-class digital light meter on the phone. It is intended for personal use and may not fully replace industrial-grade light meters. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://n17dev.web.app/light-meter/policy.html
SANlight
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The SANlight app to control the brightness of SANlight grow LEDs connected to a Bluetooth dimmer. Please note: You'll need a dimmable SANlight LED lamp connected to a SANlight dimmer to make use of this app. For feedback and support please use the "Contact Support" button on the Information screen.
Screenshots
Verdict
The clearest difference is in-app purchases: SANlight at none against Light Meter's 4. On price, update cadence, 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. Light Meter sells 4 in-app purchases, starting at $3.99 per month. SANlight asks for nothing beyond the download.
Light Meter ships an update every 10 months, SANlight every 6 months. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.
| Parameter | Light Meter | SANlight |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (116 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 116 — better | — |
| Update frequency | Every 10 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.5 | 14.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrey Ivankin | Martin Anker |
In-app purchases
Light Meter
- Premium Monthly Subscription3 Days trial$3.991 Month
- Premium Monthly Subscription3 Days trial$4.991 Month
- Premium Lifetime Subscription$19.99
- Premium Lifetime Subscription$29.99
SANlight
No in-app purchases
