KEMS vs LUX Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KEMS
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KEMS – Majte spotrebu energie pod kontrolou Aplikácia KEMS vám umožňuje jednoducho sledovať spotrebu elektrickej energie nameranú vašimi elektromermi. Získajte prehľad o svojej spotrebe v reálnom čase, kontrolujte historické údaje a získajte dôležité informácie o svojich elektromeroch – všetko na jednom mieste. Hlavné funkcie: - Prehľadná vizualizácia aktuálnej aj historickej spotreby - Detailné informácie o jednotlivých elektromeroch - Upozornenia o nameranej spotrebe - Jednoduché a intuitívne ovládanie KEMS je ideálnym nástrojom pre domácnosti, firmy aj správcov budov, ktorí chcú efektívne sledovať a optimalizovať svoju energetickú spotrebu. Zostaňte informovaní. Šetrite energiu. Používajte KEMS.
LUX Meter
This app measures ambient light levels in lux or foot-candles using your iPhone camera. It provides instant feedback on whether a space is too dim, comfortable, or bright enough for various tasks and offers calibration options.
- Lux and foot-candle readings
- Lighting target presets
- Live brightness scale
- Hold mode for measurements
- Session min, average, and max
- Calibration against trusted value
- Private on-device metering
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LUX Meter is a private light meter for quick, practical illuminance checks with your iPhone camera. Measure ambient light in lux or foot-candles, compare rooms and work areas, check desk lighting, find brighter spots for plants, and see whether a space is too dim, comfortable, or bright enough for detailed tasks. Pick a target for your task — reading, office, kitchen, plants and more — and get instant "too dim / good / too bright" feedback as you move the phone. Simple and trustworthy: no account, no ads, no tracking, no photo storage. Features: - Lux and foot-candle readings - Lighting target presets with live in-range feedback - Live brightness scale with plain-language guidance - Hold mode to freeze a measurement - Session min, average and max - Calibration against one trusted lux value - Practical guide with common light levels - Paper-diffuser guidance for incident light - Private on-device camera metering Important: LUX Meter estimates illuminance from camera exposure. Great for quick checks, comparisons, and plant or room-light decisions. For regulated, safety-critical, or professional compliance measurements, use a certified lux meter.
Screenshots
Verdict
The clearest difference is update cadence: LUX Meter at every 3 days against KEMS's every 3 months. KEMS's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
KEMS ships an update every 3 months, LUX Meter every 3 days. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.
| Parameter | KEMS | LUX Meter |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 36 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kedros, a.s. | Yannick Binay |
In-app purchases
KEMS
No in-app purchases
LUX Meter
No in-app purchases









