Comparison

KEMS vs LUX Meter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

KEMS

Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

KEMS4 screens
LUX Meter4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
KEMS versus LUX Meter: the parameters behind the verdict, then further details
ParameterKEMSLUX Meter
PriceFreeFree
Rating—5.0 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size36 MB3 MB
Age rating4+4+
DeveloperKedros, a.s.Yannick Binay

In-app purchases

None

KEMS

No in-app purchases

None

LUX Meter

No in-app purchases

Questions

Is KEMS free?
KEMS is free to download, with no in-app purchases.
Is LUX Meter free?
LUX Meter is free to download, with no in-app purchases.
Do KEMS or LUX Meter have ads?
Neither KEMS nor LUX Meter shows ads.
Which is updated more often, KEMS or LUX Meter?
KEMS ships an update every 3 months, and LUX Meter every 3 days. Most recently, KEMS was updated on October 7, 2026 and LUX Meter on October 10, 2026.

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