Comparison

Lux Meter vs いまここ

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

Head to head
About

Lux Meter

This tool transforms your iPhone into a professional light meter, measuring illuminance in lux and foot-candles in real-time. It offers exposure calculations, color temperature estimates, and various presets for different use cases, all while working offline and without ads.

Highlights
  • Real-time lux and foot-candle readout
  • Exposure Value (EV) calculation
  • Color temperature (CCT) estimate
  • Spot or average metering
  • Use-case presets
  • CSV export of readings
  • 100% offline functionality
Features
Read full description

Lux Meter turns your iPhone into a professional light meter. Using the camera and the ISO 2720 photographic standard, it measures illuminance in lux and foot-candles in real time. Whether you're setting up studio lighting, checking your desk for eye comfort, dialing in grow lights for your plants or metering a film scene, Lux Meter gives you the numbers the pros rely on. MEASURE • Real-time lux and foot-candle readout with a one-tap unit switch • Exposure Value (EV) and color temperature (CCT in Kelvin) • Spot metering on a reticle in the middle of the camera view, or average metering of the whole frame • Live histogram, min / max / average and a live chart • A/B compare: pin a reading as the reference and see the difference in EV and percent • Lock a reading, and a low-light path that reads below 1 lux ROOM SURVEY (Premium) • Measure a grid of points across a room and see it as a heat map • Average, minimum, maximum and uniformity (U₀), checked against workplace targets for offices, classrooms, workshops, retail and corridors, or your own target • Share the result as a PDF report EXPOSURE CALCULATOR • Set two of aperture, shutter and ISO — it solves the third • ND filter, exposure compensation and a Sunny 16 helper • Cinema mode with frame rate, shutter angle and the 180° rule, plus a depth-of-field calculator (Premium) GROW LIGHT (Premium) • Turn a reading into PPFD and Daily Light Integral (DLI) for sunlight, LED, HPS, metal-halide or fluorescent light • Photoperiod setting and a light guide for low- to high-light plants TARGETS & FEEDBACK • Presets for reading, office, photography, film, plants and aquariums • Target band with an in-range indicator • Optional haptic and audio meter tick that speeds up as the light gets brighter CALIBRATION • Separate calibration for the front and back cameras, with raw and calibrated values side by side • Manual multiplier, plus multi-point calibration across the whole range (Premium) HISTORY & REPORTS • Save single readings or record the light over time, with notes and an optional location tag • Chart and statistics for every recording • PDF reports and CSV export (Premium) LUX METER PREMIUM A one-time purchase, no subscription. Unlocks Room Survey, PDF reports, unlimited history and recording time, CSV export, multi-point calibration, Grow Light, cinema mode and depth of field. MORE • 11 languages with instant in-app switching • Dark design with a light mode, grid overlay, brightness pin and keep-awake A note on accuracy: iOS does not give apps access to the ambient light sensor, so Lux Meter uses camera-based reflective metering (ISO 2720). For the best results, calibrate once against a reference meter. Measure light like a pro. Download Lux Meter.

About

いまここ

Features
Read full description

「いまここ」は、あなたの現在地(緯度・経度)を瞬時に取得し、ワンタップでコピーできる究極のシンプルツールです。 【こんな時に便利!】 ・待ち合わせで自分の正確な居場所を教えたいとき ・地図アプリでの検索や記録に緯度経度を使いたいとき ・アウトドアや釣り、登山などで特定のポイントをメモしたいとき ・緊急時に自分の位置を正確に伝えたいとき 【主な機能】 ・**ワンタップ取得&コピー**: ボタン一つで緯度経度を取得し、そのままクリップボードへ保存します。 ・**スムーズな共有**: コピーした座標は、LINEやメール、各種SNS、地図アプリへ簡単に貼り付け可能です。 ・**初心者にも優しい**: わかりやすいチュートリアルガイド付きで、どなたでも迷わず使えます。 ・**ダークモード対応**: 夜間や暗い場所でも目に優しいデザインを採用しています。 ・**データ移行機能**: 設定のエクスポート・インポートに対応。機種変更時の引き継ぎも安心です。 余計な機能は一切なし。 「今、自分がどこにいるか」を伝えるためだけの、最速・最小アプリです。

Screenshots

Lux Meter4 screens
いまここ3 screens

Verdict

The call

The clearest difference is in-app purchases: いまここ at none against Lux Meter's 1. いまここ also leads on update cadence (every 2 days vs weekly) and iOS requirement (15.0 vs 17.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lux Meter sells 1 one-off in-app purchase. いまここ asks for nothing beyond the download.

UpkeepUpdate frequency

Lux Meter ships an update weekly, いまここ every 2 days. The most recent releases landed on October 29, 2026 and October 20, 2026 respectively.

Scorecard3 real differences · 7 level
Lux Meter versus いまここ: the parameters behind the verdict, then further details
ParameterLux Meterいまここ
PriceFreeFree
Rating4.5 (6 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings6 — better—
Update frequencyWeeklyEvery 2 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size9 MB23 MB
Age rating4+4+
DeveloperAlper Sumer GucTOMOKAZU GOTO

In-app purchases

1 purchases

Lux Meter

One-time1
  • Lux Meter Premium$2.99
None

いまここ

No in-app purchases

Questions

Is Lux Meter free?
Lux Meter is free to download, with in-app purchases available.
Is いまここ free?
いまここ is free to download, with no in-app purchases.
Do Lux Meter or いまここ have ads?
Both Lux Meter and いまここ show ads.
Which is updated more often, Lux Meter or いまここ?
Lux Meter ships an update weekly, and いまここ every 2 days. Most recently, Lux Meter was updated on October 29, 2026 and いまここ on October 20, 2026.

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