Comparison

OCA vs Illuminance Meter

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

Head to head
About

OCA

Features
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OCA แอปพลิเคชันจาก งานกิจการองค์กรของผู้บริโภค (Office of the Consumer Organisation Affairs) ภายใต้สำนักงานปลัดสำนักนายกรัฐมนตรี เป็นแอปพลิเคชันสำหรับให้บริการแจ้งสถานะความเป็นองค์กรของผู้บริโภคตามพระราชบัญญัติการจัดตั้งสภาองค์กรของผู้บริโภค โดยผู้ใช้งานสามารถใช้งานแอปพลิเคชันตามฟังก์ชันต่างๆ ได้ดังนี้ - ยื่นคำร้อง - จดแจ้งสถานะความเป็นองค์กร - ติดตามสถานะการจดแจ้งองค์กร - ติดตามข่าวสารประชาสัมพันธ์ - อื่นๆ

About

Illuminance Meter

Transform your iPhone into a professional light meter to measure illuminance in lux or foot-candles. Ideal for photographers, plant enthusiasts, and workplace safety, it provides instant, accurate light readings with various specialized modes and data export options.

Highlights
  • Real-time lux measurement with live gauge
  • Photography mode for exposure value (EV) calculation
  • Plant light mode with recommendations
  • Workplace standards verification
  • Measurement history with export options
  • Spectrum analysis for color temperature and CRI
  • Multiple illuminance unit switching
Features
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PREMIUM — PURCHASE REQUIRED: All features described below are part of Pro and require a purchase: a weekly or yearly auto-renewing subscription, or a one-time lifetime purchase. Point your iPhone camera at any light and read it in seconds: illuminance in lux and foot-candles, color temperature in Kelvin, photographic EV, and PPFD for your plants. One meter, already in your pocket. Most light meter apps do one thing. Pocket Lux Meter is the whole bench: a live illuminance meter you can calibrate against a trusted reference, plus a spectrum view, film-photography exposure tables, grow-light conversion, a room uniformity grid, and PDF/CSV reports you can hand to someone. Readings are honest estimates from your camera — the app tells you so, and calibration keeps them close. WHAT YOU GET • Know in seconds whether your desk hits the 500 lux an office task needs — a live reading with min, max and average that settles as you sweep the room • See any bulb's color temperature in Kelvin, so the "warm white" you just bought actually matches the 2700K lamps already in the ceiling • Walk into a scene with your film camera and leave with a usable exposure — EV turned into ISO, shutter and aperture pairs you can dial straight in • Find out if your monstera is starving: lux converted to PPFD and DLI for the exact light source, matched against ranges for common houseplants from succulents to ZZ plants • Prove a room is evenly lit with the grid uniformity test — measure point by point instead of guessing • Hand a client or facilities team a PDF or CSV report of saved readings, complete with notes, tags and history comparisons PERFECT FOR • Film photographers metering scenes without a handheld exposure meter • Plant owners and growers dialing in LED, HPS, metal halide or fluorescent lights • Facility managers and office planners checking workspace lighting against reference ranges • Anyone comparing bulbs, fixing a dim desk or testing a new lamp WHY NOT JUST BUY A HARDWARE LUX METER? A decent standalone meter costs real money and lives in a drawer. Your phone is already with you. Calibrate this app once against a reference and it stays useful — and it does what a basic lux meter can't: Kelvin readings, exposure tables, PPFD and DLI conversion, uniformity grids and shareable reports. For regulated or safety-critical work, use certified equipment; for everything else, this is the meter you'll actually have on hand. PRIVATE BY DEFAULT Measurements, notes, tags and calibration settings stay in local storage on your device. Camera frames are processed on-device and never saved. No account, no sign-up. PREMIUM (PURCHASE REQUIRED) Pocket Lux Meter requires an active plan. Full access unlocks every tool: the live lux/foot-candle/EV meter, spectrum and color temperature view, photography exposure tables, plant PPFD and DLI mode, grid uniformity, lighting standards, quick test, screen brightness test, smart analysis, history comparison, and CSV/PDF export. Choose a weekly subscription, a yearly subscription, or a lifetime one-time purchase. Localized prices are shown in the app before you pay. Point your camera at the nearest lamp and get your first reading in under ten seconds. Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy Support: support@leanstudio.asia

Screenshots

OCA4 screens
Illuminance Meter4 screens

Verdict

The call

The clearest difference is in-app purchases: OCA at none against Illuminance Meter's 3. OCA also leads on iOS requirement (13.0 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. Illuminance Meter sells 3 in-app purchases, starting at $3.99 per 7 days. OCA asks for nothing beyond the download.

Scorecard2 real differences · 6 level
OCA versus Illuminance Meter: the parameters behind the verdict, then further details
ParameterOCAIlluminance Meter
PriceFreeFree
Positive reviews—0.0% of reviews
Update frequency—Every 3 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size29 MB13 MB
Age rating4+4+
DeveloperTHE PERMANENT SECRETARY, OFFICE OF - PRIME MINISTER OFFLEAN ASIA CO., LTD

In-app purchases

None

OCA

No in-app purchases

3 purchases

Illuminance Meter

Subscriptions2
  • Premium Weekly Plan$3.997 Days
  • Premium Yearly3 Days trial$19.991 Year
One-time1
  • Lifetime$39.99

Questions

Is OCA free?
OCA is free to download, with no in-app purchases.
Is Illuminance Meter free?
Illuminance Meter is free to download, with in-app purchases available.
Do OCA or Illuminance Meter have ads?
Neither OCA nor Illuminance Meter shows ads.

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