Comparison

GrayZone vs MeterGlass

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

Head to head
About

GrayZone

This app acts as a precise light meter for photographers, allowing you to measure light in specific areas of your scene. It helps achieve consistent exposure and accurate tonal representation, especially in challenging lighting conditions.

Highlights
  • Zone System Mode for tonal analysis
  • Real SPOT metering for selected areas
  • Direct exposure control with ISO, shutter speed, and aperture
  • Live preview with native sensor ratio
  • UI color inversion option
  • No ads or data collection
Read full description

GrayZone reads light where you decide — not where your camera guesses. Built by Max of max&douglas — professional photographer with 25 years in editorial and advertising photography. Zone System Mode Measure a reference area first (Zone V), then check where the other tones will fall and their relative EV difference, for precise and consistent exposure. Real SPOT Metering Reads light exclusively in the area you select. Ideal for portraits, complex lighting and critical situations. Calibrated to render the selected area as neutral gray. Direct Exposure Control Set ISO before metering, like a dedicated light meter. Instant precise combinations of shutter speed and aperture. Exposure lock with AE LOCK. Half-stop support for finer control. MANUAL mode with over/underexposure scale. Essential Interface Live preview in your sensor's native ratio. NEW UI color inversion Shows only what you need. Nothing else. Complete Privacy No ads. No photos saved. No data collected or transmitted. For manual shooters — on film or digital. It does not replace your camera. It works alongside it.

About

MeterGlass

Features
Read full description

MeterGlass is a professional light meter built for film and large format photographers. Metering • Average metering and ~1.5° spot metering with a live acceptance-angle readout; pinch to zoom in tighter • Zone System: multi-point capture and placement, scene contrast and N+/N- development suggestions, shareable metering cards • Calibration in 0.1 EV steps against a gray card or a meter you trust Film formats • Nine format masks from 135 to 8x10 (including 6x12/6x17 panoramic) with in-mask metering • Live equivalent focal length per format, portrait/landscape framing, zoom with 5mm detents Exposure • EV, aperture/shutter pairs, exposure compensation, illuminance (lux) and color temperature • Filter factors (yellow/orange/red/ND) and bellows extension compensation, folded into suggestions automatically • ISO 20–25600, apertures f/1–f/256, full/half/third-stop steps Instrument-style interface, six languages, fully offline, zero data collection.

Screenshots

GrayZone4 screens
MeterGlass4 screens

Verdict

The call

The clearest difference is price: GrayZone at $2.99 against MeterGlass's $9.99. GrayZone also leads on update cadence (weekly vs every 3 weeks) and chart position (#161 vs unranked). On ads, in-app purchases, device support and iOS requirement 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

GrayZone costs $2.99 and MeterGlass $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

GrayZone ships an update weekly, MeterGlass every 3 weeks. The most recent releases landed on September 22, 2026 and September 11, 2026 respectively.

Scorecard3 real differences · 8 level
GrayZone versus MeterGlass: the parameters behind the verdict, then further details
ParameterGrayZoneMeterGlass
Price$2.99 — better$9.99
Rating2.8 (5 ratings) — better—
Positive reviews62.5% of reviews—
Number of ratings5 — better—
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#161 — better—
DevicesiPhoneiPhone, iPad — better
Requires iOS18.617.0 — better
Further details — not scored
Size3 MB3 MB
Age rating4+4+
DeveloperMassimiliano Schenetti存滨 崔

In-app purchases

None

GrayZone

No in-app purchases

None

MeterGlass

No in-app purchases

Questions

Is GrayZone free?
GrayZone costs $2.99, with no in-app purchases.
Is MeterGlass free?
MeterGlass costs $9.99, with no in-app purchases.
Do GrayZone or MeterGlass have ads?
Neither GrayZone nor MeterGlass shows ads.
Which is updated more often, GrayZone or MeterGlass?
GrayZone ships an update weekly, and MeterGlass every 3 weeks. Most recently, GrayZone was updated on September 22, 2026 and MeterGlass on September 11, 2026.

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