GrayZone vs MeterGlass
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
MeterGlass
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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
Verdict
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
GrayZone costs $2.99 and MeterGlass $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GrayZone ships an update weekly, MeterGlass every 3 weeks. The most recent releases landed on September 22, 2026 and September 11, 2026 respectively.
| Parameter | GrayZone | MeterGlass |
|---|---|---|
| Price | $2.99 — better | $9.99 |
| Rating | 2.8 (5 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #161 — better | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Massimiliano Schenetti | 存滨 崔 |
In-app purchases
GrayZone
No in-app purchases
MeterGlass
No in-app purchases





