Comparison

Picflow vs Zone Meter

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

Head to head
About

Picflow

Streamline creative workflows on the go. Share, review, and collaborate on projects with clients and colleagues. Features include high-resolution image viewing, detailed feedback tools, and professional sharing options.

Highlights
  • Share creative work on the go
  • Review feedback and collaborate
  • High-resolution image zooming
  • Annotate and comment on visuals
  • Customizable professional sharing
  • Intuitive file and gallery management
Read full description

Take your creative collaboration anywhere with the Picflow mobile app. Share your work, review feedback, and collaborate with clients and colleagues on the go. Browse your galleries, zoom into high-res images, and respond to client feedback with tools designed for mobile. Instant access to your work: Quickly find projects, galleries, or images with a powerful search that keeps your work at your fingertips. Faster reviews and approvals: Tag, group, and sort your assets using custom metadata. Update approval statuses or leave comments and annotations in seconds. Precise image review: Pinch, zoom, and swipe through visuals with clarity. Switch between assets smoothly so every detail gets the attention it deserves. Collaboration made simple: Leave anchored comments, attach references, or draw directly on images. With feedback tools like favoriting, drawing, and annotations, it’s easy to get everyone on the same page. Professional sharing: Create and send beautifully designed share links straight from your phone or tablet. Customize titles, descriptions, appearance, and visibility to showcase your work exactly how you want. Effortless file and gallery management: Rename, move, copy, export, or delete images and galleries with intuitive touch controls. Stay in control, keep projects moving wherever you are!

About

Zone Meter

Features
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Zone Meter is a professional light meter for photographers who shoot manual - on film, with legacy lenses, or in the studio. Point your iPhone at a scene and Zone Meter instantly reads the light from the camera sensor, calculating exposure values in real time. Scroll the drum wheels to set your aperture, shutter speed, or ISO, and Zone Meter works out the third value for you. LIGHT METER - Live EV reading from the iPhone camera sensor - Four metering modes: Aperture Priority (Av), Shutter Priority (Tv), ISO Priority, and Manual (M) - Classic drum-roller wheel pickers for aperture, shutter speed, and ISO - Tap anywhere on the live preview to spot-meter a specific area of the scene - Switch between lenses (0.5x, 1x, 2x, 5x) to meter a distant subject with the telephoto - Live colour temperature reading with descriptive label (Tungsten, Daylight, Cloudy, Shade) - EV condition display from Very Dark to Very Bright HISTOGRAM - Live luminance histogram overlaid on the camera preview - tap the chart icon to show or hide - Shadows on the left, highlights on the right - just like every other histogram you know - Colour-coded bars: blue for shadows, white for midtones, amber for highlights - Clip indicators warn when shadows or highlights are being lost - In Manual mode, the histogram shifts left or right to predict how your chosen settings will affect the tonal distribution MANUAL MODE - Set aperture, shutter speed, and ISO independently - nothing is computed or locked - Exposure delta bar shows how far your settings deviate from the metered value - Bar shifts left for underexposure, right for overexposure - consistent with the histogram - Contextual label: Correct exposure, Overexposed by 1.3 stops, Underexposed by 2 stops - Use with the histogram to dial in exposure before you shoot ND FILTER CALCULATOR - Calculates long-exposure shutter speed for any ND filter - Presets for all standard filters: ND2 through ND32000, Little Stopper, Big Stopper, Super Stopper - Custom stop input - Uses the live meter reading or a manually chosen base shutter speed - Warns when exposure exceeds 30 seconds (Bulb mode required) DEPTH OF FIELD CALCULATOR - Hyperfocal distance calculator for any lens and sensor format - 8 sensor formats: Full Frame, APS-C (Canon and Nikon/Sony), Micro 4/3, 1-inch, Medium Format, 4x5, 8x10 - 18 focal length presets from 14mm to 600mm - Shows near focus limit, far focus limit, and total depth of field - Visual range bar showing subject position relative to hyperfocal distance - Contextual advice: tells you exactly how far to refocus to bring infinity sharp STROBE CALCULATOR - Guide number calculator for flash and studio strobes - Presets for speedlights and studio heads from 100Ws to 1200Ws - 8 power settings from Full to 1/128 - Solve for aperture (given distance) or distance (given aperture) - ISO-aware: guide numbers automatically adjust for any ISO - Fill light ratio calculator: instantly shows the aperture difference for 1:1 through 16:1 ratios READING HISTORY - Save and name any meter or strobe reading - Add notes to any saved reading - Share individual readings or export the full history - Organised by name, date, light condition, and exposure values DESIGNED FOR PHOTOGRAPHERS - Clean dark interface designed for use in any light - Metric or imperial measurements (set in Help) - Available in English, Japanese, German, French, Spanish, Italian, and Korean - Full help documentation built in: explains EV, hyperfocal distance, guide numbers, and more - No ads. No subscription. No account required. Zone Meter is the meter you always have with you.

Screenshots

Picflow4 screens
Zone Meter4 screens

Verdict

The call

The clearest difference is ads: Zone Meter at none against Picflow's shown. Picflow's advantage is update cadence (fortnightly vs every 2 months) and device support (3 vs 1). On price, in-app purchases 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

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

UpkeepUpdate frequency

Picflow ships an update fortnightly, Zone Meter every 2 months. The most recent releases landed on September 11, 2026 and September 5, 2026 respectively.

Scorecard3 real differences · 7 level
Picflow versus Zone Meter: the parameters behind the verdict, then further details
ParameterPicflowZone Meter
PriceFreeFree
Rating4.9 (9 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings9 — better—
Update frequencyFortnightly — betterEvery 2 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperPicflowGreg Anderson

In-app purchases

None

Picflow

No in-app purchases

None

Zone Meter

No in-app purchases

Questions

Is Picflow free?
Picflow is free to download, with no in-app purchases.
Is Zone Meter free?
Zone Meter is free to download, with no in-app purchases.
Do Picflow or Zone Meter have ads?
Picflow shows ads; Zone Meter does not.
Which is updated more often, Picflow or Zone Meter?
Picflow ships an update fortnightly, and Zone Meter every 2 months. Most recently, Picflow was updated on September 11, 2026 and Zone Meter on September 5, 2026.

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