Zone Meter vs Shared Album Saver
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Zone Meter
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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.
Shared Album Saver
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Shared Album Saver is a local-first photo utility for checking whether photos and videos from shared albums have already been saved to your personal photo library. It is useful when: - A family, travel, event, or baby album contains many shared memories and you want to make sure important items are saved locally. - You are preparing to leave a shared album, switch devices, or clean up old albums without comparing every item by hand. - You want to save missing shared photos and videos into your personal library while keeping a clear import record. Key features: - Scan shared albums and your personal photo library on device to identify saved, missing, possible duplicate, and failed items. - Save selected missing photos and videos into your personal library, with a local destination album created for each shared album. - Review import logs and summaries so each import, skip, or failure has a clear reason. - Use the app without an account, cloud upload, or third-party analytics. Try it free: Scan every shared album and complete your first 10 syncs free. Each sync can include all selected photos and videos. A single lifetime purchase unlocks unlimited syncing. There is no subscription. Privacy and photo access: Shared Album Saver needs Full Photos Access to compare shared albums with your personal photo library accurately. If you allow only limited photo access, scan results may be incomplete. Important note: Shared album photos and videos may be shared copies and may be lower quality than the original files. Shared Album Saver saves the currently available shared copies. It does not claim to recover deleted photos or restore original-quality backups.
Screenshots
Verdict
The clearest difference is update cadence: Shared Album Saver at every 3 weeks against Zone Meter's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Zone Meter ships an update every 2 months, Shared Album Saver every 3 weeks. The most recent releases landed on September 5, 2026 and September 18, 2026 respectively.
| Parameter | Zone Meter | Shared Album Saver |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 weeks โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad โ better |
| Requires iOS | 16.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Anderson | ๅฎๅ ่ก |
In-app purchases
Zone Meter
No in-app purchases
Shared Album Saver
No in-app purchases
Questions
Is Zone Meter free?
Is Shared Album Saver free?
Do Zone Meter or Shared Album Saver have ads?
Which is updated more often, Zone Meter or Shared Album Saver?
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