GuanZhen: Photo Critique·Gear

GuanZhen is a photography analysis and growth coach for people who are serious about shooting better. It doesn't edit your photos for you — it helps you see your shooting habits, the technical flaws in a shot, what works (and doesn't) creatively, and whether a piece of gear is actually worth buying.

STYLE ANALYSIS — Free, on device Scan your library, read EXIF and basic visual information, and chart how you actually shoot: focal lengths, apertures, ISO, time of day, and which bodies and lenses you really use. It runs entirely on your device — no photos uploaded.

SINGLE-PHOTO CRITIQUE — Free, on device Combine EXIF, pixel analysis, and on-device Vision scene recognition to get an objective technical report for one photo: exposure, sharpness, noise, safe shutter speed, aperture use, and more.

DEEP ANALYSIS — Advanced

• Deep Style Profile: pick 9–15 recent photos to distill your stable aesthetic tendencies, how they're changing over time, and where to go next.
• Six-Dimension Creative Critique: light, composition, exposure & tonality, color, post-processing, and content & expression — to judge whether an image holds up and how to make the next one better. Deep analysis runs in the cloud, only after you explicitly opt in. Submitted jobs keep running in the background, with progress on the Lock Screen and in the Dynamic Island.

GEAR LIBRARY Track the bodies and lenses you own, browse a camera and lens database with new and used market prices side by side, and get recommendations based on your real shooting data — a first kit for beginners, or the next upgrade for what you already own, with optional sensor-format and brand preferences. Scan your library for a gear "return on investment" view that shows which gear actually makes your keepers and which gathers dust.

ACADEMY & GROWTH

• Today's Shooting Opportunity: a full-day sun dial showing night, twilight, golden hour, and current sun/moon position; grant location to add local weather, sunset, stargazing, and visibility guidance (it falls back to on-device sun and moon math when unavailable).
• A photography wiki, illustrated knowledge, and shooting challenges.
• Weekly Smart Training: actionable drills built from the gear you own, your shooting habits, and your recurring weak spots.
• A growth timeline that surfaces your progress and what to practice next.

PRIVACY Local-first by design: style analysis and single-photo critique run entirely on device. Cloud deep analysis only happens after you confirm it; your photos are never uploaded or modified automatically.

SUBSCRIPTION & PURCHASES Core style analysis and single-photo critique are free. Deep analysis, smart training, growth reports, and PDF export are advanced features available via the GuanZhen Pro auto-renewing subscription or with credits.

• Payment is charged to your Apple ID at confirmation of purchase.
• The subscription auto-renews unless turned off at least 24 hours before the end of the current period.
• Manage or cancel anytime in Settings › Apple ID › Subscriptions.
• Privacy Policy: https://guanzhen.top/privacy.html?lang=zh | Terms of Use (EULA): https://guanzhen.top/terms.html?lang=zh (Exact prices and durations are shown in the App and on the App Store.)