Comparison

GridFix vs Plumb.cam

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

Head to head
About

GridFix

Features
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Tilt your camera up at a building and the verticals lean inward. Let your hand tip and the horizon goes crooked. GridFix fixes this the most intuitive way possible: draw guide lines along the edges that should be straight, and the app computes the perspective correction that makes them truly vertical and horizontal. And now, you can get it right at the moment you shoot. LIVE-CORRECTED CAMERA - The corrected image shows live in the viewfinder. What you see is what you get, no guesswork afterwards - A tilt readout shows your pitch and roll at all times - Correct verticals only, or auto-level the horizon as well - Pinch to zoom, EV compensation scale, long-press AE/AF lock, self-timer, volume-button shutter - Level sensor calibration: a fixed offset from your case or sensor tolerance is measured once and subtracted from then on - The session gallery lets you review shots, compare with the original, or send one straight into the editor EDIT IMPORTED PHOTOS - Guide-line correction: no blind slider fiddling, just show the app which lines should be straight - Double-tap to zoom: magnify right where you are working and trace window frames and beams precisely - A loupe keeps the edge visible while you drag, positioned for right- or left-handed use - Lens distortion correction: fixes the outward bow of ultra-wide edges, which perspective correction alone cannot fix - Fine-tuning: adjust every axis manually after the correction - Crop, rotate, flip, and auto-trim the blank edges correction leaves behind - Edit history: every session is saved automatically, so you can reopen and continue any time IMPORT AND EXPORT - Import from Photos, Files and iCloud Drive, or share into GridFix from any other app - Export JPEG, HEIF, PNG or TIFF, at original resolution or a custom size - Everything runs on your device: no account, no network, your photos never leave your phone FREE AND SUBSCRIPTION Every correction tool is free: guide lines, lens distortion, fine-tune sliders, cropping and the live-corrected camera are all fully usable, with unlimited viewfinder time. The limits are only on output: 3 editor exports a day, 10 camera saves a day, both at up to 2048px on the long edge, JPEG, without capture info or location (the capture date and orientation are kept). Subscribing unlocks: - Unlimited exports and unlimited camera saves - Original-resolution export (up to 48MP; the free tier caps the long edge at 2048px) - RAW import (ProRAW, DNG); PNG, TIFF and HEIF export at maximum encoder quality - Full EXIF kept on exports and captures (lens, exposure, location) - Live-corrected video recording (high-bitrate HEVC) GridFix does one thing well: it makes crooked lines straight. No color grading, no filters, no object removal. Available in English, Traditional Chinese, Simplified Chinese, Japanese, Korean, German, French and Spanish. Privacy Policy: https://gridfixapp.com/policy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Plumb.cam

Read full description

Plumb is a camera for architecture, interiors and urban spaces. Automatic perspective correction helps reduce leaning lines, while live filters and photo editing let you refine color and composition. CORRECT PERSPECTIVE. KEEP THE ORIGINAL. Plumb uses camera and motion information recorded at capture to create a separate corrected photo. Turn on live correction preview to see the framing before you shoot, and compare the original with the corrected result. Results depend on capture conditions; when a safe correction cannot be made, the original is preserved. FIND YOUR COLOR AS YOU SHOOT Swipe through live filters to preview the look before capture. Explore built-in styles including Classic, Morandi and Cool Tone, or create your own with curves, HSL and color grading. Try random color generation for inspiration, import compatible LUT files, and pin your favorites for easy access. EDIT FREELY. PRESERVE THE ORIGINAL. Crop, adjust perspective and color, or change filters after shooting. Edits are saved separately without overwriting the original photo or its capture information. Compare the original and edited result, view shooting parameters and edit details, and choose which original, corrected or edited version to save or share. ONE VISIT, ONE ALBUM Use Current Shoot to organize a session, create an album or add photos to an existing one. Browse your Library in a grid or masonry layout, and sort albums by recent updates or creation time. Exported photos automatically use filenames containing the capture time for easier archiving and sharing. LOCAL PROCESSING. YOUR CHOICE. Photos and correction processing stay on your iPhone. Your Library is stored locally by default; choose to save to Apple Photos, share, or enable iCloud Library sync with Plumb Pro. No Plumb account required, no ads and no cross-app tracking. FREE ACCESS AND PLUMB PRO Try automatic perspective correction for free, with an allowance for saving corrected photos. Upgrade to Plumb Pro to remove that allowance and unlock iCloud Library sync. Choose a monthly or annual subscription, or a one-time lifetime purchase. Prices are shown before purchase. Monthly and annual subscriptions renew automatically and can be managed or canceled in your Apple Account settings. iCloud sync requires available iCloud storage. Support: https://plumb.cam/support/ Privacy: https://plumb.cam/privacy/ Terms: https://plumb.cam/terms/ Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

GridFix4 screens
Plumb.cam4 screens

Verdict

The call

GridFix and Plumb.cam are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. GridFix sells 3 in-app purchases, starting at $2.99 per month and Plumb.cam sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

ScorecardNo meaningful differences
GridFix versus Plumb.cam: the parameters behind the verdict, then further details
ParameterGridFixPlumb.cam
PriceFreeFree
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS18.018.0
Further details — not scored
Size5 MB23 MB
Age rating4+4+
DeveloperPEI-CHUN CHAOWuhan QShot Technology Co., Ltd.

In-app purchases

3 purchases

GridFix

Subscriptions2
  • GridFix 訂閱(月繳)$2.991 Month
  • GridFix 訂閱(年繳)$14.991 Year
One-time1
  • GridFix 終身買斷$39.99
3 purchases

Plumb.cam

Subscriptions2
  • Plumb Pro Monthly$1.991 Month
  • Plumb Pro Annual$16.991 Year
One-time1
  • Plumb Pro Lifetime$36.99

Questions

Is GridFix free?
GridFix is free to download, with in-app purchases available.
Is Plumb.cam free?
Plumb.cam is free to download, with in-app purchases available.
Do GridFix or Plumb.cam have ads?
Neither GridFix nor Plumb.cam shows ads.
Which is updated more often, GridFix or Plumb.cam?
GridFix ships an update every 4 days, and Plumb.cam every 4 days. Most recently, GridFix was updated on November 5, 2026 and Plumb.cam on November 6, 2026.

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