GridFix: Perspective Fix

Perspective & Lines Correction

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Draw a few lines to straighten crooked shots. All correction tools free, plus a live-corrected camera. Subscribe for unlimited exports, full res, RAW and full EXIF. 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/

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This update - Five new interface languages: Simplified Chinese, Korean, German, French and Spanish. Eight in total, alongside Traditional Chinese, English and Japanese. Switch anytime in Settings. - Your camera allowance at a glance: the shots remaining today now show right above the shutter (10 free saves a day; unlimited with a subscription) - Clearer subscription page: all seven benefits are now listed, including HEIF/MAX capture formats and video recording - Privacy improvement: free-tier exports no longer carry lens settings, exposure data or GPS location. Only the capture date and orientation are kept. Subscriber exports keep full EXIF. - Other interface refinements

Version 1.2

The developer, PEI-CHUN CHAO, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • PEI-CHUN CHAO
    Size
    • 5.4 MB
    Category
    • Photo & Video
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • iPad
      Requires iPadOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    Languages
    English and 7 more
    • English, French, German, Japanese, Korean, Simplified Chinese, Spanish, Traditional Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    • GridFix 訂閱（年繳） $14.99
    • GridFix 訂閱（月繳） $2.99
    • GridFix 終身買斷 $39.99
    • Learn More
    Copyright
    • © 2026 Pei-Chun Chao
  • Privacy Policy

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