Cairn

Photo & Video

Only for iPhone

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

iPhone

Cairn lines up each new photo with the previous one, so a series taken over weeks or months actually looks like the same shot. The app aligns camera framing. It does not diagnose anything, measure treatment outcomes, or provide medical advice. Open the camera and a transparent copy of your last photo appears over the live view. Match the edges, take the shot, and it joins the project's timeline. That is the whole idea: the framing stays put, so the change is the only thing that moves. WHAT IT IS FOR A plant on the windowsill. A room mid-renovation. A beard growing out. A wall being tiled. Anything that changes too slowly to notice day to day, but unmistakably between the first photo and the fortieth. SEE THE CHANGE Compare any two dates side by side, with a slider, or as a fade. Export a still, an animation, or a video and the alignment holds all the way through. STAY ON SCHEDULE Set a reminder per project — daily, weekly, every two weeks, or monthly — so the series does not quietly stop after week three. PRIVATE BY DESIGN No account. No ads. No cloud upload. Your photos stay on your device, and the app works with no network connection at all. FREE Two active projects, the ghost overlay, alignment grid, side-by-side, slider and fade comparison, and standard image exports. CAIRN PRO — ONE PURCHASE, NOT A SUBSCRIPTION Unlimited active projects. Timelapse video, home screen widgets, and the edge overlay during capture. 4K exports, PDF reports, GIFs, and custom reminder intervals.

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

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    Information

    Seller
    RIZGAR TEIMOURI
    Size
    5.6 MB
    Category
    Photo & Video
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 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 Swedish
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Rizgar Teimouri
  • Privacy Policy

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