FishRuler: Fish Size Measure

LiDAR AR ruler for fishing

Only for iPhone

$3.99 · Designed for iPhone. Not verified for macOS.

iPhone

Tap the head and tail — your iPhone reads the exact length with LiDAR. No tape measure needed. Works offline at any fishing spot. Measure your fish in seconds — no tape measure needed. FishRuler turns your iPhone into a precision fish ruler: point the camera, tap the head and the tail, and LiDAR × AR reads the exact length instantly. Perfect for checking keeper sizes, following regulations and logging personal bests. WHY ANGLERS CHOOSE FISHRULER • One-tap measuring — tap the snout and the tail, done • LiDAR precision — real depth data from iPhone Pro, not a guess from a flat photo • Instant readout in centimetres, down to 0.1 cm • Drag the markers to fine-tune the measurement live • Works completely offline — no signal needed on remote shores or offshore • From pan-size horse mackerel to metre-class trophies • One screen, zero setup — no account, no ads • 100% private: nothing is recorded, saved or uploaded PERFECT FOR • Shore, pier and boat fishing — check the size right on the spot • Catch & release — measure in seconds, minimise handling time • Size regulations — verify minimum landing sizes before you keep a catch • Personal bests — 0.1 cm resolution leaves no doubt about a new record • Sharing your catch — screenshot the AR measurement over the fish • Cooking — check the size before choosing a recipe HOW IT WORKS 1. Lay the fish on a flat surface 2. Point the camera from above 3. Tap the head, tap the tail 4. Read the exact length — drag markers to adjust if needed REQUIREMENTS FishRuler uses the LiDAR scanner and requires iPhone 12 Pro or later Pro / Pro Max models (or iPad Pro with LiDAR). Your next catch deserves an exact number. Download FishRuler and turn your iPhone into the only fish ruler you will ever need.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Now localized into 40 languages • Improved measuring stability and accuracy • Minor bug fixes and performance improvements

Version 1.1

The developer, Yoshiaki Hirokawa, 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
    • Yoshiaki Hirokawa
    Size
    • 4.9 MB
    Category
    • Sports
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 32 more
    • English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
    Age Rating
    4+
    Copyright
    • © 2026 Netflowers Inc.
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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