FishRuler: Fish Size Measure

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.