Now available on iOS

Read any book.
Understand every word.

Point your camera at any page. PhotoLang extracts text instantly on-device and streams AI phrase annotations in seconds.

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The old man walked slowly through the cobblestone streets at dusk, his silhouette stretching long against the worn façades of the quarter. A melancholy had settled over him in recent years — slow and inevitable, like the turning of the tide. He was by nature a pensive creature, given to long evenings of solitude and quiet introspection in the dim candlelit rooms of his apartment. The labyrinthine alleys of the old city suited his temperament well.
Annotation
"slow and inevitable, like the turning of the tide"
The tide simile frames his grief as elemental and inevitable — a natural force beyond his control.
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The old man walked slowly through the cobblestone streets at dusk, his silhouette stretching long against the worn façades of the quarter. A melancholy had settled over him in recent years — slow and inevitable, like the turning of the tide. He was by nature a pensive creature, given to long evenings of solitude and quiet introspection in the dim candlelit rooms of his apartment. The labyrinthine alleys of the old city suited his temperament well. He paused before a weathered door.
How it works

Three steps.
Instant comprehension.

No typing. No copy-pasting. Just point, scan, and read.

Step 01

Frame the page

Open the app and point your camera at any book page. Drag the crop corners to frame exactly what you want to scan.

Step 02

Snap & extract

Tap once. Apple's on-device Vision framework reads every word instantly — no internet needed for OCR, no data leaves your phone.

Step 03

Read with AI

Difficult words are highlighted as Gemini streams definitions and translations. Tap any word for the full explanation.

Features

Built for
serious readers.

Every detail designed around how you actually read.

On-device OCR.
Instant. Private.

Text extraction runs entirely on your iPhone using Apple's Vision framework. No photo ever leaves your device for OCR. Zero latency, zero privacy trade-offs.

< 1s
OCR speed
on-device
0
Photos
uploaded

Gemini 2.5 Flash

The fastest, most cost-efficient AI model — built for language at scale.

Live streaming

Annotations appear word by word as Gemini generates them — no waiting.

Every major language

Translate to whichever language you're learning.

Spanish French Japanese German Mandarin + more

Tap any word

Every annotated word is tappable. Full definition + translation in a glass panel, right on the page.

Sign in once. Read everywhere.

Apple Sign-In support, email/password, secure session persistence. Your data stays yours.

Pricing

Start free.
Go limitless.

No trial periods. The free plan is free forever.

Free
$0 / month
  • 5 scans per day
  • On-device OCR
  • AI annotations
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Pro
$5.99 / month
  • 100 scans per day
  • All languages
  • Priority annotation speed
  • Cancel anytime
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