In Development — Catslator is coming to the App Store. Be first to know when it launches.
iOS App · In Development

Catslator

Point. Read. Understand.

Point the camera at your cat — know what they're feeling in under a second. Real-time body language interpretation, entirely on your device. No account. No cloud. No guessing.

You're on the list. We'll let you know at launch.

No spam — one email when we launch.

Free to start
100% On-Device AI
No Account Required
RELAXED
CONFIDENCE 91%
tail/raised
ears/forward
slow blink
How It Works

Three stages.
Under 500 milliseconds.

Every interpretation runs through a sequential on-device pipeline — no cloud required, no latency waiting on a server.

Stage A
Vision Pipeline

Apple's Vision framework detects 25 named joints across your cat's head, trunk, limbs, and tail — up to 30 frames per second, entirely on the Neural Engine.

→ CatPoseObservation
  25 joints + confidence
  vision normalised coords
Stage B
Semantic Layer

Pure Swift geometry converts joint coordinates into human-readable signals. A ring buffer detects temporal patterns: tail-flicking velocity, asymmetric ear movement.

→ SemanticStateVector
  "tail raised, ears pinned,
   pupils dilated"
Stage C
Inference Layer

Apple Foundation Models — an on-device LLM — interprets the semantic vector and returns a structured emotion card with description and action advice.

→ CatInterpretation
  { emotion, confidence,
    description, actionItem }
Features

Read your cat.
In the moment.

Everything you need to understand your cat right now — no memorisation, no manuals, no cloud subscription.

Live Translator
Point the camera and get an emotion card in real time — label, confidence score, plain-language description, and one concrete thing you can do right now.
Reference Library
16 body language entries across Ears, Tail, Eyes, and Body — with illustrations. Tap any signal chip in the interpretation card to jump straight to the matching entry.
Session History
Every session is saved locally. Browse past readings grouped by session, see emotion trends, and swipe to delete. All data stays on your device — never in the cloud.
100% On-Device
No camera frames are stored or transmitted — ever. All AI runs locally via Apple Foundation Models and Vision. Zero cloud API calls. Your cat's privacy is guaranteed.
Smart Throttling
Interpretations fire when your cat's pose changes — not every 2 seconds on a sleeping cat. Choose Fast, Balanced, or Battery Saver scan frequency in Settings.
No Account Needed
Open the app and start. No sign-up, no email, no subscription gate on day one. A free tier gives you 5 interpretations per day. Upgrade for unlimited access.
FAQ

Common questions

No. Camera frames are processed in memory on your device and immediately discarded. Nothing is recorded, stored, or transmitted. The app has zero cloud API calls — all AI runs locally via Apple's on-device frameworks.

Catslator requires iPhone 15 Pro or later running iOS 26.0+. The on-device language model (Apple Foundation Models) requires the A17 Pro chip or newer. Earlier devices don't have the on-device LLM capability.

Tail and ear detection accuracy targets ≥ 80% in our test suite. The interpretation is grounded in Lili Chin's cat ethology methodology — the most widely respected framework for cat body language. The app shows a confidence score with every result so you always know how certain the reading is.

Yes, free to download. The free tier gives you 5 full interpretations per day — emotion, confidence, description, and action advice. After 5, the emotion and confidence remain visible but the details are locked. Pro unlocks unlimited interpretations: $3.99/week with a 3-day free trial, or $19.99 lifetime.

Catslator uses Apple's VNDetectAnimalBodyPoseRequest which detects cats by skeleton, not by breed or coat colour. It works regardless of colour, pattern, or size. Lighting and camera angle affect detection confidence — the skeleton overlay shows joint quality in real time so you can find the best angle.

Catslator is currently in development. We're targeting a 2026 launch alongside iOS 26. Sign up above and we'll send one email the day it's live on the App Store — no spam.

Early Access

Know the moment
Catslator launches.

One email. No spam. Straight to your inbox when we go live on the App Store.

You're on the list. See you at launch.