App Showcase - Catch posture drift while you focus

Overview

Status: Coming soon to the App Store

Hunch is made for work, study and everyday screen use. Sit or stand upright and tap Calibrate, and Hunch saves that position as the baseline for recognising changes in your posture. Start a session to see your posture live: the face mirrors your head position and changes colour as you drift.

When you slouch, Hunch nudges you with a sound, vibration or notification. Return to your starting position until the face turns green again.

Hunch helps you notice your posture. It does not diagnose, treat or prevent health conditions, and does not replace medical advice.

Track with what you already have

• Compatible headphones: The motion sensors in compatible AirPods and Beats detect head tilt and turning
• Camera: Face tracking on supported iPhone and iPad models detects head tilt, turning and forward movement, with Hunch open in the foreground
• Both together: AirPods detect tilt and turning, while the camera adds forward movement

Technical approach

We built Hunch with Swift and SwiftUI, taking advantage of:

• Core Motion: Head motion from compatible AirPods and Beats
• ARKit: Front camera face tracking, processed on your device
• UserNotifications: Notification nudges, alongside sound and vibration
• GRDB and CloudKit: Session history stored on your device, with optional private iCloud Sync through Hunch Plus
• StoreKit and RevenueCat: Monthly and annual Hunch Plus subscriptions

Key features

Development insights

Hunch is built to notice your posture without needing to know who you are. There’s no account to create, camera frames are processed on your device and never recorded or uploaded, and saved sessions stay on your device unless you turn on iCloud Sync with Hunch Plus.

Headphones and the camera each notice different movements. AirPods and Beats report head tilt and turning, while the camera can also see you lean forward. Hunch can use either on its own or combine them, so you can track with what you already have.

Free and Hunch Plus

Start with the essentials for free: tracking sessions of up to 25 minutes each, today’s sessions and statistics, built-in sounds, vibration and notifications, and fixed nudge sensitivity and timing. No account is needed.

Hunch Plus is an optional monthly or annual subscription. It removes the 25-minute limit and adds full history and statistics, custom sounds and messages, adjustable nudge sensitivity and timing, optional private iCloud Sync and a choice of Light or Dark appearance. Prices are shown in the app before you subscribe.

Support and privacy

Visit the Hunch website for answers to common questions, or go straight to Hunch support or the Hunch privacy policy.