Charnière
A pocket watch for your fold
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Made for iPhone Duo. Tilt the screen to wind a seal, close the phone and the lid counts it down. Two of eight watches are free; the Charnière Pass opens the other six.
Charnière turns iPhone Duo into a pocket watch.
Close your Duo and the cover becomes the watch's lid: engraved metal, lacquer or stone, cut to the cover's own shape, with your initials in a cartouche and a crystal window onto the dial. The hinge knuckles sit on the real hinge, and the camera is set like a jewel.
Open it and one dial lies across both halves, hinged through 12 and 6 like the phone it is on. Fold it like a book and each half takes the light differently.
The hinge is the crown. Stand the phone in laptop pose and tilt the screen to wind a seal, from 5 to 120 minutes, one detent at a time. Close the phone and the time is sealed: the lid counts it down. Open early and, after five seconds of grace, the seal breaks. Close it again to reseal. Every kept seal joins your ledger.
Eight Maisons, each drawn entirely in code, with its own hands, numerals and sound:
- Titane: bead-blasted titanium, like the hinge it hangs on (free)
- Argent: silver, engine-turned clous de Paris and sunburst, blued Breguet hands (free)
- Urushi: black lacquer and gold, with gold that pours into the crease as you fold
- Grand Feu: white fired enamel in a gold case
- Aventurine: midnight glass with copper inside it, and today's moon
- Noyer: walnut burl and brass, for the desk
- Tourbillon: an open movement whose barrel the hinge winds
- Céramique: black zirconia with lume-filled numerals
On the nightstand, stand the closed phone on its edge and the lid stays lit, dimming from 10 pm to 6 am.
Charnière works while it is open. It does not change your wallpaper or Home Screen; iPhone Duo keeps those to itself. On other iPhones, the dial and the seal work with an on-screen crown.
Titane and Argent are free. The Charnière Pass opens the other six Maisons and each new one as it is made: $1.49 a month, or $9.99 a year with a 7-day free trial. The First Series is a single $19.99 purchase of every Maison, sold until 31 March 2027. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period, and can be managed in Settings > Apple Account > Subscriptions.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy: https://charniere-watch.vercel.app/privacy.html
No account, no ads, no tracking. Nothing leaves your phone.
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The developer, Tsz To Suen, 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.
Accessibility
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Information
- Seller
- Tsz To Suen
- Size
- 4 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 27.0 or later.
- iPhone
Requires iOS 27.0 or later. - Mac
Requires macOS 27.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 27.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- First Series $19.99
- Charnière Pass, monthly $1.49
- Charnière Pass, yearly $9.99
- Copyright
- © 2026 Tsz To Suen