ADCA - Knobs
Reference
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Point your camera at an antique doorknob and find it in the ADCA archive.
The Antique Doorknob Collectors of America has catalogued over 4,000 doorknobs since 1981. This app puts that archive in your pocket — and lets you search it by sight.
IDENTIFY BY CAMERA
Frame a knob in the ring and the app matches it against the full archive. No account, no signup, no internet connection required — the entire catalog and the matching model live on your phone.
BROWSE THE ARCHIVE
Every knob, organised by ADCA's classification system. Search by name, ID, or manufacturer.
HELP IMPROVE IT
If the app gets it wrong, you can point it at the right knob. If a knob's photos are poor, you can add a better one. Contributions are reviewed by ADCA before anything is accepted.
Built for collectors, dealers, restorers, and anyone who has ever wondered what's on the door in front of them.
The Antique Doorknob Collectors of America is a nonprofit organisation dedicated to the study and preservation of ornamental hardware.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
redesign look and feel
The developer, Dvijan LLC, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DVIJAN LLC
- Size
- 71.6 MB
- Category
- Reference
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © ADCA