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Productivity · iPhone Duo app
Callsign
by Moosa
A busy sign for your desk: fold it into a tent and it faces the room.
iPhone Duo support
Confirmed
- Confirmed in
- App Store description, version 1.0
- Version released
- Price
- Free
- Last checked
Checked by hand against the App Store.
Screenshots
Callsign on the App Store
Screenshots from the App Store. Tap one to see it full size.
On iPhone Duo
Callsign on iPhone Duo
Callsign is a desk busy sign. Fold iPhone Duo into a tent and the sign faces the room on the outer display; fold it to 90° like a laptop and the sign stands on the top half, with the time left and your call controls below.
- Developer
- Moosa
- Category
- Productivity
- Price
- Free
- Platform
- iOS · iPhone Duo
Does Callsign support iPhone Duo?
Yes. iPhone Duo support is confirmed in the App Store description of Callsign version 1.0, released Oct 23, 2026.
How much does Callsign cost?
Callsign is free to download on the App Store.
Who makes Callsign?
Callsign is made by Moosa and is in the Productivity category.
