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Duper

Name: Duper
Author: Tiz

Tiz

Lost your phone? Send it "duper".

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FOSS
Free
No ads
No tracking

Android only

Get Duper

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What are these stores? F-Droid, GitHub, Zapstore

Lost your phone? Send it "duper". Why "Duper"? It's French verlan (backwards slang) for "perdu" — meaning "lost". Reverse the syllables: du-per. The app that finds what's lost, named after being lost.

Developer: Tiz
Source code: github.com/sudo-Tiz/Duper
Added to AppCosmos: 9 October 2026
License: GPL-3.0-only