This app isn't in any of our charts yet.
First release
Explore Chappe's optical telegraph through 12 dispatches and Relay Run
Across a ridge, an arm turns and a distant tower answers. Cevran follows the optical telegraph of Claude Chappe through the years when France sent state messages over the horizon. Charcoal surfaces and sharp green signals give this small historical archive the feeling of a working station ledger. Read twelve focused dispatches on instruments, operators and the limits of daylight communication. In Relay Run, carry a message through three question stations, inspect each decision and review the delivered record. Save articles for another visit and listen with an installed offline English voice. Everything you study and every run you keep stays on your device.
Not enough data yet.
Google Play only. Downloads from daily Top free ranks (or the store's install count); in-app revenue from Top grossing ranks, calibrated on AppTweak's US estimates, or else from downloads; ads from public ad benchmarks. Not reported figures.