Everybody here compares CoMaps with OsmAnd, but for me most interesting part of article is different. Their bottleneck was not rendering or routing, it was that

Everybody here compares CoMaps with OsmAnd, but for me most interesting part of article is different. Their bottleneck was not rendering or routing, it was that every map update needed new app release, so it had to pass through app store review. They decoupled this, processing went from 10 days to about 3, now fresh data weekly for whole planet, and around 35 hours when emergency is declared. Very unglamorous engineering, and it is what actually made buildings traced in Tasking Manager reach people standing in the rubble. Also worth to say: you can help with this part from home. During activation the tracing is done from satellite imagery, local knowledge is not required.