I am a software developer at the Canadian Avalanche Centre. We recently issued a warning about mobile avalanche search applications that are marketed as avalanche rescue systems. Three smartphone applications are presenting themselves as economical alternatives to avalanche transceivers, the electronic device used by backcountry users to find buried companions in case of an avalanche. The applications are not an adequate replacement for an avalanche transceiver for many reasons , and we are concerned about the use of this software in lieu of a specifically-designed avalanche transceiver. When it is a question of public safety, does the onus fall on the developers, a government agency or the users themselves?