Digital smoking cessation with a comprehensive guideline-based app - results of a nationwide, multicentric, parallel, randomized controlled trial in Germany.

The study is the first to provide evidence for the feasibility and efficacy of guideline-based digital smoking cessation provided by a smartphone app for the German statutory health insurance system (SHI). Smoking cessation support by smartphone apps could be broadly distributed and thus bring more smokers in contact with guideline-based cessation support than to date and increase the number of successful quitters substantially.