--Mobile app development - ios, android--Business Canvas Model--Agile-Scrum Development Methodology--Forecast and Planning--Balsamiq mock up tool--Manual Testing, Write Test cases, Test plans--Market Research - Qualitative, Quantitative, Focus groups (Delphi method), Surveys, Questionnaires, internet research--App promotion activities - adcampaigns, tradeshows, online marketing, social media marketing, adwords campaign--SEO--Google Analytics, Flurry analytics--German Language