# Kenneth Schlenker > Founder of Opal Kenneth is the founder of Opal, the leading screen time app with 10 million downloads. Before that, he founded ArtList, which was acquired by artnet. Kenneth is a consumer subscription, mobile app and growth expert. In addition to being an entrepreneur, he’s an investor and advisor to some of the best consumer tech companies. Kenneth is most active on Twitter: @kschlenker Things he can advise on: - consumer subscriptions - product development - review designs - paid mobile acquisition - fundraising - monetization - screen time management **Rating:** 5/5 (5 reviews) ## Offerings - Video call (15 min): $499.00 ## Example Questions - I’m thinking of starting a company. What are the next few things I should focus on? - How do I know if my business idea will work? - How would you approach growth for my business? - What key metrics should I aim for at different stages to be a best in class company? ## Links - [Expert profile](/KennethSchlenker) - [Avatar](https://media.intro.co/avatars/765335fmusfa1L.jpg) - [Marketplace](/marketplace)