Lightricks is an app development company based in Jerusalem that has found success with paid apps like Facetune and Enlight. While the paid app model has limitations like competitors releasing free versions and difficulty gaining recognition, it allows developers to earn money from day one and optimize more easily based on direct metrics. Lightricks recommends focusing on great products, influencers, PR and Facebook ads to drive sales, while also experimenting with untested strategies and documenting results. Burst advertising can help new paid apps reach top charts and gain organic users in a cost-effective way.