Marketing your application is crucial when developing a mobile app, as it's the stage where you reach potential users and grow your user base. With over five million apps on the App Store and Google Play combined, competition is intense, making different marketing techniques necessary to overcome this challenge. Cost Per Install (CPI) networks allow ad campaigns that target desired audiences, prompting installs and increasing MAU and app store chart visibility. CPI networks take popular CPM and CPC models a step further by charging only when the user installs the app. These channels guarantee reaching high-quality users and measuring actual ROI for marketing efforts and budgets. The industry is growing rapidly, with a multi-billion dollar market, and 80% of top-grossing developers planning to increase spend on app-install ads in the next year. Various platforms, such as Facebook App Install ads, Universal App campaigns, and promoted app pins, offer unique solutions for reaching target audiences and driving app installs. These platforms provide extensive targeting options, measurable ROI, and high-quality user acquisition. The market is dominated by major players like InMobi, Mobvista, PropellerAds, Adcash, and Minimob, which offer comprehensive solutions for mobile marketing, ad mediation, and user acquisition.