Unity Ads - Unity Ads allows to supplement the existing revenue strategy by allowing to monetize thr entire player base.

Google Opinion Rewards - Answer quick surveys and earn Google Play credits with Google Opinion Rewards.

MoPub - MoPub is a mobile monetization platform that helps publishers drive more revenue from advertising and mobile transactions.

Swagbucks - Swagbucks is a loyalty program that offers individuals rewards for engaging in various activities. Users can earn reward points for performing Internet searches, purchasing items from affiliated vendors, or completing polls.

Appodeal - Appodeal is a supply-side platform for mobile apps, that serves and protects publishers rather than advertisers.

Survey Junkie - Survey Junkie is an online community with over 10 million members dedicated to making your voice heard.