AdGate Rewards is an offer wall ad unit that can be placed within a website or ad.
AdGate Rewards allows your users to complete offers in exchange for rewards on your website.
Offers may include, but are not limited to: watching videos, installing apps, signing up for product trials, and completing surveys.
Opportunities available to your users will depend on your website/app, the user's location, the user's device(s), and other factors.
Check out the AdGate Rewards documentation.
For iOS apps you can also check out: iOS SDK
for Android apps: Android SDK