Complete short surveys while standing in line, or waiting for a subway. Get rewarded with Google Play or PayPal credit for each one you complete.
Cost / License
- Free
- Proprietary
Application type
Platforms
- Android
- iPhone
- Android Tablet
- iPad




CastarSDK is described as 'We are a team focused on providing developers with innovative app monetization solutions. By integrating our SDK, your app can realize a steady passive income without compromising the user experience. Earn up to $500 USD per 1,000 effective exposures, with earnings based on the' and is an app in the development category. There are more than 25 alternatives to CastarSDK for a variety of platforms, including Android, Web-based, iPhone, Windows and Android Tablet apps. The best CastarSDK alternative is Google Opinion Rewards, which is free. Other great apps like CastarSDK are NiceHash, Honeygain, Earnweb and Kryptex.
Complete short surveys while standing in line, or waiting for a subway. Get rewarded with Google Play or PayPal credit for each one you complete.




NiceHash is hashing power marketplace where you can mine altcoins and get paid in bitcoins or you can buy hashing power from other miners (cloud mining)


Honeygain is an application which, when turned on, allows you to reach your unused internet’s full potential by making your device a gateway.




Earnweb.com is a platform where you can earn money by completing various tasks such as surveys, games, cashback, and more. The site offers fast and convenient withdrawal options such as PayPal, cryptocurrencies, gift cards and much more.

Kryptex mines cryptocurrency and pays you bitcoins or real-world money. We've made things amazingly simple: just let Kryptex work and get paid.


PaidPoints is one of the best GPT websites to earn free money online. Minimum withdrawal is low at $1 so you can cash out quickly. Multiple offerwalls. You can earn money from apps, games, paid survey, websites, quiz, video, cashback & more.




Quicken is a prominent personal finance software in the United States, designed to simplify the management of your financial matters. It provides a comprehensive platform to monitor spending, maintain daily finances, and adhere to a budget.




Passive income from your devices Take advantage of the time your devices are left idle by earning money big and securely! A simple and safe additional income stream Get paid via PayPal or Amazon Gift Cards.






GrabPoints is a free app that allows users to earn points or cash rewards by completing surveys. With over 10 million members, it is a large online market research platform. Users sign up, fill out their profile, and receive an initial 1,000 points.




With Pawns.app, you can start making money online in just a couple of minutes. Simply install the app on your desktop or mobile device and register for a free account. Sharing your internet connection with us offers a 100% passive income source!




Earn free gift cards & get cash back by snapping your grocery, shopping & restaurant receipts with Fetch Rewards, the #1 rewards app.



