From GeoPoll page

https://www.geopoll.com/blog/redeem-geopoll-credit/

1. Airtime

GeoPoll has partnered with mobile providers across the world. So, you can redeem airtime to your registered mobile phone number in all the markets we are active in.

The minimum limit to redeem airtime is mostly about the equivalent of USD 0.50, although it could be higher or less depending on your mobile network provider.

As mentioned earlier in this article, SMS and Mobile web surveys are paid for immediately after you complete the survey, as mobile airtime, so there are no limits.

جيوبول تدفع لمشتركيها مقابلا عن أعمال صغيرة مثل ملأ الاستمارات، وهذا المقابل يمكن أن يكون على شكل رصيد في حساب الخلوي