A few suggestions
This is quite an informational app and can help people a lot with reducing their eco footprint but there is an ad every 30 seconds and each second only gives the bare minimum amount of information. I suggest instead of interrupting people from learning you could make it so they had to watch an ad to unlock different eco friendly things they could do and not send so many ads when they want to learn. I also suggest adding a bit more information to each item. I love what this app is doing and I highly support it for everyone to try but informational things should give you enough time to actually read them.