IOST Win is the best Dapp on IOST right now if you are comparing daily dividends. IOST Win is a volume based gambling site, so unlike a lot of other casinos on Tron like Wink or 888 Tron, IOST Win dividends will be higher when more people are playing.
Typically popular gambling sites like 888 Tron and Wink rely on a lot of users losing bets in order to build up their div pools. But this is only one form of a gambling site.
IOST Win also has a built in leaderboard which pays out users hourly for placing the highest number of bets on IOST. With typical gambling sites you will often see negative dividends because that is the amount of Tron that must be won before anyone is paid their share of the pool.
The current div pool was sitting at around 300k IOST and is paid out hourly which is a nice feature, you don't need to wait 24 to 48 hours for divs.
IOST win also has the first DEX on the IOST blockchain, so IOST Win token holders will receive some dividends from the fees on the exchanges also.
If this sounds too good to be true, then you might have to test it out yourself first. The minimum bet is only 20 IOST or about $0.08 right now. More affordable than most Tron gambling sites for high volume. https://www.iostwin.io/#/
IOST is currently undervalued on the markets imo, but with a growing number of Dapps being released on their blockchain as well as some more Defi applications being released soon. IOST might be a good blockchain to explore some more.
It's hard for me to recommend that anyone should buy IOST when the chart looks like this image below, but it's better to buy at all-time lows than all-time highs. Every single altcoin out there feels like a risk to me now.
Here is there promo video on why IOST might be a good coin to invest in. This is not financial advice.
You can also follow them on Twitter here.
You can also take a look at this game here which just launched their Beta test on IOST about a week ago.
https://medium.com/iost/eternal-fafnir-fight-against-the-furious-and-revengeful-fafnir-7c0ed81736ae