STON.fi is the main DEX of the $TON blockchain providing users with swaps, while StormTrade is a platform with a variety of cryptocurrency assets, and real USDT-backed assets for leveraged transactions.

But, to provide this functionality, platforms need liquidity, which in turn is provided by users. Let's compare which platform provides the best conditions for this.

On STON.fi you provide liquidity in two coins of pair at once. From one side it improves stability and reduces risks as you get a share in the pool, and, accordingly, when the value of one of the coins drops, it becomes more in your share, and the total amount remains unchanged. From the other side, if the coin grows, the share in the pool does not grow.

On StormTrade, in turn, liquidity is only delivered in one selected coin, because of this, the volatility of the coin directly affects you.

Now, let's compare APRs:
$NOT on StormTrade - 15%, NOT/TON pair on STON.fi - 42%
TON on StormTrade - 15%, TON/USDT pair on STON.fi - 26%.
USDT on StormTrade - 20%, AquaUSDT/USDT on STON.fi - 24%.

But, don't forget that all $TON blockchain coins are available for liquidity delivery on STON.fi, and thanks to this you can find much more profitable options, for example:
MAJOR/TON, APR - 77%
STON/USDT, APR - 48%
AIC/USDT, APR - 237%

By the way, on STON.fi there is also a dynamic STORM/TON pairing, the rewards of which depend on the profitability of StormTrade.