Yes, you can use Aptos for DeFi applications. Aptos is a layer-1 blockchain that supports smart contracts written in Move, a programming language designed for fast and secure transaction execution. Aptos also has a native token called APT, which is used for staking, governance, and fees on the network.
There are already several DeFi applications that have been built on Aptos, such as:
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Liquidswap: A decentralized exchange (DEX) that allows users to swap tokens, provide liquidity, and earn rewards. Liquidswap was the first DEX to launch on Aptos and supports 25+ verified assets, including APT, USDT, USDC, DAI, WETH, WBTC, BNB, BUSD, CAKE, stAPT and tAPT (liquid staking tokens), SOL, ABEL, etc. Liquidswap already has 160k unique users! You can access Liquidswap through the Pontem Wallet or the Liquidswap website.
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Tortuga Finance: A liquid staking platform that enables users to stake APT and receive tAPT tokens in return. tAPT tokens can be used in other DeFi applications on Aptos or exchanged for other tokens. Tortuga Finance also offers single-sided staking and farming options for tAPT holders. You can access Tortuga Finance through the Tortuga website.
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Ditto Finance: Another liquid staking platform that allows users to stake APT and receive stAPT tokens in return. stAPT tokens can also be used in other DeFi applications on Aptos or exchanged for other tokens. Ditto Finance also offers single-sided staking and farming options for stAPT holders. You can access Ditto Finance through the [Ditto website].
These are just some of the DeFi applications that are live on Aptos. There are many more in development or testing, such as AUX Exchange, Argo, SEAM, Mojito Markets, etc. You can keep track of new DeFi projects on Aptos by visiting the [Pontem Network Ecosystem page] or the [MoveMarketCap website]. The Aptos ecosystem is developing very fast, so check back often!