(Simple explanation + concrete examples)

🤔 What is a dApp?

dApp stands for decentralized application.

It's like a classic app (like YouTube, Facebook, or PayPal), but it works thanks to blockchain.

No central server, no company controlling everything.

Power is shared among users and the code is open and transparent.

🧠 How does it work?

A dApp is composed of:

  1. A smart contract : the brain of the system, recorded on a blockchain (Ethereum, Solana, etc.).

  2. A user interface : a site or app like any other.

  3. A Web3 wallet : it’s your identifier and your means to pay/interact

✅ What can you do with a dApp?

Here are concrete examples:


🧩 dApp: 📌 Utility:

Uniswap. ===> Exchange cryptos (DEX)


Aave. ===> Lend or borrow cryptos


OpenSea ===> Buy or sell NFTs


Lens Protocol ===> Decentralized social network


Snapshot. ===> Vote in DAOs

👉 There are thousands of dApps in DeFi, games, NFTs, social networks, etc.

🛠️ How to use a dApp?

Here are the 4 simple steps:

  1. Install a wallet of your choice

  2. Have some cryptos (ETH, MATIC…) in this wallet

  3. Connect to the dApp site

  4. Sign the transactions (with your wallet) to validate your actions

💡 You don’t need to sign up with your email or password.

Your wallet = your account.

⚠️ Precautions

✅ Always check that you are on the right site

✅ Read the transaction fees carefully

✅ Never sign a transaction that you do not understand

✅ Use a secondary wallet if you are testing a new dApp

🎯 In summary

dApps are the apps of Web3.

They allow you to maintain control, act transparently, and avoid intermediaries.

Do you want to exchange, lend, vote, or create? There is surely a dApp for that.

#dApps