Put a little aside every month, locked until a date you choose.

Buy on Coinbase, send it to your wallet, lock it. It opens on the day you pick, and nobody can open it earlier. Not even you.

Opens the 10102 app.

How it works

Let Coinbase buy for you

In the Coinbase app: Buy, then Recurring buy. Pick USDC if you want the value to stay steady, or ETH. Your bank money turns into USDC or ETH on its own.
Once a month, send it to your wallet

In the Coinbase app: Send, paste your wallet address and choose the Ethereum network, not any other. Send a small amount the first time. Monthly, not weekly: every lock is a transaction on Ethereum with its own network fee.
Lock it

Open the Save page, pick the amount and the opening date: 1, 3, 5 or 10 years from now. Confirm in your wallet. Each month's lock opens on its own date.

You need a wallet app first. A wallet app on your phone, such as MetaMask, Rainbow or Coinbase Wallet, holds the money. The Save page asks for it when you lock.
No early withdrawal. A lock opens on its date and not a day sooner. Nobody can open it early, including us.
No interest. You get back exactly what you put in.
Not a bank account. No bank holds the money and no deposit protection covers it. It sits in an audited contract on Ethereum, in your name.
Prices move. ETH goes up and down. USDC is made to stay close to one dollar.
Fees. Locking is a transaction, and so is taking it back. You pay the network fee for each, usually a few dollars.