Spareline

Invest your spare change.

Round a swap up. Give the difference a destination in a basket of stock tokens.

Explore how your spare change could work while you trade.

Try it

I swap $

$

Round up to

Let's set up your basket.

Explore a stock-token allocation. Dollar amounts below are calculated from your inputs, not holdings.

Build your basket

Choose the split. Weights must add up to 100%.

Capture rules

Set a ceiling before considering automatic round-ups.

Weekly cap ($)

Funding route

Trade calculation

Use your own price assumption. This is not a market quote.

DirectionAsset

Amount (dollars to buy, units to sell)Your price per unit ($)

Round up to nearest

Invest extra

Max slippage assumption

Follow on X ↗

Connect wallet

About Spareline

Round a swap up. Give the difference a destination in a basket of stock tokens.

What does a round-up calculate?

The difference to the next $1 or $5 boundary. An exact multiple contributes nothing. The basket splits that difference by your chosen weights. Calculations exclude fees and price changes.

Does connecting invest my money?

No. Connection only reads your account and actual network. This site does not request signatures, spending allowances or transactions. Investment execution is coming soon.

What do the network tabs mean?

They retain the source concept's stock-token and Bitcoin allocation contexts. They do not switch your wallet. Wallet connection targets Robinhood Chain mainnet; the label beside your address always shows your actual connected network.

Are these returns or balances?

No. Basket amounts and trade calculations come from your inputs. They are not holdings, returns or live prices. Small contributions can still lose value.

What is $SPR?

A proposed brand ticker. It is not an issued or registered token. There is no contract address or token purchase here.