CRUMBLE Docs
Launch App

Crumble documentation

Every crumb
counts.

Crumble rounds up the swaps you already make on Solana and puts the change into tokenized stocks. They land in your own wallet, in the same transaction.

You trade a memecoin for $7.42. Crumble rounds that to $8.00, takes the 58 cents, and buys you a slice of NVIDIA, Tesla, Apple, or whatever you picked. The stock token is sent straight to your wallet. There is no vault, no deposit and nothing to withdraw.

That is the entire product. These pages explain exactly how it works, what you are trusting, and what you are taking on by using it.

There is no Crumble contract. We did not deploy a program on Solana, so there is no code of ours between you and your money. One round-up is one ordinary transaction: your swap and your crumb, with nothing in it paying us. You can read all of it on Solscan before you sign, and you should.

Every page

01Getting started

From an empty wallet to your first round-up, in five steps.

 02How it works

The round-up maths, the single transaction, and why one crumb buys one leg.

 03Wallet and custody

What you sign, and why there is nothing to withdraw.

 04Fees

Zero. What Solana charges instead, and why a 1% fee was not worth keeping.

 05The Oven

$CRUMBLE gets bought back and burned, and none of it is paid for by you.

 06Security

No program, no admin key. What you are trusting instead.

 07Solana

The network, Jupiter, and the tokenized stocks the change buys.

 08Risks

The honest list. Read it before you put a cent in.

 09Troubleshooting

Every message the app can show you, and what to do about it.

 10FAQ

The questions people actually ask, answered against the transaction.

 11Glossary

Every word these pages use, in one place.

 12Addresses

Every mint the app will touch, and how to check them.

 13Supported assets

What you can pay with, and the eight stock tokens the change buys.

 14Privacy

No account, no analytics, no cookies, no backend.

The short version

What it doesRounds your swap up to the next $1, $5 or $10 and invests the difference.
What you getTokenized stocks, sent straight to your own wallet.
Who holds themYou. There is no vault, so there is nothing to withdraw.
FeeNone. Crumble takes nothing from the swap or the change.
NetworkSolana.
Where it tradesJupiter, across whatever pools are deepest at the time.