Every Solana transaction
builds your portfolio
Install the Buff extension and every swap, bid, or transfer automatically rounds up and invests the spare change. One Phantom popup. Zero friction.
Available for Chrome, Brave, Edge, Arc, and Firefox.
Setup in 4 Steps
Install the extension
Download for Chrome, Firefox, Brave, Edge, or Arc. Load unpacked in developer mode.
Connect your wallet
Open any Solana dApp, click the Buff icon, and connect Phantom, Solflare, or Backpack.
Sign once
Sign the auth message to generate your API key and self-custodial Buff wallet. That's it.
Every transaction invests
Swap on Jupiter, bid on Tensor — every transaction auto-rounds up. One Phantom popup, zero friction.
Why Buff Extension
The simplest way to DCA into crypto. No dApp integration needed — works everywhere automatically.
One Transaction
Round-up is appended to your existing transaction. One signature. No extra popups.
Any Solana dApp
Works on Jupiter, Raydium, Tensor, Magic Eden — any app that uses a standard Solana wallet.
Self-Custodial
Your Buff wallet is yours. Export the private key to Phantom anytime. We never hold your funds.
Fail-Open Safety
If anything goes wrong, your transaction goes through unmodified. Buff never blocks a tx.
Multi-Asset Allocation
Split round-ups across BTC, ETH, SOL, USDC. Set custom percentages for each asset.
Transparent Fees
Every round-up is visible in your wallet's signing popup. You approve every transaction.
Pick Your Plan
Higher round-up increments mean more invested per transaction and lower fees.
Seed
Sprout
Tree
Forest
Download Buff Extension
Currently available as a developer build. Chrome Web Store and Firefox Add-ons listings coming soon.
Chrome / Brave / Edge / Arc
Manifest V3 · Chromium browsers
Load unpacked at chrome://extensions