Every platform,
one screen.
4tune pulls your balances, fees, and profit from every account you actually use into a single view — without ever sending your keys anywhere but the platforms themselves.
Not yet on the Chrome Web Store
Works with the accounts you already have
How it works
Connect your accounts
Add a read-only API key for each platform you use. Nothing gets sent anywhere except that platform's own servers.
See everything at once
Your total, your allocation, and every fee you've paid — pulled together automatically, updated in the background.
Track it over time
Daily snapshots build into a real trend line, so you can see how things are actually moving, not just today's number.
See what you actually have
One total across every connected platform, broken out by allocation, in the currency you think in. No more adding up five apps in your head to answer "how am I doing."
- Kraken
- Trading 212
- Binance
Know what fees are actually costing you
Fee totals pulled straight from your real trade history on each platform — not estimated, not remembered. See exactly what trading has cost you, in one place.
Watch the trend, not just today
Daily snapshots build into a real performance chart over time — with a simple projection based on your own recent trend, clearly marked as an estimate, never dressed up as a forecast.
Take your data with you
Export your trade history, current holdings, or full net worth timeline to CSV whenever you want — for taxes, your own records, or just because it's your data. No lock-in.
Your keys never leave your browser.
4tune has no server, no database, and no accounts of its own. There's nothing for anyone — including us — to see, breach, or sell, because it's never sent anywhere we control.
Stored on your device only
Everything — your API keys, cached balances, preferences — lives in Chrome's own local storage, on your machine.
Talks only to the platforms themselves
Requests go directly from your browser to Trading 212, Alpaca, Binance, or Kraken — using a key you control.
Read-only by design
4tune never places a trade, never moves funds. The setup guide walks through creating read-only keys for every platform.
Delete it in one click
Disconnect a platform, or uninstall the extension — either way, everything it ever stored is gone immediately.
Before you install
Is this actually safe to connect my accounts to?
Every key you enter is read-only by design, sent directly from your browser to that platform's own servers, and never touches anything we control. There's no server or database on our end for anything to leak from. Full detail in the Privacy Policy.
Does it cost anything?
4tune itself is free. It doesn't place trades or move funds, so the only costs involved are whatever your platforms already charge for trading — 4tune just shows you those numbers in one place.
Which platforms are supported?
Trading 212, Alpaca, Binance, Kraken, and Kraken Futures today. More may be added later.
Can I remove my data later?
Yes — disconnect any single platform whenever you want, or uninstall the extension entirely, which deletes everything it ever stored immediately.