Do I need an account to use the portfolio tracker?

No. There is no signup, no email, no wallet connection. Add a coin and an amount, and the tracker stores everything in your browser using localStorage. Your holdings never leave your device. If you clear browser data, the portfolio is wiped along with it, so use the export feature if you want a backup.

Where does the price data come from?

All prices are pulled live from CoinGecko via our cached API endpoint. The tracker fetches USD price and 24 hour change for every coin in your portfolio in a single request, then recalculates totals on the client. Prices refresh whenever you reload the page or click the refresh button.

How is profit and loss calculated?

If you enter an average buy price (cost basis) for a holding, the tracker computes all time P&L as current value minus cost basis times amount. Without a cost basis, only 24 hour P&L is shown for that holding, derived from the CoinGecko 24 hour change. You can edit cost basis at any time.

Can I track coins that are not in the top 100?

Yes. The search box queries the full CoinGecko coin list, so you can add any of the thousands of tracked coins, including small caps and recent listings. Type a name or symbol and pick the right coin from the dropdown.

Is my portfolio data private?

Completely. Your holdings live in your browser's localStorage and are never sent to our servers. The only thing we send to CoinGecko is the list of coin ids you hold, so we can fetch their prices. We do not log this list and there is no user identifier attached.

Can I export or back up my portfolio?

Yes. Use the export button to download your full portfolio as a JSON file. Use import to load it on another browser or device. This is the recommended way to keep a backup, since clearing browser data will erase the in-browser copy.

How often do prices update?

Prices are cached at the edge for one minute, so multiple page loads in quick succession don't burn rate limit. The tracker fetches a fresh quote whenever you load the page or click refresh. There is no background polling, which keeps the page light and your network quiet.

Crypto Portfolio Tracker: Track Holdings, P&L and Allocation

Total Value -- 0 holdings

24h Change --

All-Time P&L --

Best Performer --

Allocation

Share of total portfolio value by holding.

Holdings

Coin	Amount	Avg Cost	Price	Value	24h	P&L

The portfolio tracker above lets you keep an eye on every coin you hold in one place. Add a coin, enter how much you own, and the dashboard shows total portfolio value, 24 hour profit and loss, and how your holdings are split across different assets. There is no signup, no wallet connection, and no server side storage. Everything you enter stays in your browser.

If you want a quick read on the wider market while you check your holdings, the market overview and crypto fear and greed index are one click away. For a top down view of every major coin’s price, see the live prices page.

How the Tracker Works

A portfolio tracker is a tool that takes a list of holdings (coin plus amount), looks up the current price of each one, and shows you what you have in total. The math is simple. The value comes from solving three small problems well.

Storing Your Holdings

Most portfolio trackers ask for an account. That means an email, a password, and a server somewhere holding a list of every coin you own. For a lot of people that is a non starter. This tracker uses your browser’s localStorage instead, which is a small private store that only the page you opened can read. Nothing goes to a database. Nothing is logged. If you trust your browser, you can trust the tracker.

The downside of localStorage is that it’s tied to one browser on one device. Clearing browser data wipes the portfolio. The export and import buttons exist for exactly this reason. Export to a JSON file and you have a portable backup you can save to a password manager, a USB drive, or any other place you trust.

Pulling Live Prices

Prices come from CoinGecko’s /simple/price endpoint, the same source that powers the rest of the site. When the tracker loads, it sends one request with every coin id in your portfolio and gets back a USD price and a 24 hour percentage change for each. One round trip, no matter how many coins you hold.

We cache the response at the Cloudflare edge for sixty seconds. That means a portfolio you open in two tabs only triggers one upstream call, which keeps everyone within rate limits without slowing the page down.

Computing P&L and Allocation

For each holding, the tracker multiplies amount by current price to get value, then sums every value to get total portfolio value. If you set a cost basis (the average price you paid), the tracker also calculates all time profit and loss as (current price minus cost basis) times amount, summed across the portfolio. 24 hour P&L uses the CoinGecko 24 hour change applied to the current value of each coin.

Allocation is simply each holding’s value divided by total portfolio value, expressed as a percentage. The horizontal bar above the holdings table shows the breakdown at a glance.

Tips for Getting the Most Out of It

Set a cost basis on every holding. Without it, the all time P&L card stays blank. Even a rough estimate of your average buy price gives you a much more useful read on your portfolio than current value alone.
Export your portfolio regularly. Browser data can be cleared by accident, by you, or by a cleanup tool. A JSON export is the only reliable backup.
Use the search to add long tail coins. The dropdown queries the full CoinGecko list, not just the top 100. If you hold a small cap, it’s likely in there.
Check the 24h column for context. A green number under “Value” doesn’t mean the coin is up today. The 24h column tells you whether the holding gained or lost ground in the last day, regardless of when you bought.
Treat the tracker as a personal dashboard, not tax software. It is built for quick situational awareness. For tax reporting you need a tool that records every buy, sell, and transfer, which is a different problem entirely.

Why a Portfolio Tracker Matters

Anyone holding more than two coins quickly loses the ability to keep their total value in their head. Prices move every minute and the math gets fuzzy fast. A tracker takes that load off you. It tells you, in one number, where you stand right now. That single piece of information is the difference between checking the market with a clear head and checking it with anxiety.

It also makes allocation visible. When everything is just balances on a screen, it’s easy to drift into a portfolio that is 80% one coin without noticing. Seeing the percentages laid out forces an honest look at concentration risk. You don’t have to act on it, but you get to choose.

Track your crypto in one place