Brushed-metal calculator
Enter investment, buy price, sell price for any stock or crypto. We compute units, current value, profit/loss, and % return.
A calculator, not a custodian.
StackCalc is a privacy-first profit/loss calculator for stocks and crypto. It runs the math on your trades, stacks unlimited positions, and tracks live prices in real time — without ever asking for API keys to your exchange, wallet, or brokerage.
Live price tracking
Saved positions are enriched with current market prices every minute (Finnhub for stocks + crypto, CoinGecko fallback).
Two live news tickers
A horizontal stocks ticker (right-scroll) and crypto ticker (left-scroll) on every page, plus two scrollable news cards under the calculator.
Target-reached alerts
Set per-position alerts: % gain over buy, specific price, or your saved sell target. Each fires a celebration banner + browser push + optional SMS/email.
Combined P/L dashboard
See your total live profit/loss at the top of the dashboard, with target comparison and tracked-positions count.
Real asset logos
Saved positions display the official logo for each ticker — Apple, Ethereum diamond, Bitcoin orange, etc.
Customizable tickers
Click any ticker to filter — all, tech-only, finance-only, top blockchains, or majors-only. Saved per-user.
SMS & email alerts
Add your phone number to get text alerts the moment a position hits its threshold. Email notifications too.
Pro subscription · $2/mo
7-day free trial. Unlimited calculations, unlimited saved positions, live tracking, alerts. Cancel anytime in the billing portal.
Admin console
For the owner: user management, role/premium toggles, stats, top stackers, and a private feedback inbox.
Offline calculator
The calculator math runs client-side, so you can crunch numbers on a plane or in a tunnel — even without internet.
No wallet linking, ever
We never ask for exchange API keys, OAuth tokens, or wallet permissions. Four numbers, your math, no custody.