Crypto Calculator & Portfolio

A portfolio and market tracker for people who hold a little crypto and want to know what it is worth and what it cost them. It never connects to a wallet and never asks for an exchange API key. You enter the trades you actually made, and nothing about your holdings leaves your phone. WHAT IT DOES • Portfolio — enter your own trades and see holdings, cost basis, and profit or loss against the live price • Markets — prices, 24-hour movement and 7-day sparklines, with search • Coin detail — interactive price charts over 7, 30, 90 and 365 days • Watchlist — the coins you actually care about, in one place • Alerts — get notified when a coin crosses a price or moves by a percentage you choose • News — headlines from Cointelegraph, CoinDesk and Decrypt, opening on the publisher's own page • Converter — between coins, and between coins and your local currency • English and Indonesian, with light and dark themes PRIVACY There is no account and no sign-in. Your trades are stored in a private database on your device and are never uploaded. There are no ads, no analytics SDK, and the app does not use the advertising ID. The app fetches public market data from CoinGecko, exchange rates from Frankfurter, and news headlines from Cointelegraph, CoinDesk and Decrypt. Those requests carry nothing about you or your portfolio. BUILT FOR CLARITY Gains and losses are never shown by color alone — every change carries an arrow and a signed number, so the app reads correctly if you are color blind. Prices use tabular figures so a number does not jump around as it updates. Amounts are calculated with exact decimal arithmetic, so the totals match what you would work out yourself. WHAT IT IS NOT This app is not an exchange and not a wallet. It cannot buy, sell, send, or hold cryptocurrency, and it never has access to your keys or your accounts. Prices are shown for information only and are not financial advice.