A focused calculator app for stock and crypto investors.

BullCalc brings four of the calculations you actually use into one app. From dollar cost averaging (DCA) and profit targets to split-order strategies — every result is fee-adjusted so it matches what you really pay and earn.

■ Four Calculators

· Average Down (DCA) Calculator
Enter your current holdings (quantity and average price) plus an additional buy. Get the new average price right away. Add a current price to also see P&L amount and return rate.

· Profit / Target Price Calculator
Two-way calculation. Enter a target price to get the return rate, or enter a target return to get the required price. Quick-pick chips: +5%, +10%, +15%, +20%, +30%.

· Max Position Calculator
Enter your budget and price per share. See the maximum quantity you can buy (fee-inclusive) and the remaining balance.

· Split Buy / Sell Calculator
Set a base price, number of rounds, and interval (%). Get a table of price and quantity for each round. Switch between BUY and SELL modes.

■ Portfolio Dashboard

Saved records are grouped by symbol with P&L tracking. Enter the current price to see market value, profit/loss, and return rate update. A per-symbol P&L bar chart lets you compare positions at a glance.

■ Accurate Fee Calculation

Both buy and sell fees are factored into every calculation. Set a default fee rate once and it applies across all four calculators.

■ Auto-Save (Draft)

Closed the app mid-calculation? Your inputs are saved automatically. Open the app again and pick up exactly where you left off.

■ Multi-Currency

15 currencies supported: KRW, USD, EUR, JPY, CNY, GBP, HKD, SGD, TWD, INR, BRL, MXN, VND, IDR, AED.

■ Other Features

· Dark mode (follows system setting)
· CSV export (share trade history as a spreadsheet)
· Locale-aware P&L colors: red-up / blue-down for East Asian markets (KR, JP, CN, TW, HK), green-up / red-down elsewhere

■ Who is it for?

· Stock and crypto investors who calculate average prices often
· Traders running split-buy or DCA strategies
· Anyone who wants fee-inclusive, realistic profit calculations

EF lab.

Additional Information