Stock Average Cost Calculator

Stock Average Cost Calculator is the precise tool retail investors truly need. Compute your true weighted average cost across every stock buy, plan dips with side-by-side what-if scenarios, and see whether averaging down is actually working, from a clean dark interface that respects your privacy.

Stock Average Cost Calculator is a paid app. A one-time purchase or an auto-renewing subscription is required to use the calculator, tracker, what-if simulator, and dashboard.

Most "average cost" tools stop at one computation. Stock Average Cost Calculator remembers every buy you log, simulates the next one before you commit, and quantifies your strategy after every trade. It is a position-tracking layer wrapped around a broker-grade cost-basis calculator.

THE CORE CALCULATOR

- Add unlimited executed buys per position, no arbitrary limit
- Weighted average cost recalculated instantly as you type
- Break-even price and recovery-needed percentage on every keystroke
- Customizable price-target table with projected P&L at +10%, +25%, +50%, +100%, or any percentages you define
- Pick your display currency from USD, EUR, GBP, or kr
- Save the calculation as a tracked position the moment you are done

TRACK EVERY POSITION

Stock Average Cost Calculator is your private, on-device position tracker. Every buy persisted, no spreadsheets, no sync, no manual re-entry. The Positions tab shows open and closed trades at a glance.

- Ticker, total shares, weighted average cost on every row
- "Last buy vs your average" line, color-coded amber when you averaged down and green when you averaged up
- Tap an open position to open Position Detail with chart and tranche history
- Tap a closed position to see realized P&L and the "Did averaging help?" comparison
- Swipe to delete

POSITION DETAIL: THE FULL STORY OF EACH TRADE

For every open position you see:

- Current weighted average cost with an animated count-up on entry
- Total shares and capital deployed
- Tranche history showing the running average after each buy
- A running-average step chart that visualizes how your cost basis has evolved
- Edit the ticker any time without losing your buy history
- Add another buy, run a what-if, or mark closed, all from one screen

PLAN BEFORE YOU BUY: THE WHAT-IF SIMULATOR

Stock Average Cost Calculator includes a What-If Simulator few averaging apps offer. Enter one hypothetical buy price