Stock Average Cost Calculator
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Description
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 and compare four buy-size scenarios, each editable, showing projected new average cost, capital needed, and distance back to break-even. Save any scenario as a "planned tranche" and it appears in your buy history and as a dashed continuation on the running-average chart.
DID AVERAGING HELP? THE PROOF
After you mark a position closed, Stock Average Cost Calculator runs the comparison few other tools offer: your realized profit, loss, return, and ROI vs what you would have made holding only your first buy. The answer is on the Dashboard and on every Closed Trade Summary, aggregated across all your trades.
YOUR CAPITAL AT A GLANCE: THE DASHBOARD
Total capital deployed across open positions
Average distance to break-even across your portfolio
A pie-chart breakdown of how your capital is split
Winners vs losers, total realized profit and loss, and the "Did averaging help?" headline
WHO IT IS FOR
Retail investors who buy the dip and need fast cost-basis math
DCA (dollar-cost averaging) practitioners tracking every contribution
Long-term holders managing positions through volatile periods
Anyone underwater on a position who wants to plan recovery thoughtfully
SUBSCRIPTION & PRICING
Full access requires an in-app purchase: a weekly subscription, a yearly subscription, or a one-time lifetime purchase. Current prices are shown in the app before any purchase. Subscriptions renew automatically at the end of each period unless cancelled at least 24 hours in advance, and can be managed or cancelled at any time in your App Store account settings.