Stock Average Cost Calculator
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
The precise tool retail investors truly need
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.
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 or Google Play account settings.
The Core Calculator
Add unlimited executed buys per position, with weighted average cost recalculated instantly as you type. See break-even price and recovery-needed percentage on every keystroke, plus a customizable price-target table projecting P&L at +10%, +25%, +50%, +100%, or any percentages you define.
Track Every Position
A 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, with ticker, total shares, and weighted average cost on every row.
The What-If Simulator
Enter one hypothetical buy price and compare four editable buy-size scenarios, each showing projected new average cost, capital needed, and distance back to break-even. Save any scenario as a planned tranche.
Did Averaging Help?
After you mark a position closed, see your realized profit, loss, return, and ROI versus what you would have made holding only your first buy — aggregated across all your trades on the Dashboard.
Everything in the App
- 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
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
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
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.
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.
- 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
- 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
Download Stock Average Cost Calculator
Compute your true weighted average cost, track every buy on-device, and plan your next move before you commit.
Free to download · in-app purchase required for full access · English · Ages 16+ · From Loheden AI Solutions AB
Frequently Asked Questions
The app is free to download, but full access to the calculator, position tracker, what-if simulator, and dashboard 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.
It runs on iPhone and iPad (iOS 18.4 or later), Mac (macOS 15.4 or later with an Apple M1 chip or later), and Apple Vision Pro (visionOS 2.4 or later). It is also available on Android via Google Play.
It computes your weighted average cost across every executed buy you log, recalculated instantly as you type, and shows your break-even price and recovery-needed percentage on every keystroke.
Yes. It is a private, on-device position tracker that persists every buy — no spreadsheets, no sync. The Positions tab shows open and closed trades with ticker, total shares, and weighted average cost on every row.
Enter one hypothetical buy price and compare four editable buy-size scenarios, each showing the projected new average cost, capital needed, and distance back to break-even. You can save any scenario as a planned tranche.
Yes. After you mark a position closed, it compares your realized profit, loss, return, and ROI against what you would have made holding only your first buy, aggregated across all your trades on the dashboard.
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