App Overview

Stock Average Calculator Pro icon

Stock Average Calculator Pro

DONALD GENE STRONG · Finance

Take the guesswork out of managing your stock investments

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
1 ratings · Top 5%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

Build your own version

Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included16 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Stock Average Calculator Pro: map the core Finance workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Add support for multiple stocks and detailed analytics.

Assumption to check: Limited functionality for complex calculations.

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to customize themes and layouts.

Assumption to check: Lack of user customization options.

Validate with people who use this workflow before building.

Hypothesis 3

Integrate with stock market APIs to provide live updates.

Assumption to check: No integration with stock market APIs for real-time data.

Validate with people who use this workflow before building.

Hypothesis 4

Implement user accounts for syncing data across devices.

Assumption to check: No user account management for data persistence.

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Take the guesswork out of managing your stock investments. Stock Average Calculator helps you calculate and track the average cost of your stock positions, whether you're averaging down, taking profits, or planning your next purchase. Designed for investors of all experience levels, the app makes it easy to manage multiple buy and sell transactions, instantly recalculate your average cost, and explore potential investment scenarios before making your next move. Key Features • Calculate your average cost across multiple buy and sell transactions • Track your current position, remaining shares, and average cost per share • Save unlimited calculations for quick access later • Search, rename, sort, and organize saved positions • Use What If scenarios to model future purchases before investing • Export calculations to Microsoft Excel (.xlsx) • Create and restore local backups using JSON files • Add notes to individual transactions • Clean, modern interface with Light, Dark, and Automatic appearance modes • Fast, private, and easy to use Your Privacy Matters Your investment data stays on your device. Stock Average Calculator does not require an account, does not collect personal information, and does not upload your calculations to external servers. Whether you're a long-term investor, swing trader, or simply keeping track of your portfolio, Stock Average Calculator gives you the tools you need to make more informed investment decisions.

Written user reviews are not shown here. Check current App Store reviews >

Screenshots

< Scroll to see more >

Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Zustand
React Navigation
React Native Paper
Expo Notifications
BUILD KIT DIFFICULTY
Starter

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.