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.
App Overview
Trading Journal: Vault
Every trader has a trade they wish they could forget
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.0
1 ratings · Below Average
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
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.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Trading Journal: Vault: map the core Finance workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Implement advanced filtering and sorting options.
Assumption to check: Difficulty in tracking multiple assets and trades efficiently.
Validate with people who use this workflow before building.
Hypothesis 2
Provide more visual analytics and performance metrics.
Assumption to check: Limited analysis tools for performance insights.
Validate with people who use this workflow before building.
Hypothesis 3
Streamline the trade entry process with templates and suggestions.
Assumption to check: Inconsistent user experience for adding trades.
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate social features for users to share and discuss trades.
Assumption to check: Lack of community features for sharing strategies.
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
Every trader has a trade they wish they could forget. Maybe it was the revenge trade or the FOMO entry at the top. Your trades are more than just numbers; they are patterns, habits, and lessons. Trading Journal: Vault is the trading journal that meets you where you already are: on your phone, taking screenshots of your wins and losses. INSTANT OCR: SCAN, DON'T TYPE Stop wasting time on manual entry. Point your camera at a brokerage confirmation or pick a screenshot from your library. This trading journal uses on-device AI to instantly extract Ticker, Direction, Price, and Quantity. It is compatible with Robinhood, Webull, Schwab, and more. PSYCHOLOGY-FIRST LOGGING A trade without a 'Why' is just noise. Trading Journal: Vault helps you turn noise into signal by tagging the emotions behind the execution, such as FOMO or revenge trading. THE TRUTH ON A CALENDAR Your P&L is mapped onto a color-coded visual grid. This trading journal provides monthly insights, win rates, and total P&L at a glance. TOTAL PRIVACY & PERFORMANCE We don't want your data. Trading Journal: Vault is built using the Neural Engine for on-device processing. No accounts, no cloud, and no subscriptions. Own your trading journal forever.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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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
React Navigation
Axios
Formik
Yup
BUILD KIT DIFFICULTY
Advanced
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.
