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
NetWorth2b StoryBooks +Billing
A robust accounting app with integrated billing and a full set of financial reports, for small business owners who bill clients for professional services rendered
$49.99 · In-app purchases
PRICE
$49.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included15 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.
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 NetWorth2b StoryBooks +Billing: map the core Business 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 interactive charts and visual storytelling.
Assumption to check: Users struggle with tracking net worth effectively
Validate with people who use this workflow before building.
Hypothesis 2
Create intuitive bill management features with reminders.
Assumption to check: Difficulties in managing bills and expenses
Validate with people who use this workflow before building.
Hypothesis 3
Enable users to share their progress and stories with others.
Assumption to check: Lack of community or sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a free trial period for users to explore features before purchase.
Assumption to check: High upfront cost without trial
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
A robust accounting app with integrated billing and a full set of financial reports, for small business owners who bill clients for professional services rendered. The software provides an easy way to: (1) track revenue and expenses; (2) generate balance sheets, income statements and other pertinent financial reports; (3) produce an unlimited number of professional client invoices; (4) send follow-up statements to accelerate the collection of past due client invoice balances; and (5) calculate employee payroll taxes for employee paycheck distribution & payroll tax returns. Also worth mentioning is that the app lives on the user's device for privacy and security. With data breaches being so commonplace, this is an important feature that is more often than not, overlooked. We even considered the fact that many freelancers and small business owners are serial entrepreneurs, which is why our app accommodates accounting for three separate companies. In addition, there are no in-app advertisements and no collection of user data... and best of all... there’s one low price, with no ongoing subscription fees. To learn more, download the free companion eBook that’s available in the apple bookstore.
Written user reviews are not shown here. Check current App Store reviews >
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
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BUILD KIT DIFFICULTY
Intermediate
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.
