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
TeamBill
This app features:
$1.99 · In-app purchases
PRICE
$1.99
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 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.
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 TeamBill: 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 better UX for tracking individual contributions.
Assumption to check: Difficulty in managing multiple group expenses effectively
Validate with people who use this workflow before building.
Hypothesis 2
Add budget tracking and alerts for overspending.
Assumption to check: Lack of budgeting features
Validate with people who use this workflow before building.
Hypothesis 3
Use automatic categorization for expenses.
Assumption to check: Poor transaction categorization
Validate with people who use this workflow before building.
Hypothesis 4
Integrate visual analytics for spending trends.
Assumption to check: Limited reporting and analytics
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
This app features: - Keep track of things. Add and manage several projects and organize your expenses with others. - The more the merrier. Add and edit members of your project. You can either use other users of your Nextcloud installation or add “simple members” to your project. - Simplified balance overview: "who owes whom" including simplified tap to settle. - All expenses in one place. Add a bill in seconds by entering amount, payer and notes. - Add structure to your lists. Use categories and payment methods to stay organised and consistent across your team. - A simplified balance overview so your team can settle up faster. Data protection & security: - Access data is only used to connect to your server. - No advertising, no tracking. This app works offline. For online synchronisation, it requires an installation of Nextcloud and Cospend (tested and compatible with Nextcloud Hub 32.0.3 and Cospend 3.1.6). This app is an independent client and has no official connection to Nextcloud GmbH or the Cospend project. ‘Nextcloud’ and ‘Cospend’ are trademarks/designations of their respective rights holders.
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
Supabase
Zustand
React Navigation
React Native Reanimated
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.
