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
Customer List
Customer List helps you organize and manage customer contacts on iPhone and iPad
$0.99
PRICE
$0.99
No 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 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 Customer List: 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
Add features like categorization and tagging for better organization.
Assumption to check: Limited functionality for customer management
Validate with people who use this workflow before building.
Hypothesis 2
Implement CSV export for customer data.
Assumption to check: No data export options
Validate with people who use this workflow before building.
Hypothesis 3
Enhance UI with better design and usability features.
Assumption to check: Poor user interface and experience
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate a help section or chat support for users.
Assumption to check: Lack of customer support options
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
Customer List helps you organize and manage customer contacts on iPhone and iPad. Build structured lists with customer names, IDs, and custom info fields — stored locally on your device with no account or internet required. Whether you run a small shop, manage sales leads, or track regular clients, Customer List gives you a simple spreadsheet-style editor built for customer data. Create up to five separate lists, save multiple files, and export or email your lists as PDF whenever you need to share them. Built for speed and privacy, Customer List works 100% offline. Your data stays on your device, under your control. Key features: Track customer names, IDs, and up to six custom info fields per contact Manage five separate customer lists with quick tab switching Save, open, and organize multiple customer list files locally Export lists as PDF or CSV for sharing and backup Email customer lists with PDF attachments directly from the app Works fully offline - no login, cloud, or internet required Optimized layouts for both iPhone and iPad Simple tap-to-edit cells for fast data entry Print customer lists from your device Clean, distraction-free interface built for everyday business use
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
AsyncStorage
react-native-paper
react-navigation
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.
