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
ReceiptSaverApp
App Store Description:
$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 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 ReceiptSaverApp: 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 faster scanning algorithms and allow manual adjustments.
Assumption to check: Users find receipt scanning inaccurate or slow.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce categorization and search features.
Assumption to check: Difficulty in managing numerous receipts.
Validate with people who use this workflow before building.
Hypothesis 3
Add functionality to export receipts in PDF or CSV formats.
Assumption to check: Limited export options for receipts.
Validate with people who use this workflow before building.
Hypothesis 4
Offer a one-time purchase option alongside subscriptions.
Assumption to check: Subscription fatigue among users.
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
App Store Description: The easiest way to manage your receipts—whether you’re running a business, freelancing, or just staying organized at home. Scan, save, and track every receipt in one place. This app helps you stay on top of your finances without the clutter. Perfect for tax season, client invoicing, or simply keeping personal expenses in check. Built for Real Life: • Scan & Import Receipts Use your camera or upload files from your device. No more losing paper receipts. • Organize by Job or Project Track expenses for each client, project, or home improvement task. • Search & Filter by Month Quickly find receipts by name or date—ideal for audits or budgeting. • Secure File Storage Receipts are saved in your iPhone’s Files app for easy access and backup. • Full Receipt Preview & Sharing Tap to view, export, or send receipts to clients, accountants, or team members. Whether you’re self-employed, managing a small business, or just want to organize household expenses—this app gives you the tools to stay on top of it all.
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
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.
