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
HSA FSA Receipt Log
HSA FSA Receipt Log helps people keep HSA and FSA receipt records organized on their iPhone without OCR subscriptions, provider logins, or cloud setup.
$4.99 · In-app purchases
PRICE
$4.99
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/
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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 HSA FSA Receipt Log: 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
Incorporate reminders and analytics to enhance user interaction.
Assumption to check: Limited user engagement features for tracking expenses.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to export their receipts to PDF or CSV.
Assumption to check: No export options for receipts.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a more visually appealing design with custom themes.
Assumption to check: User interface may feel basic and uninviting.
Validate with people who use this workflow before building.
Hypothesis 4
Add user forums or Q&A sections for peer support.
Assumption to check: Lack of a community or support system.
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
HSA FSA Receipt Log helps people keep HSA and FSA receipt records organized on their iPhone without OCR subscriptions, provider logins, or cloud setup. Use it to: - create receipt records manually with title, merchant, service date, amount, and claim year - tag each record to a person and category - track pending, partial, reimbursed, or archived status - keep an optional local file reference to the original receipt image or PDF - export a clean CSV or PDF summary for the selected year Why people buy HSA FSA Receipt Log: - private, local-first workflow instead of scattered notes, photos, and spreadsheets - clear status tracking so pending receipts do not get lost - export-ready summary without building a spreadsheet by hand - one-time purchase instead of another ongoing subscription Important: - record keeping only - no claim submission or provider login - no tax, eligibility, reimbursement approval, or payout guidance
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
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Expo
Axios
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BUILD KIT DIFFICULTY
Starter
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.
