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
AutoFill – Flash Checkout
AutoFill – Flash Checkout
$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/
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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 AutoFill – Flash Checkout: map the core Productivity 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 smart auto-fill features that minimize manual input.
Assumption to check: Users often find entering information tedious and error-prone.
Validate with people who use this workflow before building.
Hypothesis 2
Add support for various payment gateways to enhance usability.
Assumption to check: Limited support for different payment methods.
Validate with people who use this workflow before building.
Hypothesis 3
Introduce tagging and categorization for saved items.
Assumption to check: Difficulty in organizing saved items.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize fields and details for each saved item.
Assumption to check: Lack of customization options for saved entries.
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
AutoFill – Flash Checkout A Safari extension purpose-built for Apple’s online store, engineered to streamline checkout on iPhone, iPad, and Mac. Cut the steps to a minimum and secure your order faster. Supports both “Ship to Home” and “Pick-up at Store” order types, auto-filling every required field in one click. Key Features • One-Tap Auto-Fill Pre-save shipping addresses, payment details, in-store pickup contact, name, phone, email, etc. Launch-day checkout is now a single tap away. •Multi-Profile Management (NEW) Create and store multiple independent personal profiles. Profiles can be duplicated, deleted, and reordered by drag-and-drop. AutoFill always uses the currently selected profile, enabling instant switching between personal, family, or friends’ information. • Smart Field Mapping Recognizes the exact fields for “Ship to Home” or “Pick-up at Store” forms, cutting down on omissions and format errors. • Manual / Auto Dual Mode • Manual: tap the floating button on the right edge of Safari or press Command+Shift+L to trigger a one-time fill. • Auto: fills the form automatically once the page loads; switch to Manual if you need to edit any fields. Toggle between modes instantly with the switch on the right edge of Safari. • Full Localization UI, labels, and prompts are fully localized in: English · 简体中文 · 繁體中文 · 日本語 · 한국어 · Deutsch · Français · Italiano · Español · Русский · العربية • Privacy First All data is stored locally and can be edited or deleted at any time. New Advanced Features (BETA): · Auto select retail store and pickup time · Smart page refresh · Auto select payment method · Stock alert · Auto click “Continue” How to Use 1. Before launch: open the Safari AutoFill extension and store your “Ship to Home” or “Pick-up at Store” templates. 2. At launch: visit Apple’s online store, choose the order type, and let AutoFill populate every field instantly. Usage Scope • This extension only optimizes the checkout flow within Safari on Apple’s online store. • Supports both “Ship to Home” and “Pick-up at Store” order types. • Does not support other e-commerce sites or in-app purchases. Important Notes AutoFill does not guarantee product availability or successful checkout; success depends on stock levels, network conditions, and Apple’s site rules. AutoFill is not affiliated with, endorsed by, or representative of Apple Inc. Privacy Policy http://www.tigerz.asia/privacy/autofill.html Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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
React Navigation
Zustand
React Native Paper
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.
