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
Simple Date & Time Widget
Transform your iPhone or iPad home screen with Date & Time, a beautifully designed widget that displays the current date and time in elegant, customizable layouts.
$0.99 · In-app purchases
PRICE
$0.99
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Simple Date & Time Widget: 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
Offer more widget types and advanced customization features.
Assumption to check: Limited customization options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement cloud sync for seamless user experience across devices.
Assumption to check: No cloud sync for settings and widgets
Validate with people who use this workflow before building.
Hypothesis 3
Provide a live preview of the widget during customization.
Assumption to check: Absence of a widget preview before adding to home screen
Validate with people who use this workflow before building.
Hypothesis 4
Clarify in-app purchase options and ensure features are clearly communicated.
Assumption to check: In-app purchase confusion
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
Transform your iPhone or iPad home screen with Date & Time, a beautifully designed widget that displays the current date and time in elegant, customizable layouts. **Key Features:** **Multiple Widget Sizes** - Small widget: Perfect for quick glances at the time and date - Medium widget: More detailed view with additional information **Smart Progress Bar** - Visual progress indicator for your daily schedule - Customizable start and end times - Select specific days of the week - Perfect for tracking work hours **Easy Customization** - Intuitive settings interface - Real-time preview of your widget - Changes apply immediately - Portrait-locked settings for comfortable configuration **Perfect For:** - Professionals tracking work hours - Students monitoring study time - Anyone who wants a beautiful, functional clock widget - Users who prefer customizable home screen widgets
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
react-navigation
expo-color-picker
react-native-gesture-handler
zustand
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.
