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
Storefronts — App Store Charts
Explore App Store charts worldwide
$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 included16 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 Storefronts — App Store Charts: map the core Lifestyle 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 user reviews and ratings to provide authentic app feedback.
Assumption to check: Apps may not be accurately represented in charts.
Validate with people who use this workflow before building.
Hypothesis 2
Add advanced filtering and sorting options for better user experience.
Assumption to check: Limited filtering options for categories.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clear instructions and a user-friendly subscription interface.
Assumption to check: Subscription management can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to save charts for offline viewing.
Assumption to check: No offline access to app charts.
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
Explore App Store charts worldwide. Search, compare, and track apps on the go! ◆ CHARTS - Browse Top Free, Top Paid, and Top Grossing apps - Toggle Top/New mode on Free and Paid charts - Filter charts by category (including game subcategories) - Switch storefront country/region instantly - Load larger rankings (up to top 200) - Pull to refresh latest chart data ◆ SEARCH - Search App Store apps by keyword - See country-specific search results - Use quick search suggestions to start faster - Open any result directly in the app details view ◆ APP DETAILS - View app info (icon, title, developer, category, price) - View key metrics (rating, review count, publisher) - Browse screenshots (iPhone/iPad) - Read description with tappable links - View version, size, release/update dates, minimum iOS, and content rating - Read release notes (“What’s New”) ◆ REVIEWS - Preview recent reviews on the details screen - Open full reviews view for any app - See rating, author, version, date, title, and review body - Paginate reviews with Previous/Next controls - Refresh reviews on demand ◆ COUNTRIES - Change country from charts, search, details, and reviews - Use quick country picks plus a full supported-country list - Keep selected country saved between sessions ◆ WIDGETS - Plenty of Home Screen widgets - Use Top 1, Top 3, and Top 10 chart widgets - Use a Search widget with fixed query + country - Configure widget country, chart type, and category - Tap widget rows to deep-link into app details Storefronts is not endorsed, created by or have any sort of relationship with Apple or the App Store. It is a third party client. That’s it folks! This text isn't gonna get any more interesting. I mean, I think we've pretty much covered all the good stuff. Still here? Ummmm, ok. How's everything? Good? Cool cool cool. What are you looking for? The app description is over. For real, check out the app. It's way better than hanging out in the App Store this long. Wow, you're dedicated. Do you just love app descriptions? Weird. OK, we're gonna go now. Bye. © FarFetched 2026. All trademarks and copyrights belong to their respective owners. Terms of Service: https://farfetched.global/tally/terms
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
Redux
axios
React Navigation
TypeScript
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.
