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
FANS - For Fans & Artists
bringing fans and artist together – fans
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.4
539 ratings · Below Average
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 included18 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 FANS - For Fans & Artists: map the core Social Networking 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
Introduce advanced engagement tools like polls, live Q&A, and events.
Assumption to check: Limited engagement features compared to established platforms
Validate with people who use this workflow before building.
Hypothesis 2
Implement better recommendation algorithms and trending sections.
Assumption to check: User discovery can be difficult
Validate with people who use this workflow before building.
Hypothesis 3
Develop a more robust content moderation system with user reporting.
Assumption to check: Inconsistent content moderation
Validate with people who use this workflow before building.
Hypothesis 4
Add features for creators to monetize their content through subscriptions or tips.
Assumption to check: Limited monetization options for creators
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
bringing fans and artist together – fans from community to commerce, whether you’re online or offline, fans is where every moment with your favorite artist comes to life. ▶ share love and support with your favorite artist see what your artist is up to—from everyday moments to heartfelt messages for fans. and if you’re lucky, you might even get a reply. ▶ official global shop for fans around the world get your favorite merch delivered fast, wherever you are. easily track orders, check delivery updates, and view your event participation all in one place. ▶ stay on top of key dates never miss a birthday, comeback, concert, or tv appearance. ▶ watch official and exclusive content enjoy official media, including exclusive content only on fans. ▶ special perks for fan club members verify your membership to unlock premium content and experiences. ▶ join online and offline events with ease from applying to checking results and attendance, handle it all in one app. ▶ use fans at concerts and pop-ups too skip the line by joining a virtual queue and check real-time sales status while you wait. ▶ connect across languages translate artist and fan messages instantly and enjoy global conversations. ▶ artist communities on fans: j.y. park, 2pm, jun. k, nichkhun, jang wooyoung, lee junho, day6, twice, stray kids, itzy, niziu, xdinary heroes, nmixx, vcha, nexz, kickflip [terms of service and privacy policy] - terms of service: https://app.fans/terms - privacy policy: https://app.fans/privacy - inquiries: [email protected]
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.
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BUILD KIT DIFFICULTY
Expert
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.
