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
PaniniPal
PaniniPal is the easiest way to manage your soccer sticker collection.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
5 ratings · Top 5%
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 included17 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 PaniniPal: map the core Sports 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
Integrate social features to foster community.
Assumption to check: Limited user engagement features like chat or forums.
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced search and filter options.
Assumption to check: Difficulties in finding specific cards or trades.
Validate with people who use this workflow before building.
Hypothesis 3
Add push notifications for trade offers and updates.
Assumption to check: Lack of real-time updates on trades.
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
PaniniPal is the easiest way to manage your soccer sticker collection. TRACK YOUR COLLECTION • Tap once to mark a sticker as collected, twice to mark it as a duplicate • See your progress at a glance — how many you have, how many extras, how many you're missing • Filter your album by Have, Extras, or Missing with one tap • Bulk-mark an entire team at once, or scan sticker numbers with your camera TRADE WITH FRIENDS • Add friends by username and see exactly what you can trade with them • PaniniPal automatically finds matches — stickers you have that they need, and vice versa • Confirm trades in the app to update both collections instantly • See a full history of every trade you've made NEVER LOSE TRACK OF YOUR EXTRAS • Know exactly how many copies of each sticker you have • See which extras your friends are waiting for • Share your missing list to any app with one tap — great for WhatsApp groups SCAN TO MARK • Point your camera at any sticker number and PaniniPal identifies it instantly • Perfect for marking a whole pack of new stickers in seconds PaniniPal works for any collector — casual fans marking their first pack or serious traders hunting the last few stickers to complete the album.
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
Supabase
react-navigation
react-native-paper
Zustand
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.
