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
Ultimate Card Creator
The best custom trading card maker for Sports, FUT, Poke, and Yugioh
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.2
32 ratings · Top 30%
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 included16 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 Ultimate Card Creator: map the core Graphics & Design 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 advanced editing features such as layers and effects.
Assumption to check: Limited customization options for templates
Validate with people who use this workflow before building.
Hypothesis 2
Implement one-click sharing options to social media.
Assumption to check: Difficulty in sharing designs
Validate with people who use this workflow before building.
Hypothesis 3
Optimize image handling and loading methods.
Assumption to check: Performance issues with high-resolution images
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear explanations and trial options for premium features.
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
The best custom trading card maker for Sports, FUT, Poke, and Yugioh. With Ultimate Card Creator, you can create cards for your favorite hockey, soccer, basketball, baseball and football players! There's so many custom card possibilities with 500+ templates. Let's get creating! AI POWERED We harness cutting-edge generative AI to create wonderful images for your cards - it's amazing! LOOKING GOOD Use our artist-designed templates to create customized and shareable trading cards. UCC SPORTS With UCC, you can create cards for your favorite hockey, soccer, basketball, baseball and football players! OTHER TEMPLATES Try our creator awards - for streams, views, followers and other milestones. How about some custom Poke or Yugioh cards? EVERYTHING IN BETWEEN There's lots of general templates for other sports too - let's get creating! TURBOCHARGED Image Search, Instant Background Removal, Cloud Backup - it's amazing! Contact Info Email: [email protected] Terms of Use https://ultimate-card-creator.gitbook.io/ultimate-card-creator/support/terms Privacy Policy https://ultimate-card-creator.gitbook.io/ultimate-card-creator/support/privacy UCC claims no affiliation to official sports leagues, including but not limited to: FIFA, NBA, MLB, NFL, NHL, EPL, ICL, UFC, PGA UCC claims no affiliation to official organizations, including but not limited to: Pokèmon, Yugioh, WWE, YouTube Fair Use Images displayed in the app are for demonstrative purposes only.
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
TypeScript
Supabase
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react-native-color-picker
BUILD KIT DIFFICULTY
Advanced
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.
