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
NBA Collect by Topps®
NBA Collect by Topps® is the official digital trading card app of the NBA and NBA Players Association! Step into your very own virtual hobby shop and bring your Topps NBA Collection to life with new digital pack relea...
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.2
369 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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 included18 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 NBA Collect by Topps®: map the core Games 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 seasonal events and limited-time challenges to keep content fresh.
Assumption to check: Limited variety of cards and challenges can lead to user boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the purchasing flow and provide clear explanations for what users are buying.
Assumption to check: In-app purchase system can be confusing for users.
Validate with people who use this workflow before building.
Hypothesis 3
Streamline the design and reduce visual clutter to enhance user experience.
Assumption to check: User interface can feel cluttered.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a more intuitive trading system with better matchmaking.
Assumption to check: Difficulty in trading with other users.
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
NBA Collect by Topps® is the official digital trading card app of the NBA and NBA Players Association! Step into your very own virtual hobby shop and bring your Topps NBA Collection to life with new digital pack releases every week featuring your favorite NBA players both past and present! NBA Collect provides the perfect orientation for collectors of all experience and skill levels, offering chances to connect and trade with NBA fans around the world, combine cards to craft into rarer ones, rip digital packs for chances to win physical Topps NBA hobby product, and play collected cards in real-time scoring contests to win in-app rewards and prizes. A slam dunk experience for NBA collectors! • Rip packs of NBA digital trading cards daily • Claim FREE daily bonus Topps NBA cards & coins • Trade with NBA fans & Topps collectors • Complete events for exclusive Topps NBA cards • Climb the XP ladder & progress through in-app Seasons • Connect with fellow NBA trading card enthusiasts Bring your Topps NBA trading cards to life! • Complete Missions to unlock new NBA card content • Play NBA cards in real-time scoring Contests • Combine Topps NBA cards to craft into rarer cards • Track Set completion & earn awards for completed sets • Join Challenges for chance to win physical Topps product • Spin the Wheel for daily card & coin rewards Customize your NBA Collect profile • Show off your favorite Topps NBA trading cards • Earn & set new NBA avatars from all 30 teams NBA Collect by Topps lets you collect your favorite NBA players from every team in the league: Atlanta Hawks Boston Celtics Brooklyn Nets Charlotte Hornets Chicago Bulls Cleveland Cavaliers Dallas Mavericks Denver Nuggets Detroit Pistons Golden State Warriors Houston Rockets Indiana Pacers Los Angeles Clippers Los Angeles Lakers Memphis Grizzlies Miami Heat Milwaukee Bucks Minnesota Timberwolves New Orleans Pelicans New York Knicks Oklahoma City Thunder Orlando Magic Philadelphia 76ers Phoenix Suns Portland Trail Blazers Sacramento Kings San Antonio Spurs Toronto Raptors Utah Jazz Washington Wizards Topps has a long history of capturing the essence of sports through trading cards, and now NBA fans can experience the thrill of Topps collecting like never before. Download NBA Collect by Topps today and start building your NBA trading card empire! For the best experience, we recommend devices be updated to iOS 15 or later. For the latest NBA Collect news: - Twitter: @ToppsDigital - Instagram @ToppsDigital - Facebook: @ToppsDigital - Newsletter: play.toppsapps.com/app/nba
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
Axios
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.
