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
World Cup 26 Predictor
THE 2026 WORLD CUP IS ALMOST HERE
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
72 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 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 World Cup 26 Predictor: 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
Incorporate social sharing capabilities to enhance interaction.
Assumption to check: Limited user engagement features such as social sharing.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce gamification elements such as leaderboards and rewards.
Assumption to check: Potential lack of user motivation to make predictions.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clear explanations of premium features and simplify the purchase process.
Assumption to check: In-app purchases may confuse users.
Validate with people who use this workflow before building.
Hypothesis 4
Implement push notifications for upcoming matches to keep users engaged.
Assumption to check: Insufficient notification features for match reminders.
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 2026 WORLD CUP IS ALMOST HERE. ARE YOU READY? With 48 teams, 104 matches, and one dream: lifting the trophy. Football Predictions World Cup 2026 is the ultimate simulator to create, share, and compete with your own World Cup bracket. Whether you're a casual fan or a football expert, our app gives you the tools to predict every result from the group stage all the way to the final whistle. ------------------------------------------------------------ THREE PREDICTION MODES ------------------------------------------------------------ Not everyone predicts the same way. That's why we built three modes: - CHAMPION ONLY: Just pick your winner. Quick, simple, bold. - GROUPS + KNOCKOUTS: Predict every stage: group phase, Round of 32, Round of 16, Quarterfinals, Semifinals, and the Grand Final. - ALL RESULTS: The ultimate challenge. Predict the exact score of every single match in the 2026 World Cup. Start simple. Go deeper. Your call. ------------------------------------------------------------ LIVE COUNTDOWN TO KICKOFF ------------------------------------------------------------ Watch the days, hours, minutes, and seconds tick down to June 12, 2026. Every time you open the app, the excitement builds. Don't miss kickoff. ------------------------------------------------------------ CHALLENGE YOUR FRIENDS ------------------------------------------------------------ Lock in your prediction and share it as an image or text to WhatsApp, Instagram, Twitter, and more. Challenge your friends to beat your picks. Who knows football better? Prove it. ------------------------------------------------------------ KEY FEATURES ------------------------------------------------------------ - Predict results for all 48 World Cup teams - Full bracket from Group Stage to Final - Save up to 10 different predictions - Draft & Confirmed status system - Auto-save: never lose your picks - Penalty shootout predictions - "Did You Know?" football trivia facts - Track real tournament results - Works 100% offline - No account needed: just install and play ------------------------------------------------------------ WHY CHOOSE US? ------------------------------------------------------------ Most prediction apps are complicated or require you to sign up. Football Predictions World Cup 2026 is different: - Privacy first: no account, no data collection beyond what's needed - Available in 8 languages: English, Spanish, French, German, Dutch, Polish, Portuguese, and Italian - Clean, fast, and built for real football fans - Free to use: premium option removes ads for uninterrupted predictions ------------------------------------------------------------ The 2026 World Cup happens once in a lifetime in this format. 48 teams. 16 host cities across USA, Canada, and Mexico. Your predictions. Your legacy. Download now and make your picks before the tournament begins. Will your champion lift the trophy? Privacy Policy: https://jdccmobile.github.io/privacy.html Terms and conditions of use: https://jdccmobile.github.io/terms.html
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/supabase-js
Zustand
React Navigation
React Native Reanimated
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.
