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
Race Calendar 2026
"Race Calendar 2026" is a simple to use App, which gives quick overview of all Formula 1 events and results
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 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 Race Calendar 2026: 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
Provide detailed race descriptions and user-generated content.
Assumption to check: Limited race information available to users
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more intuitive registration management system.
Assumption to check: Difficulty in managing race registrations
Validate with people who use this workflow before building.
Hypothesis 3
Enhance sharing capabilities with social media integrations.
Assumption to check: Limited sharing options for users
Validate with people who use this workflow before building.
Hypothesis 4
Add notification features for race reminders.
Assumption to check: No reminders for upcoming races
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
"Race Calendar 2026" is a simple to use App, which gives quick overview of all Formula 1 events and results. You can see at a glance the complete race calendar with detailed timetable (local) for each weekend, training and qualifying results, driver and team standings after each race and a lot of other information. The app can work offline. Internet connection is needed only for updating the results and the live timing. Features: • Season Calendar • Training Results • Qualifying Results • Race Results • Driver Standings • Team Standings • Detailed Driver Profiles - Team, Nationality, Titles, Starts, Pole Positions, Podiums, previous Teams, etc. • Detailed Team Profiles - Base, Drivers, Chassis, Engine, Tyres, Debut, Titles, Wins, Pole Positions, etc. • F1 Standings matrix - all results at a glance (just turn the iPhone to landscape mode in the view "Standings" • Flags - The flags and their meaning in F1 • F1 2026 rule changes • Driver and team statistics per season • Detailed timetable for each F1 race weekend - date and time for the training, the qualifying and the race • Track Informations - Number of Laps, Circuit Length, Race Distance, Lap Record, Track Photos. The circuits can be seen in Apple Maps • iPhone/iPad calendar integration - Stay always up to date! Synchronize all F1 events with your iOS calendar with just one click! All schedule changes are automatically synced with your calendar so you never miss a race! • Live Driver Standings • Live Team Standings F1, FORMULA 1, FORMULA ONE, FIA FORMULA ONE WORLD CHAMPIONSHIP, GRAND PRIX and related logos are trade marks of Formula One Licensing BV, a Formula One group company. All rights reserved. This application is unofficial and is not associated in any way with the Formula One group of companies.
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
axios
@react-native-async-storage/async-storage
expo-calendar
react-navigation
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.
