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
SE Marathon de Paris
THE SCHNEIDER ELECTRIC PARIS MARATHON STARTS NOW!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 1.8
20 ratings · Below Average
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 included15 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 SE Marathon de Paris: 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
Implement more accurate GPS tracking and data validation.
Assumption to check: Users report unreliable tracking of runs.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance event detail pages with more interactive content and maps.
Assumption to check: Limited event information provided.
Validate with people who use this workflow before building.
Hypothesis 3
Redesign the interface to be more user-friendly and visually appealing.
Assumption to check: Poor UI/UX leading to confusion.
Validate with people who use this workflow before building.
Hypothesis 4
Create clear explanations and benefits of subscription tiers.
Assumption to check: In-app purchases are unclear.
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 SCHNEIDER ELECTRIC PARIS MARATHON STARTS NOW! Before the 42.195km, discover the new official Schneider Electric Paris Marathon app and its functionalities: • Preparation which is adapted: whatever your level, discover our preparation guides and training plans adapted to each time target time over the distance. • Exclusive prizes: take up our challenges and be rewarded by our official partners to motivate you during your preparation. • Detailed monitoring of your training sessions and above all the possibility to compare yourself with your friends, your family or colleagues also taking part in the event. How does it work? 1. I download the Schneider Electric Paris Marathon app and I log on with my time to account 2. I connect my running app or my connected watch. 3. I start my training! 4. My training sessions are uploaded in the Schneider Electric Paris Marathon app. 5. I can take up the challenges, monitor my preparation and that of my friends. And for spectators? It’s possible to follow your favourite runners. It’s very simple to get involved: • Download the app • Find your favourite runners • Follow their progress on the Big Day and cheer them on! So why don’t you join in?
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
Zustand
expo-location
Firebase
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.
