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
Sniper for ebay bid auctions
Ever wondered why you are always outbid at last minute at eBay?
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
4,297 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 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/
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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 Sniper for ebay bid auctions: map the core Shopping 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
One-tap Apple Pay checkout
Assumption to check: Slow checkout process
Validate with people who use this workflow before building.
Hypothesis 2
AI-powered search with filters and suggestions
Assumption to check: Poor search results
Validate with people who use this workflow before building.
Hypothesis 3
Real-time tracking with push notifications
Assumption to check: No order tracking
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
Ever wondered why you are always outbid at last minute at eBay? Here is why: People are using our eBay bid sniper app Baytomat! The great features: - Automatic bidding at eBay (bargain hunt) - Placing of your bids in the last seconds - Saving a lot of time and of over 20% of the auction price - Place always the last bid with our ebay sniper - Bids also while you are sleeping / on holiday / at work - App doesn't need to run while bidding - No more bidding wars using our eBay auction sniper - Multiple award winning bid sniper tool 10 FREE AUCTION POINTS - TRY IT NOW FOR FREE! After that you pay ONLY IF YOU WIN from 70 cents. More features: - Import your eBay watch list - Bidding groups (bid on multiple auctions until you win) - Placing bids while you are offline. - Find eBay bargains using spelling mistake search - Push- and Email notifications Test the mobile sniper Baytomat for a professional bidding method for all your eBay auctions. The auction points will never expire so you can use them whenever you want. We have more than 300.000 pleased customers worldwide making eBay bargains each day. You can reach us as well at https://www.baytomat.com
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
Stripe
Algolia
Supabase
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.
