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
Pin the World 2
Finally available, with lots of new features!
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 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/
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 Pin the World 2: map the core Travel 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 offline caching for pins and map data.
Assumption to check: Limited offline functionality for users without data access.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce a recommendation system based on user preferences.
Assumption to check: Difficulty in discovering new places without recommendations.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize map loading and pin rendering for better performance.
Assumption to check: User experience can be hindered by map loading times.
Validate with people who use this workflow before building.
Hypothesis 4
Add social sharing options to connect with friends and share travel experiences.
Assumption to check: Limited social features for sharing pins and experiences.
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
Finally available, with lots of new features! PIN THE WORLD 2 The app has been completely rewritten to meet your needs! In addition to all the functions that were available in the first version, you can now enjoy the following improvements: - New graphics for viewing and adding the pins. - Attach photos, text, internet links and audio recordings to a pin. It is possible to enter an unlimited number of attachments. - When sending a pin you can choose to send the entire category. The recipient will receive the pins all together in one package. - Ability to freely manage your own backup using Google Drive, Dropbox, iCloud Drive or any other service. It is also possible to send the backup by email. - Improved ease of category management. It is now easier to add, edit and delete them. - Ability to lock the app with a password, to prevent any changes to the pins. Useful in case of use in business. - Improved pin search, with the possibility of ordering them using a drop down menu. Saves the order last used. - You can now view the app horizontally on the iPhone. ...and many other minor improvements! All pins stored on the first version will be exported to the new format automatically.
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
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@react-native-community/geolocation
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BUILD KIT DIFFICULTY
Starter
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.
