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
Architectures
The app contains a selection of eye-catching architecture in Europe in pocket size
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 1.0
2 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Architectures: 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
Add user reviews and comments to enhance engagement.
Assumption to check: Limited user engagement features such as in-app messaging or community aspects.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a recommendation algorithm based on user preferences.
Assumption to check: Lack of personalized recommendations for landmarks.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize image loading and caching mechanisms.
Assumption to check: Poor performance with large image loads.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social sharing features to increase visibility.
Assumption to check: No social sharing options for users to share their favorite landmarks.
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 app contains a selection of eye-catching architecture in Europe in pocket size. The dynamic database comprises a large number of historical, innovative, significant and outstanding architecture and is constantly being supplemented. The architecture guide should facilitate the spontaneous exploration of Baukultur. A photo, the construction period and the name of the architect give a brief insight into the object. For the buildings and their architects there are a lot of objects more information. The radius in which the buildings are displayed as well as the period of time in which the object was created can be chosen. Based on the integrated map, it is possible to navigate to the destination on foot or by car. Navigation requires a connection to the Internet. For you the possibility to evaluate the building is available. In addition, you can provide photos of the buildings, which may be included in the app after an editorial review, with details of the photographer.
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
@react-navigation/native
@supabase/supabase-js
react-native-gesture-handler
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.
