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
RealWorld Radiology
* Now compatible with iOS 8 *
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.3
3 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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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/
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 RealWorld Radiology: map the core Medical 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
Expand database with user-generated content and contributions.
Assumption to check: Limited content variety in cases and resources
Validate with people who use this workflow before building.
Hypothesis 2
Implement a cleaner design with better organization.
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Add quizzes and interactive learning paths.
Assumption to check: Lack of interactive features for learning
Validate with people who use this workflow before building.
Hypothesis 4
Improve visibility and explanation of subscription benefits.
Assumption to check: Subscription model is not clearly communicated
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
* Now compatible with iOS 8 * RealWorld Radiology is your ultimate guide to the basics of thoracic imaging. Learn to read chest X-rays in no time and discover the most frequent diagnoses through multiple fully annotated examples. RealWorld Radiology currently features more than 70 real-world cases (with more coming for free every month!) each containing: - High-resolution X-rays - All appropriate series (posterioranterior, lateral, expiratory, etc.) - Clinical information regarding the patient and mode of presentation - Detailed radiologic interpretation - Drawings of every radiological finding right on the X-ray Our cases have been especially selected for their high pedagogical value and real-world representativeness. They can be classified either by diagnosis (e.g. pneumonia, atelectasis, pulmonary fibrosis) or by actual radiological finding (e.g. alveolar opacities, interstitial opacities, silhouette sign), making the learning of the differential diagnosis easier than ever while keeping each case easy to find for quick access. Test your knowledge with the Quiz mode and check if what you see matches the radiologist's findings. All in all, RealWorld Radiology is your ideal reference for example-based learning or quick on-the-spot study while waiting for your attending.
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
Axios
React Native Reanimated
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.
