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
Strong’s Concordance
For over 10 years, the Strong's Concordance app has been the trusted resource for Bible scholars and enthusiasts alike
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
333 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 included17 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 Strong’s Concordance: map the core Reference 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 advanced search options with filters for users.
Assumption to check: Limited search functionality and filters
Validate with people who use this workflow before building.
Hypothesis 2
Provide offline storage for saved verses.
Assumption to check: No offline access to saved verses
Validate with people who use this workflow before building.
Hypothesis 3
Simplify subscription management and offer clear explanations.
Assumption to check: Subscriptions can be confusing
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate social sharing features to engage users.
Assumption to check: Lack of community features
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
For over 10 years, the Strong's Concordance app has been the trusted resource for Bible scholars and enthusiasts alike. We're proud to announce the release of the next generation app which has been completely rewritten and updated to provide an even more seamless and intuitive user experience. --- Welcome to Strong's Concordance, the ultimate tool for anyone looking to dive deeper into the meaning of the Bible. Named after its creator James Strong, a renowned biblical scholar and theologian from the 19th century, the Strong's Concordance is an indispensable resource for understanding the original Hebrew and Greek words used in the Bible. This app brings the power of the Strong's Concordance to your fingertips, allowing you to quickly and easily search for any word in the Bible and access its original language definition, along with related verses and other useful information. Using the Strong's Concordance is simple - just select a word or phrase you're interested in, and the app will provide a list of all the verses in the Bible that contain that word, along with the corresponding original Hebrew or Greek word and its definition. This makes it easy to explore the deeper meanings and nuances of the Bible, and gain a deeper understanding of its teachings. Whether you're a scholar, student, or just someone who wants to explore the Bible more deeply, the Strong's Concordance app is the perfect companion for your spiritual journey. So download our app today and discover the wealth of knowledge and insight waiting for you in the pages of the King James Bible!
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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
react-navigation
axios
@react-native-async-storage/async-storage
react-native-reanimated
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.
