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
Sunday Lectionary
This App is based upon the 1979 Book of Common Prayer (BCP - Episcopal Church) and the Revised Common Lectionary (RCL)
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.9
28 ratings · Top 50%
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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Sunday Lectionary: 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
Offer various reading formats and themes.
Assumption to check: Limited reading formats and options for customization.
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced search and filtering options.
Assumption to check: Difficulty in finding specific readings.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to add multiple notes and categorize them.
Assumption to check: No option to save multiple notes for a reading.
Validate with people who use this workflow before building.
Hypothesis 4
Utilize contemporary design trends to enhance UI.
Assumption to check: Basic user interface lacks modern design elements.
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
This App is based upon the 1979 Book of Common Prayer (BCP - Episcopal Church) and the Revised Common Lectionary (RCL). The purpose of the App is to provide the complete Year A, B, and C Sunday Lectionary scriptures that are normally only listed by their passages. In the past, the reader would look up the passages in the Book of Common Prayer for the applicable Year and date. Next they would individually open their Bible to the passage to obtain the reading. By having the readings in the app database saves the reader from having to look these scriptures up. The database and supporting algorithms also provide a perpetual yearly calendar for all Sunday readings (forever). To select the Revised Common Lectionary (RCL), click the settings button in the bottom tab bar, then select RCL in the top right corner of the Settings display then click Save. You will need to close and reopen to app after changing the Lectionary setting. I hope you and your family enjoy this App as much as I have enjoyed creating it and using it for my own family.
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
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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.
