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
NephiCalm: Scripture Stories
Turn to the Book of Mormon before bedtime and unwind with our narrated Scripture stories
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.9
356 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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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 NephiCalm: Scripture Stories: 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
Expand the library of stories with user-generated content.
Assumption to check: Limited content variety compared to other scripture apps
Validate with people who use this workflow before building.
Hypothesis 2
Create a cohesive design language throughout the app.
Assumption to check: Inconsistent user interface design elements
Validate with people who use this workflow before building.
Hypothesis 3
Implement advanced filters and sorting options for better user experience.
Assumption to check: Limited search functionality
Validate with people who use this workflow before building.
Hypothesis 4
Add user interaction features like comments or ratings for stories.
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
Turn to the Book of Mormon before bedtime and unwind with our narrated Scripture stories. Play short stories in the NephiCalm app to find inner peace and help you reflect on His word. Add soothing background sounds for a truly immersive experience. Let the word of God guide you as you relax, find comfort, and strengthen your faith. Designed specially for members of The Church of Jesus Christ of Latter-day Saints. - 15+ uplifting stories from the Book of Mormon - Short 7-min audio tales to inspire and uplift - Sorted by themes: faith, love, reflection, peace & more - Separate library of bedtime stories for kids - High-quality audio narration - Minimized mode to listen anywhere - Light & dark mode available A peaceful bedtime routine Take a moment to reflect and connect with God before you sleep. Whether you're seeking comfort, hope, or inspiration, listening to Scripture stories can be the perfect way to end your day in gratitude. Strengthen your faith anytime Feeling overwhelmed? Looking for guidance? The NephiCalm library offers stories for any moment of reflection. Scripture stories hold the power to calm anxiety and uplift LDS members looking for reassurance and motivation. Short stories for children NephiCalm features a dedicated section for kids, helping young hearts understand gospel teachings through engaging and simple storytelling. Strengthen their faith early with narrated lessons from the Book of Mormon. Immersive background sounds Enhance your listening experience with soothing background audio. Choose from gentle piano or ocean waves to vintage vinyl or soft ambient tones. Create a unique ASMR experience with 5 sounds that bring Scripture stories to life. PAYMENT AND SUBSCRIPTION OPTIONS Choose between the below to access the best NephiCalm features: • Monthly Subscription • Annual Subscription You may cancel your subscription at any time. To do so, visit your Apple account to manage your subscription and turn auto-renewal off. Support: [email protected] Terms of Use: https://nephicalm.app/terms-of-use Privacy Policy: https://nephicalm.app/privacy-policy
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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
Zustand
Supabase
React Navigation
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.
