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
Morning Light / Night Light
Hazelden Publishing’s Morning Light / Night Light app combines two popular meditation books into one app for double the support for people in recovery from addiction.
$14.99 · In-app purchases
PRICE
$14.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.9
360 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 Morning Light / Night Light: map the core Books 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 user-generated content or community stories.
Assumption to check: Limited content variety compared to other similar apps
Validate with people who use this workflow before building.
Hypothesis 2
Introduce a freemium model with some free content.
Assumption to check: High subscription price may deter users
Validate with people who use this workflow before building.
Hypothesis 3
Add features for users to customize their experience.
Assumption to check: Lack of personalization options
Validate with people who use this workflow before building.
Hypothesis 4
Enhance onboarding and improve navigation cues.
Assumption to check: Navigation can be confusing for new users
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
Hazelden Publishing’s Morning Light / Night Light app combines two popular meditation books into one app for double the support for people in recovery from addiction. Each day you will find two inspirational readings: one to start your day on a bright and positive note, and one to help calm and center you at the end of your day. A total of 732 readings (2 for each day of the year) are included. No subscriptions or in-app purchases are required. Each reading focuses on a specific topic and ends with a simple prayer or affirmation. Topics include: self-esteem, relationships, independence, fear, health, making mistakes, gratitude, and many others. Author Amy E. Dean gently reminds us of all the tools we have access to: the Twelve Steps, sponsors, slogans, our Higher Power, prayer, and meditation. Also included are handy reference lists of the Twelve Steps and the Twelve Traditions of AA. When the app is opened each day, it will automatically show you that day’s reading. Choose a time for a daily notification reminding you to read, reflect, and meditate on that day’s reading and on your recovery. Open the app anytime you need to refocus on your sobriety. About the Author Amy E. Dean is the best-selling author of several meditation books, and is an in-demand speaker on recovery topics and self-esteem. Features: PRESS the “Today” button to access today’s reading. SWIPE forward or back to easily access more daily readings. SWITCH between morning and night meditations, favorites, and search results using the sun/moon icon. SHARE the daily reading with friends by e-mail or text. BOOKMARK your favorite meditations (press the star in the upper right-hand corner) and easily return to them (press the star in the bottom toolbar). SEARCH for relevant keywords in both morning and night meditations. RECEIVE a notification every day to remind you to read today’s messages. JUMP to a specific reading using the calendar button. SET your font size using your device settings. CHOOSE between light or dark mode.
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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
Supabase
Redux
React Navigation
Axios
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.
