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
Joy 101 - Curated by Hoda Kotb
Joy 101 helps build everyday joy, one moment at a time
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
1,695 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 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 Joy 101 - Curated by Hoda Kotb: map the core Health & Fitness 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 a more prominent category filter and suggestions.
Assumption to check: Users find it difficult to navigate through various content categories.
Validate with people who use this workflow before building.
Hypothesis 2
Add more engaging features like polls or challenges.
Assumption to check: Limited interaction features in the community section.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate user preferences for tailored content.
Assumption to check: Lack of personalization in content recommendations.
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
Joy 101 helps build everyday joy, one moment at a time. 5-minute practices for sleep, focus, and calm, guided by top experts you can trust. Try free for 30 days. WHAT YOU GET: * A personalized daily checklist tailored to your interests that builds lasting joy * 1–5 minute wellness practices that bring instant calm, energy, focus, or sleep * Experts you can trust, guiding journaling, breathwork, meditation, and movement sessions * Premium courses from leading experts who are usually impossible to book WHY JOY 101 IS DIFFERENT: * Thoughtfully curated by Hoda Kotb * Supports your whole self: mind, body, and spirit * Guided by trusted experts with real credentials * Adapts to you, every day * Fits into real life in just 5 minutes WHO IT'S FOR: Anyone balancing full lives and major transitions, seeking simple, effective ways to reconnect with joy. WHAT MEMBERS SAY: 4.9 rating from 1,000+ users "The first wellness app that's actually stuck." "I feel different after just 5 minutes." "These experts don't take clients, except here." MEMBERSHIP OPTIONS: Enjoy unlimited access to the full Joy 101 App with two flexible subscription options: * Monthly Plan: $16.99/month with a 2-week free trial * Annual Plan: $99.99/year with a one-month free trial Your subscription will automatically renew, and you can cancel anytime. Important Subscription & Auto-Renewal Information Payment will be charged to the credit card connected to your Apple Account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24-hours prior to the end of the current period, and the cost of the renewal will be identified. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. For full terms and privacy information, please visit: joy101.com/terms-of-service joy101.com/privacy-policy Connect with Joy 101 Instagram - https://www.instagram.com/joy101 Facebook - https://www.facebook.com/joy101 Questions or feedback? Reach out to us at [email protected]
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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
axios
@react-navigation/native
expo-image-picker
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.
