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
Happy Spot
Happy Spot is a place for uplifting news and positive science, designed to help you on your search for greater health, harmony, and happiness.
$1.19 · In-app purchases
PRICE
$1.19
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included14 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 Happy Spot: map the core News 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 smart algorithm to curate personalized content based on user preferences.
Assumption to check: Users often feel overwhelmed by the number of articles and topics.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce offline reading capabilities for saved articles.
Assumption to check: Lack of offline access to articles.
Validate with people who use this workflow before building.
Hypothesis 3
Add a feature for discovering trending or popular topics.
Assumption to check: Difficulty in discovering new topics.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance user settings to allow for more personalization in feeds and notifications.
Assumption to check: Minimal customization options for 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
Happy Spot is a place for uplifting news and positive science, designed to help you on your search for greater health, harmony, and happiness. We want to spread real human-made optimism instead of negativity and AI slop. The online world is overflowing with AI-generated content, and most news feeds are filled with crises, wars, and scandals. Many people have had enough of the constant negativity and attention battles. At Happy Spot, we believe the world still offers plenty of good news and that it’s worth looking to the future with optimism. Research is advancing faster than ever, and progress is happening all around us. Happy Spot shines a light on those stories: positive breakthroughs, encouraging discoveries, and simple ways to live well. You’ll also find practical health tips, inspiring ideas, and mindful lifestyle habits to bring more joy and meaning to everyday life. We use AI for translations, and to support our research. But, every article is written and fact-checked by humans. Errors can happen, but when they do, they’re human too. Our in-depth articles, extensive research, and everyday inspiration, take time to create. It’s handcrafted, ad-free, and designed to bring genuine value. Our mission is to create more human content that makes the internet a little brighter, and our lives more motivated, and more optimistic.
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
React Native
Expo
Zustand
FastAPI
Axios
expo-notifications
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.
