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
Jar of Joy: Gratitude Jar
Capture your thoughts, feelings, and dreams in one beautiful space.
$2.99 · In-app purchases
PRICE
$2.99
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's included16 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 Jar of Joy: Gratitude Jar: map the core Lifestyle 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
Incorporate reminders to encourage daily entries.
Assumption to check: Users often forget to enter daily gratitude.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a search/filter feature for past entries.
Assumption to check: Difficulty in accessing older entries.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to personalize jar names and themes.
Assumption to check: Limited customization options for jars.
Validate with people who use this workflow before building.
Hypothesis 4
Enable sharing of entries on social media platforms.
Assumption to check: Lack of social sharing 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
Capture your thoughts, feelings, and dreams in one beautiful space. Jar of Joy is a calming journaling app where you can write daily letters and store them in different jars like Gratitude, Manifestation, Affirmations, Self Love, and more. Each note becomes a small memory you can revisit anytime. Turn everyday moments into something meaningful. Write what you’re grateful for, manifest your goals, express your emotions, or celebrate your wins — all organized in simple, beautiful jars. What you can do: • Write daily gratitude letters • Add affirmations and positive thoughts • Manifest your goals and dream life • Express emotions in a safe space • Save self love notes and reminders • Track wins and happy moments • Revisit your past entries anytime Why you’ll love it: • Simple, clean and calming design • Different jars for different moods • Helps build a positive daily habit • Encourages mindfulness and reflection • Private and personal experience Privacy policy: https://digitalhole.github.io/JarofJoy.html Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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
Supabase
react-navigation
formik
@expo/vector-icons
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.
