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
Murray Mood Sampler
Murray Mood Sampler helps you capture how you feel in real time.
$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 Murray Mood Sampler: 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 and notifications to encourage daily logging
Assumption to check: Users often find it hard to stay consistent with mood logging
Validate with people who use this workflow before building.
Hypothesis 2
Provide a curated list of articles and resources for better engagement
Assumption to check: Limited resources or information related to mood tracking
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the mood logging process with guided steps
Assumption to check: Users may feel overwhelmed by too many options
Validate with people who use this workflow before building.
Hypothesis 4
Add a community section for users to connect and share their mood journeys
Assumption to check: Lack of social features for sharing experiences
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
Murray Mood Sampler helps you capture how you feel in real time. Twice per day, you’ll receive a simple prompt: • How are you (0–10)? • What’s mostly on your mind? • What are you doing? That’s it. Over time, you’ll build a record of your emotional patterns — when your mood rises, when it dips, and what surrounds those moments. Why random prompts? Because memory is unreliable. Mood Sampler samples your experience as it actually unfolds. Features: • Two random daily notifications • Clean, distraction-free entry screen • View full history of entries • Export your data as a spreadsheet (.csv) • All data stored locally on your device Mood Sampler is a personal tool for self-understanding. Your data belongs to you and can be shared with anyone you choose. No accounts. No tracking. No subscriptions.
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
axios
chart.js
react-navigation
formik
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.
