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
Muse by Mindhaus
A still place for wandering minds.
$17.99 · In-app purchases
PRICE
$17.99
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 included15 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 Muse by Mindhaus: map the core Productivity 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 customizable meditation sessions based on user preferences.
Assumption to check: Users often find meditation apps lack personalization.
Validate with people who use this workflow before building.
Hypothesis 2
Add a robust tracking system with reminders and alerts.
Assumption to check: Some users struggle with reminders and tracking progress.
Validate with people who use this workflow before building.
Hypothesis 3
Offer a wider range of meditation types and durations.
Assumption to check: Limited variety of sessions can bore users.
Validate with people who use this workflow before building.
Hypothesis 4
Provide a freemium model with valuable free content.
Assumption to check: Subscription costs can deter 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
A still place for wandering minds. Muse is a distraction-free creative studio designed for mentalists and magicians who think deeply, dream vividly and write in shadows. Inspired by retro interfaces and vintage technology, Muse offers a calm space to think, explore, and create. It includes four essential tools: - Notebook A minimalist space for capturing thoughts, routines, scripts and dreams. Tag entries with creative themes like Scripts, Shadows, Dreams, Secrets, and more. - Threads An idea generator that carries one million possible combinations, that's one million fresh ideas at your fingertips. It offers three evocative prompts per shuffle to unlock new stories, scripts and presentational ideas. - Blackout A script memoriser built like a game. Paste your writing, and Muse blacks out random sections, training your memory and intuition to fill in the blanks. You control how much is hidden. - Atmos Engine A cinematic soundboard with textures and drones, from a soothing Rain in Tokyo to the eerie hush of The Backrooms. Mix ambient loops to build your own endless soundscapes for writing, rehearsal, or deep focus. Audio continues to play even in the background. When you tap into Muse, the rest of the world fades away. Built for the night. Designed for the mind.
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
Zustand
React Navigation
react-native-reanimated
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.
