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: Reels Video Editor
Create awesome reels, stories, collages, and carousel videos using trendy templates in Muse - easy to use and ready in minutes.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
4,286 ratings · Top 15%
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.
Build your own version
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 included18 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: Reels Video Editor: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Create awesome reels, stories, collages, and carousel videos using trendy templates in Muse - easy to use and ready in minutes. How to use. Choose a template → Add your photos and videos → Share your masterpiece. Key Features. Numerous Templates: a wide selection of adaptable templates for any occasion, including trending collages and Cut Out formats. Carousels: create eye-catching panoramic carousel posts designed to stand out on Instagram. Reels Maker: quickly find the perfect template for your video in just a few taps. Creating Videos from Scratch: full creative freedom with no limits on your ideas. Voice Over & Captions: add voice and subtitles to create viral-ready videos. Memories Exploring: capture heartfelt moments and vibrant memories through soulful videos. Categories. Memories, Stories, Lifestyle, Travel, Beauty, Love, Sport, Motivation, Inspiration, Mood, Marketing, Business, Seasonal, Holidays, Hygge, Food, Style. AI Tool. Auto Beat Sync: match your clips to the music. Created for You Videos: context-specific videos from the media in your gallery. Trendy Content. Popular Sounds: craft trendy videos & boost your social media. Filters, Effects, Relight: create a current aesthetic. Stickers, Text, Graphics: make your videos more unique and stylish. Weekly Updates, Content for Events: up-to-date content for festive events, seasons, discounts and more. Video Editing Tools. Speed Adjustment, Volume Control: highlight essential aspects of the events. Video Effects, Text and Graphic Animation: bring a dynamic touch to your video. Placeholders, Collages, Layouts: combine media in cool arrangements. Subscription Info. With a Muse Premium Subscription, you will access all premium features. Disclaimer. Muse is not affiliated, associated, sponsored, endorsed by, or in any way officially connected with YouTube, Instagram, TikTok, Facebook, Twitter. We would be thrilled to receive your suggestions for future features of the app or any feedback you may have! Please email us at [email protected] Privacy Policy: https://bigrowth.io/privacy.pdf Terms of Use: https://bigrowth.io/terms.pdf
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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
Allow users to fully customize templates with advanced editing tools.
Assumption to check: Limited customization options for templates
Validate with people who use this workflow before building.
Hypothesis 2
Implement a premium subscription model to remove ads.
Assumption to check: Frequent ads disrupting user experience
Validate with people who use this workflow before building.
Hypothesis 3
Provide various resolutions and formats for video exports.
Assumption to check: Limited export options for videos
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a feature for users to submit and vote on new template designs.
Assumption to check: Templates may not be updated regularly
Validate with people who use this workflow before building.
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
Zustand
@react-navigation/native
expo-av
BUILD KIT DIFFICULTY
Advanced
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.
