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
Epic Games
Connect with friends across the Epic Ecosystem, with secure sign-in wherever you play
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.1
965 ratings · Below Average
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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 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.
JavaScript is required to complete mailbox verification.
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 Epic Games: map the core Utilities workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Focus on improving user experience and functionality based on feedback.
Assumption to check: Low user rating (2.5/5) suggests dissatisfaction with functionality.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance account management with better subscription options and user settings.
Assumption to check: Limited account management features.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance and loading times.
Assumption to check: App performance issues reported by users.
Validate with people who use this workflow before building.
Hypothesis 4
Include offline access to game library and updates.
Assumption to check: Lack of offline functionality.
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
Connect with friends across the Epic Ecosystem, with secure sign-in wherever you play. The Epic Games app brings your conversations together with cross-platform text and voice chat, and includes Epic Authenticator for fast, secure login on any device. Note: You can't access the Epic Games Store using this app. Epic Parties and Voice Chat • Start a party and jump into voice with friends across Fortnite, the Epic Games Launcher, and mobile • Voice keeps running in the background when you minimize the app • Organize your group chats and start voice calls directly from the group Cross-Platform Text Chat • Send DMs across mobile, PC, and Fortnite • Create group chats with up to 16 members • Turn on notifications to get alerts for new messages • View your last 30 days of chat history across devices • Your conversations follow your Epic account everywhere you sign in Secure Sign-In with Epic Authenticator • Enable two-factor authentication (2FA) for secure login • Verify your identity quickly when you log into your Epic account on any device • Keep your Fortnite account, progress, and purchases safe • Use sign-in codes or one-tap verification to access your Epic account One Connected Epic Ecosystem Your Epic account links your games, devices, friends, and conversations into one social layer that moves with you. Start a party, chat with friends, plan your next match, and stay connected across mobile, PC, and Fortnite. Sign in to get started.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Axios
React Navigation
Shadcn UI
BUILD KIT DIFFICULTY
Expert
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.
