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
Little moments lead to big friendships
Free · In-app purchases
OVERALL US RANK
#7
Grossing · all categories
REVENUE (Est)
$3.2M/mo
$1.9M - $4.4M
RATING
★ 4.7
29,676,549 ratings · Top 15%
Evidence scope: #7 is the current overall US Grossing chart position. 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 included19 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 Instagram: 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.
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
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
< Scroll to see more >
App Store description
Little moments lead to big friendships. Share yours on Instagram. — From Meta Connect with friends, find other fans, and see what people around you are up to and into. Explore your interests and post what's going on, from your daily moments to life's highlights. Share what you’re up to and into: - Turn your life into a movie and discover short, entertaining videos on Instagram with Reels. - Keep up with friends on the fly with Stories and Notes that disappear after 24 hours. - Start group chats and share unfiltered moments with your Close Friends. - Share memories from recent events or trips in Feed. - Customize your posts with exclusive templates, music, stickers and filters. Dive into your interests. - Watch videos from your favorite creators and discover new content that’s personalized to your interests. - Get inspired by photos and videos from new accounts in Explore. - Discover brands and small businesses, and shop products that are relevant to your personal style. Some Instagram features may not be available in your country or region. Terms and Policies: https://help.instagram.com/581066165581870 Consumer Health Privacy Policy: https://privacycenter.instagram.com/policies/health Learn how we're working to help keep our communities safe across Meta technologies at the Instagram Safety Center: https://about.instagram.com/safety
Written user reviews are not shown here. Check current App Store reviews >
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
Implement a customizable feed algorithm that allows users to prioritize content.
Assumption to check: Users often find the algorithm for showing posts inconsistent.
Validate with people who use this workflow before building.
Hypothesis 2
Create a more intuitive privacy settings interface with clear explanations.
Assumption to check: Difficult to manage privacy settings.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize media loading and caching mechanisms.
Assumption to check: Performance issues with loading images and videos.
Validate with people who use this workflow before building.
Hypothesis 4
Offer more advanced editing tools for images and videos.
Assumption to check: Limited editing options for posts.
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
Firebase
Axios
Zustand
react-navigation
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.
