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
Snapchat
Snapchat is a fast and fun way to share the moment with your friends and family
Free · In-app purchases
OVERALL US RANK
#4
Grossing · all categories
REVENUE (Est)
$5.1M/mo
$3.0M - $7.1M
RATING
★ 4.5
5,939,881 ratings · Top 15%
Evidence scope: #4 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
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A product spec, screen plans, and build steps for your coding agent.
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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.
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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 Snapchat: 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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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 more intuitive way to view and manage sent messages.
Assumption to check: Users find it difficult to manage disappearing messages.
Validate with people who use this workflow before building.
Hypothesis 2
Provide extensive editing tools before sending media.
Assumption to check: Limited editing options for photos/videos.
Validate with people who use this workflow before building.
Hypothesis 3
Create a clearer navigation for viewing and interacting with stories.
Assumption to check: Story viewing can be confusing and unintuitive.
Validate with people who use this workflow before building.
Hypothesis 4
Implement stronger privacy settings and transparency about data usage.
Assumption to check: User privacy concerns regarding data retention.
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
Snapchat is a fast and fun way to share the moment with your friends and family SNAP • Snapchat opens right to the Camera — just tap to take a photo, or press and hold for video. • Express yourself with Lenses, Filters, Bitmoji and more! • Try out new Lenses daily created by the Snapchat community! CHAT • Stay in touch with friends through live messaging, or share your day with Group Stories. • Video Chat with up to 16 friends at once — you can even use Lenses and Filters when chatting! • Express yourself with Friendmojis — exclusive Bitmoji made just for you and a friend. STORIES • Watch friends' Stories to see their day unfold. • See Stories from the Snapchat community that are based on your interests. • Discover breaking news and exclusive Original Shows. SPOTLIGHT • Spotlight showcases the best of Snapchat! • Submit your own Snaps or sit back, relax, and watch. • Pick your favorites and share them with friends. MAP • Share your location with your best friends or go off the grid with Ghost Mode. • See what your friends are up to on your most personal map when they share their location with you. • Explore live Stories from the community nearby or across the world! MEMORIES • Save unlimited photos and videos of all your favorite moments. • Edit and send old moments to friends or save them to your Camera Roll. • Create Stories from your favorite Memories to share with friends and family. FRIENDSHIP PROFILE • Every friendship has its own special profile to see the moments you’ve saved together. • Discover new things you have in common with Charms — see how long you’ve been friends, your astrological compatibility, your Bitmoji fashion sense, and more! • Friendship Profiles are just between you and a friend, so you can bond over what makes your friendship special. Happy Snapping! • • • Please note: Snapchatters can always capture or save your messages by taking a screenshot, using a camera, or otherwise. Be mindful of what you Snap! For a full description of our privacy practices, please see our Privacy Center.
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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
React Navigation
expo-camera
Zustand
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.
