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
ARSpiders.com Spider on Face
No Ads! Everything Included for Free (No In-App Purchases!)
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
472 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.
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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 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/
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 ARSpiders.com Spider on Face: map the core Entertainment 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
Offer a wider variety of spider designs and animations.
Assumption to check: Limited spider options for users
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the paywall and make premium options clearer.
Assumption to check: In-app purchase process can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Improve AR stability and accuracy.
Assumption to check: Occasional AR tracking issues
Validate with people who use this workflow before building.
Hypothesis 4
Add options for users to share their creations easily.
Assumption to check: No social sharing features
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
No Ads! Everything Included for Free (No In-App Purchases!) Are your friends terrified of creepy spiders or scorpions? Or are you brave enough to face your fears? Surprise and scare your friends with the ultimate spider prank camera — right on their faces or around your room using realistic AR creatures. Key Features: 1. Place Spiders & Co via AR (Augmented Reality): Watch ultra-realistic 3D creatures crawl across walls, floors, tables — even your face. 2. Interactive Gameplay: Command your creepy-crawlies and make them “attack” for maximum shock value. 3. Capture and Share: Record spine-chilling photos and videos to prank your friends. 4. Camera FX: Enhance realism with cinematic filters like Color Correction, Vignette, and Film Grain. Advantages: • No Ads or In-App Purchases: Everything is unlocked and ready — 100% free experience. • Offline Mode: Works seamlessly even without an internet connection. • Spider Selfie Mode: Create ultra-realistic spider selfies. (Requires iOS TrueDepth camera or iOS 15 + A12 or newer.) Attention: This app can be scary — perfect for pranking friends or testing your courage. It may even help you overcome arachnophobia. More creatures are coming soon — vote and share your feedback.
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
react-native-arkit
expo-camera
@react-navigation/native
react-native-share
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.
