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
Spider Proxy - HTTP(S) Catcher
Spider Proxy is a powerful mobile HTTP/HTTPS network debugging and packet capture tool for iOS
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.8
10 ratings · Top 50%
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's included17 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 Spider Proxy - HTTP(S) Catcher: map the core Developer Tools 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 advanced filtering and sorting capabilities.
Assumption to check: Limited filtering options for captured traffic
Validate with people who use this workflow before building.
Hypothesis 2
Create an onboarding flow to guide new users.
Assumption to check: Lack of user tutorials or onboarding
Validate with people who use this workflow before building.
Hypothesis 3
Optimize performance for handling large amounts of data.
Assumption to check: Occasional crashes during heavy traffic capture
Validate with people who use this workflow before building.
Hypothesis 4
Add functionality to export logs in multiple formats.
Assumption to check: No ability to export captured data
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
Spider Proxy is a powerful mobile HTTP/HTTPS network debugging and packet capture tool for iOS. Inspect, analyze, and modify HTTP/HTTPS requests and responses directly on your iPhone or iPad without connecting to a computer. It supports request export and customizable debugging, including URL redirection and custom headers—making it an essential tool for developers and testers. Upgrade to Spider Proxy VIP to unlock seamless multi-device collaboration! Manage up to 4 secondary devices simultaneously with one-click data sync and sharing. VIP also offers flexible authorization management, allowing you to set custom rules or revoke access at any time. How It Works Spider Proxy creates a secure local VPN configuration on your device. When packet capture is enabled, a local HTTP proxy runs within the VPN process, routing local network traffic through the proxy to intercept, parse, and debug HTTP/HTTPS requests and responses. Key Features HTTPS Traffic Analysis: Deep inspection and viewing of encrypted traffic. Formatted Previews: Built-in syntax highlighting and formatting for HTML, JSON, and CSS. Real-time Rule Rewrites: Modify HTTP(S) requests and responses on the fly. Multi-device Collaboration: Multi-device authorization and effortless data sync. Secure Authorization: Encrypted authorization rules with instant access revocation. Backup & Restore: Easily back up and restore your local configuration. JS Scripting: Extend interface capabilities using custom JavaScript scripts. Request Replay: Custom HTTP(S) replaying with dependency handling and assertion checks. Developer Toolbox: Encoding & Encryption: Base64, URL Encode/Decode, MD5, SHA256, AES128, DES/3DES, RC4, Rabbit, UTF-8 conversion, ASCII tools. Utilities: Timestamp converter, Password generator, UUID generator, Color picker, Number to Chinese, JSON formatting & comparison. Terms of Use Spider Proxy is designed exclusively for network development, app debugging, and educational research. Please strictly adhere to all applicable local laws and regulations.
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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
Axios
Zustand
React Navigation
Styled Components
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.
