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
Final VPN - Fast & Secure VPN
FinalVPN is the ultimate solution for secure, lightning-fast, and budget-friendly VPN services, meticulously designed to comply with AppStore application policies
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
1,924 ratings · Top 30%
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 included18 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 Final VPN - Fast & Secure VPN: map the core Utilities 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 reconnect feature that automatically tries to reconnect.
Assumption to check: Frequent connection drops
Validate with people who use this workflow before building.
Hypothesis 2
Expand the list of available servers for users.
Assumption to check: Limited server locations
Validate with people who use this workflow before building.
Hypothesis 3
Optimize server connections for faster internet speeds.
Assumption to check: Inconsistent speed
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the settings layout and provide tooltips for options.
Assumption to check: Confusing settings menu
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
FinalVPN is the ultimate solution for secure, lightning-fast, and budget-friendly VPN services, meticulously designed to comply with AppStore application policies. Whether you prioritize online privacy, gaming, or global content access, FinalVPN delivers. - Fast Servers: Enjoy lightning-fast internet speeds with our global server network, eliminating buffering and slowdowns. - Global Access: Access global content with ease, thanks to servers strategically placed around the world. - Top-Notch Security: Protect your data with advanced encryption protocols, whether you're on public Wi-Fi or at home. - Affordable Plans: Experience premium VPN services without the premium price. Test the waters with our free servers. Service Policy: FinalVPN uses VPN Service to ensure the secure transmission of your internet data, strictly adhering to the AppStore policies: - We never log your online activities or browsing history. - Your personal data is confidential and never shared. - Transparency in data handling is our commitment. Secure Data Transmission: FinalVPN's employs cutting-edge encryption methods to safeguard your data during transmission. This ensures that your sensitive information remains private and secure as it travels through our network of servers. Key Features: - User-Friendly: Connect with one tap for a hassle-free browsing experience. - No-Logs Policy: We never keep logs, preserving your privacy. - Unlimited Bandwidth: Stream, download, and browse without data limits. - 24/7 Support: Our support team is ready to help anytime you have questions or issues. Unlock the internet's full potential with FinalVPN, an app that prioritizes user privacy, complies with the AppStore policies, and guarantees the secure transmission of your data. Browse securely, access geo-restricted content, and enjoy the freedom you deserve. Download FinalVPN today and experience the difference. Please read our terms of use at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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
Zustand
React Navigation
Axios
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.
