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
Argon VPN - Super Easy Connect
Argon VPN distinguishes itself from other VPN apps with its unique and user-friendly UI design
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
256 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's included16 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 Argon VPN - Super Easy Connect: map the core Reference 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 range of server locations to attract users.
Assumption to check: Limited server options compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Improve connection stability and reliability.
Assumption to check: Frequent disconnections reported.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify subscription tiers and provide clearer explanations.
Assumption to check: Confusing subscription options.
Validate with people who use this workflow before building.
Hypothesis 4
Implement features that allow users to customize their VPN usage.
Assumption to check: Lack of support for advanced features like split tunneling.
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
Argon VPN distinguishes itself from other VPN apps with its unique and user-friendly UI design. Navigate with ease and experience a seamless VPN connection process while reveling in Argon VPN’s fun interface. Additionally, Argon VPN is a reliable and user-friendly virtual private network (VPN) service designed to ensure your online privacy and security. With Argon VPN, you can browse the internet securely by encrypting your connection, protecting your sensitive data from potential threats. Enjoy a fast online experience with one-click connection and optimized performance. Safeguard your digital privacy and stay safe online with Argon VPN. Argon VPN offers a diverse range of servers across multiple countries, Enjoy fast and secure Internet with Argon VPN, where you can connect to proxy servers worldwide. Experience the freedom to explore the internet privately. Download the app now to enjoy a distinctive VPN experience that combines functionality with a touch of entertainment. Connect securely and have a delightful time with Argon VPN's innovative design. Additional Subscription Information Subscription Information - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase - No cancellation of the current subscription is allowed during active subscription period Privacy Policy: https://argonvpn.com/privacy Terms of Service: https://argonvpn.com/terms
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
Axios
React Navigation
React Native Reanimated
Async Storage
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.
