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
Secure VPN Proxy - Fast Server
secure vpn proxy-fast server is the fastest and most secure vpn on iphone, stay safe and completely private when visiting your favorite apps and websites!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
3,729 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.
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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Combine features and design from your favorite apps.
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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 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 Secure VPN Proxy - Fast Server: map the core Productivity 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 multiple backend server options and speed optimization features.
Assumption to check: Users often face connection issues and slow speeds.
Validate with people who use this workflow before building.
Hypothesis 2
Expand server locations and provide user suggestions based on proximity.
Assumption to check: Limited server locations available.
Validate with people who use this workflow before building.
Hypothesis 3
Redesign settings for clarity and user guidance.
Assumption to check: Confusing settings layout for new users.
Validate with people who use this workflow before building.
Hypothesis 4
Offer an ad-free premium subscription tier.
Assumption to check: Frequent ads interrupt user experience.
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
secure vpn proxy-fast server is the fastest and most secure vpn on iphone, stay safe and completely private when visiting your favorite apps and websites! military-grade encryption encrypts your connection and doesn't log any data that could be tied to you. fast vpn connection unlimited bandwidth, dedicated high-speed server. high-speed global servers our network of high-speed servers across 70+ countries puts you in control. access to content worldwide access to your favorite sites and apps worldwide and more at blazing- fast speeds. protect your privacy stay anonymous with military-grade encryption. subscription: $3.99/week with 3 days free trial, $8.99/month with 7 days free trial, $39.99/year with 7 days free trial. 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 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. any unused portion of a free trial period. if offered, will be forfeited when the user purchases a subscription to that publication, where applicate. privacy policy: https://policy.dramasgoast.xyz/privacy.html terms of service: https://policy.dramasgoast.xyz/terms.html
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 Async Storage
React Native Reanimated
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.
