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
Guardian VPN — Secure
Browse Freely, Stay Secure – Guardian VPN — Secure
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
999 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
Make this idea yours
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 Guardian VPN — Secure: 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
Optimize server connections and improve latency.
Assumption to check: Users report slow connection speeds.
Validate with people who use this workflow before building.
Hypothesis 2
Add more server options for better global coverage.
Assumption to check: Limited server locations.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance connection stability and provide better error handling.
Assumption to check: Frequent disconnections.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify subscription options and improve clarity.
Assumption to check: Confusing subscription model.
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
Browse Freely, Stay Secure – Guardian VPN — Secure Experience a safer, faster, and more private internet with Guardian VPN — Secure, your trusted companion for digital protection and freedom. Whether you’re working, streaming, or just browsing, Guardian VPN keeps your connection safe wherever you go. Why choose Guardian VPN — Secure? Advanced Data Protection. Powerful encryption safeguards your online activity and hides your IP address from prying eyes. Safe on Public Wi-Fi. Stay protected in cafés, airports, hotels, and any other public network with one tap. Optimized Performance. Enjoy fast, stable connections for streaming, video calls, gaming, and online work. Built-in Speed Test. Check your connection speed instantly to choose the best server for your needs. Clear Usage Insights. Monitor your session duration, data usage, and server performance — all in one place. Smart Features, Simple Control. Turn on auto-connect, block ads, and customize your DNS or protocols through an intuitive interface. Please note: some features may be available through a subscription. With Guardian VPN — Secure, your privacy and performance are always under your control. One tap to connect. Total peace of mind. Download today and make your online experience safer, faster, and smarter. Privacy Policy: https://guardian-soft.com/privacy-policy-2/ EULA: https://guardian-soft.com/eula/ TOS: https://guardian-soft.com/terms-of-use/
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 Vector Icons
React Native Community NetInfo
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.
