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
VPN - FREE VPN Fast Ⓡ
Gyrfalcon VPN: Soar in the Digital Sky
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
24,536 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 included15 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 VPN - FREE VPN Fast Ⓡ: 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
Enhance connection stability with advanced server management.
Assumption to check: Frequent connection drops
Validate with people who use this workflow before building.
Hypothesis 2
Offer a wider range of server locations for better performance.
Assumption to check: Limited server locations
Validate with people who use this workflow before building.
Hypothesis 3
Optimize server selection algorithm for faster connections.
Assumption to check: Inconsistent speed
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the in-app purchase process with clearer benefits.
Assumption to check: Complicated premium upgrade process
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
Gyrfalcon VPN: Soar in the Digital Sky Just like the mighty gyrfalcon, the largest and most powerful of the falcons, Gyrfalcon VPN empowers you to navigate the online world with unmatched strength and agility. Security As vigilant and precise as a gyrfalcon, Gyrfalcon VPN shields your online activities with cutting-edge encryption. Keep your personal information safe and enjoy secure browsing. Fast and Reliable Connections Experience the speed and precision of a gyrfalcon in flight. Our optimized servers ensure swift, stable connections for a smooth and uninterrupted online experience. Join the Flight Download Gyrfalcon VPN today and soar through the digital skies. Your online experience is just a click away. Terms of Service: https://www.aitiming.net/about/v_term Privacy Policy: https://www.aitiming.net/about/v_privacy
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
Zustand
React Navigation
Axios
expo-location
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.
