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.
Windscribe VPN is a privacy-focused VPN app for iPhone, iPad, Mac and Apple TV, built by Windscribe Limited, an independently owned company founded in 2016 and based in Toronto, Canada
Free · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for VPN Windscribe: Fast & 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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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
Assumption to check: Limited free data allowance compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Connection speeds can be inconsistent.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited server locations for free users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User interface can be confusing for new users.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Windscribe VPN is a privacy-focused VPN app for iPhone, iPad, Mac and Apple TV, built by Windscribe Limited, an independently owned company founded in 2016 and based in Toronto, Canada. Windscribe encrypts your traffic, replaces your IP address with one from 69+ countries, and unblocks sites and streaming libraries restricted in your region. WHO WINDSCRIBE IS FOR • Travellers who need a home-country IP abroad, or a US IP from anywhere. • Anyone using public Wi-Fi in airports, hotels or cafes. • Streamers who want Netflix, Disney+, Amazon Prime Video, Hulu, HBO Max, Peacock, Paramount+, ESPN+, Sling TV, BBC iPlayer, DAZN and FuboTV from other countries. • Students and staff on restrictive networks, where Stealth and Wstunnel work when standard VPN traffic is blocked. • People who want a free VPN with no credit card, no ads and no email required to sign up. FREE VS PRO Starter (free): 10 GB of data per month and servers in 10 countries (US, Canada, UK, France, Germany, Netherlands, Switzerland, Norway, Romania and Hong Kong), with AES-256 encryption, kill switch and the full ad and tracker blocker. No credit card. No ads. No email required. P2P and port forwarding are not included. Pro (paid): unlimited data, 69+ countries, P2P file sharing without throttling, and port forwarding for game servers and remote device access. TECHNICAL SPECIFICATIONS • Protocols: WireGuard, OpenVPN UDP, OpenVPN TCP, IKEv2, Stealth, Wstunnel. • Encryption: AES-256 with Perfect Forward Secrecy. Post-quantum encryption on WireGuard protects today's traffic from future decryption. • 10 Gbps server ports for 4K streaming, large downloads and low-latency gaming. • DNS leak protection and an always-on kill switch that cuts all traffic if the tunnel drops. • R.O.B.E.R.T.: a configurable DNS-level blocker for ads, trackers, malware and phishing domains. • Speed: TechRadar's April 2026 tests ranked Windscribe the fastest free VPN (1,594 Mbps on WireGuard) and third fastest paid VPN overall (2,263 Mbps). WHAT WINDSCRIBE STORES Windscribe does not log your IP address, browsing history, DNS queries, connection timestamps or traffic. It stores three non-identifying data points: date last used, bandwidth used in the last 30 days, and activated app versions. INDEPENDENT VERIFICATION • Court-tested: on 11 April 2025 a court in Athens, Greece dismissed criminal charges against Windscribe co-founder Yegor Sak. Windscribe had no user data to hand over; the no-logs policy held as a legal defence. • Infrastructure audit: PacketLabs audited the server stack in June 2024, covering 20 repositories and roughly 80,000 lines of code, plus pen testing. • Open source: the full iOS app source code is published at github.com/Windscribe/iOS-App. • Transparency report: every DMCA and law enforcement request is published in real time. • PCMag Editors' Choice, rated 4.5 out of 5, August 2025. SERVER LOCATIONS (PRO) Albania, Argentina, Australia, Austria, Belgium, Bosnia, Brazil, Bulgaria, Canada, Chile, Colombia, Croatia, Cyprus, Czech Republic, Denmark, Ecuador, El Salvador, Estonia, Finland, France, Georgia, Germany, Greece, Guatemala, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, Japan, Kenya, Latvia, Lithuania, Luxembourg, Malaysia, Mexico, Moldova, Netherlands, New Zealand, Nigeria, North Macedonia, Norway, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Romania, Russia, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sweden, Switzerland, Taiwan, Thailand, Turkey, UAE, UK, Ukraine, United States, Uruguay, Vietnam. ONE ACCOUNT, EVERY DEVICE One account covers iPhone, iPad, Mac and Apple TV, plus Windows, Linux, Android TV & phones, and browsers. Connect free in under a minute, or go Pro for unlimited data. WireGuard is a registered trademark of Jason A. Donenfeld.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.