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
HitVPN
HitVPN is a next-generation VPN client that ensures your privacy and protects your data while you work online.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.3
509 ratings · Below Average
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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for HitVPN: 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
Expand server options and provide performance comparisons
Assumption to check: Limited server selection compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement better error handling and connection retry logic
Assumption to check: Connection issues reported by users
Validate with people who use this workflow before building.
Hypothesis 3
Provide clearer explanations and benefits of each subscription tier
Assumption to check: Subscription model may be unclear
Validate with people who use this workflow before building.
Hypothesis 4
Simplify navigation and improve onboarding experience
Assumption to check: User interface can be confusing
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
HitVPN is a next-generation VPN client that ensures your privacy and protects your data while you work online. With HitVPN app you can use the Internet safely and anonymously. No personal data involved. FAST VPN CLIENT Visit your favourite sites and use any application with HitVPN without speed reduction. MULTI-PROTOCOL Support for WireGuard and VLESS VPN protocols provides maximum flexibility and connection stability. SAFETY VPN protocols with enhanced data protection and privacy. Protects your privacy on public Wi-Fi spots. Strict no logs policy. EASE OF USE The app's functionality is simple and accessible. Just a couple of clicks and you are completely safe on the Internet. APP FEATURES Simple “one tap” setup. Protocol with end-to-end encryption. Does not collect personal data. HOW IT WORKS To configure the HitVPN app, you need a VLESS link or a WireGuard configuration file from any VPN provider, converted into the HitVPN link format. To convert a WireGuard file, use the website https://hitvpn.to/converter or the public script https://github.com/hvpdev/hvpnlink. 24/7 CUSTOMER SERVICE Our team is always here to support you. Ask us a question to our Support Team and you will quickly receive expert assistance on setting up and running the application. Link to Support contact page: https://hitvpn.to/contacts. Support Chat: https://t.me/hitvpnhelp READ THE TERMS OF USE AND PRIVACY POLICY Privacy Policy of the mobile application: https://hitvpn.to/privacy Terms of use: https://hitvpn.to/rules LICENSES USED This app uses Wireguard code by Jason A. Donenfeld, released under Apache License v.2.0 This app uses Xray-core code by Project-X, released under Mozilla Public License Version 2.0
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.
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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.
