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
SSTP Connect
SSTP Connect is a VPN client that supports these protocols:
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
1,071 ratings · Top 5%
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 included17 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 SSTP Connect: map the core Utilities 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
Allow users to add custom servers.
Assumption to check: Limited server options can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 2
Implement better error handling and reconnection strategies.
Assumption to check: Connection issues can occur with certain networks.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate a feature to show connection history and data usage.
Assumption to check: Lack of detailed usage statistics.
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear explanations of features behind paywall and user benefits.
Assumption to check: In-app purchase options 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
SSTP Connect is a VPN client that supports these protocols: - SSTP (MS-SSTP) - SoftEther VPN This is only a VPN client. No VPN service is included. You need to specify the server you are connecting to. • Native Only iOS native libraries are used in the core function, including the TLS stack. No OpenSSL. Connections are saved natively so that you can start a connection from the system settings. • Simple VPN clients ought to be small and simple. No ads, analytics or other 3rd-party SDK are included. • Privacy No data is collected from you. Connection log only exists in the memory and is never saved to the device. • Complete Support all password and certificate-based authentications available in Windows 11. Support authenticating by password and certificate at the same time with TEAP (EAP chaining). Protocol details below. • Security Passwords and certificates are stored in the iOS keychain. SSTP Connect never saves them locally for convenience. • IPv6 Ready Support both IPv6 connections and stateless IPv6 configuration in the VPN tunnels. (DHCPv6 not supported) • More than TCP Support NAT traversal (NAT-T) and UDP acceleration just like the official SoftEther client. • Easy Import and Export Not only from SSTP Connect, reading connection settings from SoftEther Client Manager is also a piece of cake. • Routing Accept static routes pushed from the server or add your own entries. SSTP Authentication Methods - PEAP - EAP-TTLS - TEAP (EAP chaining) - EAP-TLS - EAP-MSCHAPv2 - MSCHAPv2 - CHAP - PAP SoftEther Authentication Methods - Password - RADIUS / NT Domain Password - Certificate - Anonymous Supported Server Platforms • Microsoft Windows Server 2008 and later • Microsoft Azure P2S VPN • MikroTik RouterOS* • SoftEther VPN Server • VPN Azure * Servers configured without certificates are not supported. SSTP Connect is a third-party implementation based on Microsoft Open Specifications and SoftEther VPN source code. We do not have any affiliation with either Microsoft Corporation or SoftEther Corporation.
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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.
