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
GoFTP Server
GoFTP Server lets you seamlessly share files between your mobile device and your other devices
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
65 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included16 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.
JavaScript is required to complete mailbox verification.
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 GoFTP Server: map the core Utilities workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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 user editing capabilities with more permissions options
Assumption to check: Limited user management features
Validate with people who use this workflow before building.
Hypothesis 2
Implement real-time server status updates and notifications
Assumption to check: No real-time updates
Validate with people who use this workflow before building.
Hypothesis 3
Provide users with clearer error messages for connection issues
Assumption to check: Lack of detailed error messages
Validate with people who use this workflow before building.
Hypothesis 4
Simplify settings navigation and provide tooltips for options
Assumption to check: Difficult to navigate settings
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
GoFTP Server lets you seamlessly share files between your mobile device and your other devices. FTP is a standard network protocol supported by various applications available on almost any device with a network connection. With GoFTP Server, you can easily transfer photos, videos, documents, and any other files between your iPhone, iPad, Mac, PC, Windows, Linux, or any device with an FTP client. Enjoy fast file transfers over Wi-Fi, no cables required. • Effortlessly move photos and videos from your iPhone to any Windows, Linux, or Mac computer - no cloud services needed. • Connect to the app on your iPhone using the built-in FTP clients available on most operating systems - usually no additional software is required on your computer. • Enjoy smooth two-way file transfers: send files from your iPhone to your computer or bring files back onto your device. • Take advantage of the universal FTP standard to share files even with older computers and legacy devices. • Transfer everything over Wi-Fi and enjoy complete freedom - no cables, no adapters, no hassle. • Turn your iPhone into a mini wireless drive accessible from any device on your network. • Share files privately within your own Wi-Fi network - with no third-party servers and no internet connection required.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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/native
react-native-async-storage
expo-status-bar
BUILD KIT DIFFICULTY
Intermediate
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.
