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
Gantry
Gantry is a native iOS app for managing Docker containers from anywhere
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Gantry: map the core Developer Tools 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
Focus on adding features like collaboration tools and Gantt charts.
Assumption to check: Limited project management features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a cleaner, more organized UI.
Assumption to check: User interface might feel cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Add charts and graphs for project tracking.
Assumption to check: Lack of data visualization options.
Validate with people who use this workflow before building.
Hypothesis 4
Offer integrations with popular tools like GitHub and Slack.
Assumption to check: No integration with other tools.
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
Gantry is a native iOS app for managing Docker containers from anywhere. Whether you're monitoring a homelab server, checking on a VPS, or managing containers over Tailscale — Gantry puts full control in your pocket. CONTAINERS View all running, stopped, and paused containers at a glance. Start, stop, restart, pause, and unpause with a single tap. Remove stopped containers when you're done. LIVE LOGS Stream container logs in real time with syntax-aware colorization. Pause and resume the stream, export via the iOS share sheet, or copy individual lines. TERMINAL Run commands inside any running container using Docker exec. Quick-access chips for common commands — ps, env, df, id, ports, uname, and more. PROCESS VIEWER See every process inside a container with docker top. Scrollable table with per-column sizing. REAL-TIME STATS Monitor CPU and memory usage with live charts that build over time, updating every 10 seconds. IMAGES Browse images by tag, size, and creation date. Remove unused images with a tap. iCLOUD SYNC Your Docker host list syncs automatically across all your devices. NATIVE — NOT A WEB WRAPPER Every screen is hand-crafted SwiftUI. No WebView, no React Native, no Electron. Just a real iOS app. — To connect Gantry to a Docker host, the Docker daemon must be reachable over the network. Recommended: bind Docker to a Tailscale IP for secure access from anywhere without exposing ports to the internet.
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
@react-navigation/native
@react-native-async-storage/async-storage
axios
Zustand
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.
