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
Core Shell
A full featured terminal with built-in OpenSSH support, it’s focused on managing and login to hosts efficiently
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 5.0
1 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 included18 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 Core Shell: 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
Enhance session management with advanced features like session grouping and tagging.
Assumption to check: Limited session management features compared to desktop counterparts.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more organized layout with filters and sorting options.
Assumption to check: User interface may feel cluttered with multiple sessions.
Validate with people who use this workflow before building.
Hypothesis 3
Allow offline mode for previously accessed files and sessions.
Assumption to check: No offline access to saved sessions or files.
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
A full featured terminal with built-in OpenSSH support, it’s focused on managing and login to hosts efficiently. Don't waste your time; be productive. ## Features Full-featured Terminal • Compatible with Terminal.app, iTerm and xterm. • Supports ANSI 16 and 256 color palettes, as well as 24bit true color. • Passed cases of *vttest* – a strict VT100/VT220/VT420 terminal functionality test suite. OpenSSH Compatible • Everything in OpenSSH, certificates, proxy jump, etc. Keychain Integration • Tightly integrated with Keychain, don't have to enter passwords or passphrases repeatedly. • It's totally optionally, you can opt-in or opt-out at any time. Advanced Options Editor • A handy way to tune per-host advanced options. • For every ssh directives, there is a contextual help provides immediate information, no more googling. Automatic Reconnect • Always tries to restore your connections after network failure or waking up from background. Theming • Eight built-in color schemes: Basic, Dracula, Grass, Homebrew, Man Page, Novel, Ocean, Red Sands • Our color optimization ensure that colorful text always clearly visible. Premium Features (free for a limited time) • Unlimited number of connections • Sync profiles between all of your Mac computers and iOS devices • Prioritized customer support ------- We'd love to answer your questions or just hear what you think about Core Shell. Our Community: https://community.codinn.com/c/core-shell Use the community to request support or report bug. Discuss and explore Core Shell’s future with us by joining the community.
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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.
