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.
Plume is a Dreamcast emulator built for iPhone
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Plume!: map the core Entertainment workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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
Assumption to check: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor performance
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Plume is a Dreamcast emulator built for iPhone. A polished library, many graphics options, and controls for both handheld and couch coop! Add titles through the Files app, AirDrop, or Share → Plume. Supported formats include GDI, CDI, CHD, CUE, BIN, ZIP, and ELF. A small homebrew demo ships with the app so you can try the core on first launch. Retail BIOS files are optional — turn on Fast Boot to skip the splash, or add dc_boot.bin and dc_flash.bin from hardware you own for the full boot sequence. LIBRARY Your collection lives in one place with cover art, metadata, favorites, and played time. After you run a title, Plume grades how it performs on your phone — Excellent, Good, Playable, and more — so you know what to expect before you boot. CONTROLS Use fully customizable on-screen controls, or pair a Bluetooth gamepad in iOS Settings and remap every button in Plume. Dreamcast has four controller ports. Touch controls fill port 1 when nothing else is connected. Rumble, haptics, and light-gun support are built in. CONSOLE MODE Mirror your phone to a TV over AirPlay or HDMI. In Console mode the game renders on the big screen while your iPhone stays the controller — perfect for couch sessions. GRAPHICS & PERFORMANCE Tune internal resolution, aspect ratio, CRT shaders, texture filtering, and upscaling. MetalFX spatial and temporal upscale is available on supported Apple silicon. HD texture packs, neural upscale models, and an Upscale Studio help older titles look sharper. A live HUD shows FPS, frame time, CPU, RAM, and more. SAVE STATES & VMU Save and load states from the in-game menu. Slots appear on library covers for quick resume. Per-game VMU files keep memory cards where they belong. RETROACHIEVEMENTS Sign in to RetroAchievements and earn badges while you play. Hardcore mode disables save states for a classic challenge. CAPTURE & SHARE Take screenshots and record gameplay in-game. Saves go to Documents or Photos. Attach captures to save-state slots if you want a visual bookmark. SOUND & STYLE Menu music with downloadable tracks or your own imports. Deep theme controls for colors, fonts, corners, and accessibility — including Bold Text and Button Shapes when iOS has them on. REQUIREMENTS Plume is iPhone only. Requires iOS 18 and iPhone 13 or newer. Dreamcast emulation is demanding — your device may warm up during play, and heavy 3D titles may not hit full speed on every phone. Plume uses a cached SH4 interpreter (no JIT), so performance depends on your CPU. SUPPORT & SOURCE Questions, bug reports, and betas: join our Discord from Settings → About. Source code is GPL-3.0-or-later at github.com/MuffinFluffin/plume-archive. LEGAL Plume does not include commercial games or a retail BIOS. You are responsible for content you import. Only use game files and firmware you legally own.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.