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.
SP-Slidekick: MFX Controller for SP-404MK2.
$4.99
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.
Your first Build Kit is free with a verified email.
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.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
SP-Slidekick: MFX Controller for SP-404MK2. Take real-time control of your effects like never before. SP-Slidekick is a dedicated MIDI controller that puts every effect bus parameter at your fingertips, designed for live performance, studio sessions, and everything in between. Built exclusively for the SP-404MK2: Every effect, every parameter, every bus, mapped exactly as Roland intended. SP-Slidekick speaks the SP-404MK2's native MIDI language, giving you precise control over all four effect buses and the Input FX channel with zero configuration required. Connect via USB and start performing. Your Layout, Your Way: Build a custom control surface on a free-form canvas grid. Add as many controllers as you need across four pages and arrange them exactly how you want. Your layout saves automatically and is ready the moment you connect. Three Control Types: Faders - Vertical sliders designed for sweeping effect parameters in real time. Assign any effect parameter to the Y axis, add an optional X axis for two-parameter control in a single gesture, and set Hold mode to lock an effect on between touches. Glide Pads - XY touch pads that let you morph between two parameters simultaneously. Tap to glide smoothly to a position, or drag for direct control. Adjustable sensitivity gives you everything from instant snaps to slow cinematic sweeps. Punch-In - Momentary trigger pads that fire a full set of pre-configured parameters on touch and release cleanly when you lift. Swipe down to latch. Perfect for drops, builds, and performance moments that need to hit exactly on time. Master Bus Console - Pull up the full console to dial in all four buses at once — effect type, all six parameters per bus, save and recall snapshots. Your complete SP-404MK2 effects rig in one screen. - Interact with effect parameters in ways you can't on the hardware. - Hold mode keeps effects engaged between gestures - Bus engagement state mirrors hardware in real time - Easily see what effects and Buses are active at a glance - Landscape and portrait layouts supported Make It Yours: Set a custom background image and arrange it exactly how you want it. Assign unique accent colours to each bus so your layout is instantly readable on stage. Rename any control to match your workflow. SP-Slidekick works over USB — simply connect your device to the SP-404MK2 using a USB-C cable or adapter and you're ready to go. Requires a Roland SP-404MK2 connected via USB. A USB-C cable or adapter is required. Disclaimer: SP-Slidekick is not affiliated with, endorsed, or if any way officially connected with Roland or the SP404MKII brand. SP-404 is a registered trademark of Roland Corporation.
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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.
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.
Not assessed in a Build Kit yet.
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.