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.
MHz — wireless frequency coordination that travels with you.
$2.99
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.
Rork plan preview for MHz: map the core Business 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.
MHz — wireless frequency coordination that travels with you. Whether you're mixing monitors on a world tour or setting up two handhelds in a school hall, MHz helps you find clean, legal frequencies for wireless microphones and in-ear monitors — anywhere, even offline. Find clean spectrum, anywhere Location-aware lookups show you which TV channels and white spaces are actually free where you're standing. In the United States, United Kingdom, Canada, and Australia, the full transmitter database is bundled into the app — no signal required. In Denmark, Sweden, Norway, and Finland, MHz queries the national regulators' own live frequency services for the most current picture, and regulation summaries for 40+ more countries are always available offline. Talk to your gear. Link MHz directly to Shure and Sennheiser hardware on your network. See live RF and battery status, push frequencies to your receivers, or pull their settings into your show file — per channel or a whole group at once. Collaborate with your crew. Share frequency groups with other MHz users via iCloud. Everyone sees the same plan, updates arrive with push notifications, and nobody's working from an outdated spreadsheet. Import and export freely. Bring in coordination files from Wireless Workbench and Soundbase, merge them into your groups, and export frequency ranges back out. MHz plays nicely with the tools you already use. Actually understand RF. The built-in Intermod Tool teaches you intermodulation from first principles — interactive chapters plus a playground where you drag transmitters around a virtual stage and watch the spectrum react. Great for students, ATDs, and anyone who's ever asked "why does channel 3 drop out when channel 5 keys up?" No accounts, no subscriptions to your own data — your coordination lives in your iCloud.
Written user reviews are not shown here. Check current App Store reviews >
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.