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.
Write Only is dedicated to creative writing rather than busy editing
$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 Write Only 2: map the core Productivity 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: Limited formatting options for text
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Poor user reviews regarding performance
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of cloud sync options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No collaboration features
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.
Write Only is dedicated to creative writing rather than busy editing. It helps you focus more on putting words on paper. Using it is like sitting in front of a typewriter and watching words flow out of your finger tips. Everything you put down on the page is permanent. All the typing is saved as a PDF file, including the positions, the font size, and the colors that the texts come out with. No matter where and when you are going to view these pages, they will be kept exactly same as the time you typed them. Fixed cursor sits right above the keyboard, therefore your eyes will be close both to the text you're typing and the fingers, and that can help to reduce typing errors. You can start typing on the page at any place by tapping on that location and use any margin you want by moving the page. It is very easy to type aligned texts. An extension keybar includes frequently used keys like ' or ; that are difficult to access in iOS' default keyboard. Write Only is good for writing the first draft of any work, especially poetry, diary or journal. When you come back to your writings years later, the shapes of the text and the errors you made will help you recall the moments of the writing. FEATURES - Sync with iCloud Drive - Beautiful typewriter font. - Minimal interface. - Saved as a PDF file that you can print to paper. - Accessory keybar contains frequently used keys missing in the default keyboard. - Two text colors: black and red.
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.
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.