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
WriteFreely
WriteFreely for iOS gives you a seamless way to publish your thoughts on the web
$11.99 · In-app purchases
PRICE
$11.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.1
8 ratings · Top 30%
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for WriteFreely: 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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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 with rich text editing features.
Assumption to check: Limited formatting options for text.
Validate with people who use this workflow before building.
Hypothesis 2
Add real-time collaboration with other users.
Assumption to check: No collaboration features.
Validate with people who use this workflow before building.
Hypothesis 3
Implement automatic cloud sync for drafts.
Assumption to check: Lack of cloud backup.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to export drafts to various formats (PDF, Markdown).
Assumption to check: No export options for drafts.
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
WriteFreely for iOS gives you a seamless way to publish your thoughts on the web. Write your thoughts in its clean, distraction-free editor, and then publish to your blog or any writing community powered by the WriteFreely software. WriteFreely for iOS supports Write.as and self-hosted WriteFreely instances. If you're not hosting your own instance, visit https://writefreely.org/instances to find a community to join! # Just Write WriteFreely for iOS includes only what you need to write and publish, so you can focus on your words. It launches straight to the editor, so you can get your thoughts down before they vanish. # Write Offline Draft and edit blog posts offline on your iPhone or iPad, and publish whenever you're ready. If you don't publish a post, it remains safe and private on your device. # Stay Synchronized Log in to any WriteFreely instance you have an account on, and sync posts from your WriteFreely account to your device. # Publish Widely Publish to multiple blogs on your account, and move posts between blogs and Drafts with a few quick taps. # Light Customization Make it your own by choosing a default font for your posts, and whether or not you'd like to write in dark mode. # Freedom The WriteFreely platform is built entirely on open source software, from the server-side to this iOS app. Rest easy knowing you ultimately control your publishing tools, and visit https://writefreely.org/contribute to find out how you can contribute.
Written user reviews are not shown here. Check current App Store reviews >
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
Intermediate
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.
