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.
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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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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 Lark - Team Collaboration: 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: Users find it hard to manage notifications across different channels.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Complexity in onboarding new users.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited integrations with other productivity tools.
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.
Make team communication effortless with Lark. No more wasting time toggling between multiple programs and documents. With Lark, you have everything you need in one spot, helping your team be successful no matter where they're located. Main features of Lark Built-in chat and messenger Docs with easy-to-use templates Video meetings Simple calendar Email Approval system Powerful no-code apps through Base Wikis that are easy to set up OKR tracker Magic Share File sharing Improving team efficiency with Lark Lark is the perfect solution for global teams or businesses that are looking to centralize all of their tools into one platform. Globally distributed teams can use Lark's productivity app to communicate across languages and time zones. Why choose Lark Excellent reviews on iOS from more than 1,700 real customers – 4.9 out of 5 stars State-of-the-art collaboration tool reduces the need for other software Save time by having everything your team needs in one place Affordable all-in-one solution saves companies money Auto-translation for video meetings and chat empowers easy global communication Intuitively adopted by all skill levels Try Lark for free Our customers love sharing "Best collaboration software ever used! It's the most comprehensive enterprise tool in existence." - infraguru "I am a consultant and have used all of the popular collaboration tools on the market (ex: Google Suite, Facebook Workplace, Slack, Zoom, etc). Lark's functionality incorporates all the pros of the rest of the aforementioned tools, super easy to use, and truly centralizes everything an employee needs to use/look for within one platform. It's absolutely a phenomenal product!" - Rocket Racoon 1118 "Would be frustrating having to switch from Gmail to Slack, then back to google calendar then having to download Google Docs, open document, forward it to a specific person then on and on and on. If that resonates with you or your team in anyway, Lark is a life saver. One platform with everything your team needs!" - Jimmy_lee2430 - Pricing plan: Everything in Lark free plan, and - Unlimited message history - 50,000 automated Base workflow executions / month - Unlimited Wiki spaces - Video conference with up to 500 attendees, up to 24 hours duration - Unlimited AI meeting transcription - 15TB storage - 10 trusted parties for external collaboration - More security and permission controls - 50 AI notes per month - Real-time meeting notes - AI-powered action item extraction - Customized notes for each meeting - Customer Terms of Service: https://www.larksuite.com/en_us/customer-terms-of-service?from=footer - Privacy Policy:https://www.larksuite.com/en_us/privacy-policy?from=footer Contact If you have any questions, please email us at [email protected]
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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.