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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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 Runway: AI Image & Video: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Make anything with Runway — the AI image and video generator with every model you need in one app. Seedance 2.5, Kling 3 Pro, Gen-4.5, Nano Banana Pro, Nano Banana 2 and more. Generate video from a text prompt. Turn any photo into motion. Create images in any style, with consistent characters, objects and locations across every shot. Or just describe the video you want and let Runway Agent build the whole thing. Your first generation takes about two minutes. EVERY MODEL. ONE APP. Runway is the only creative app with Seedance 2.5, Kling 3 Pro, Gen-4.5, Nano Banana Pro, Nano Banana 2 and more, all in one place. Pick the best model for the job. No tool-hopping, no separate subscriptions. AI VIDEO GENERATION Text to video, image to video and video to video. Generate cinematic scenes, social posts, ads, music videos and short films at professional quality. AI IMAGE GENERATION Create images from a prompt or a reference photo. Photorealistic, illustration, anime, concept art, product shots, storyboards and character design. RUNWAY AGENT Create end-to-end videos with a simple conversation. Describe what you want in plain language and Agent plans the shots, generates them and assembles the finished video. Ask for a change and it makes it. No timeline, no prompt syntax, no complex tools to learn. CONSISTENT CHARACTERS AND WORLDS Keep the same character, object or location across every generation, so a series of shots actually looks like one story. WHAT YOU CAN MAKE - Short films and cinematic scenes - Marketing ads and product videos - Logos, flyers and event invitations - Music videos - Social videos and reels - Storyboards, animatics and concept art - Character designs and avatars - Animation from a single still image TRUSTED BY THE CREATIVE INDUSTRY Runway is used by AMC Networks, Lionsgate, The Late Show with Stephen Colbert and millions of creators, filmmakers, designers and marketers worldwide. START ON YOUR PHONE, FINISH ANYWHERE If you already have a Runway account, your work syncs between your phone and your computer automatically. New models and features are added regularly, so you always have access to the latest. Free to start. Subscription plans available for more credits, higher resolution and faster generation. Terms of Use: https://runwayml.com/terms-of-use Privacy Policy: https://runwayml.com/privacy-policy
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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 advanced editing features compared to PC software
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Subscription model may deter casual users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Occasional performance lag with heavy edits
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Steep learning curve for new users
Validate with people who use this workflow before building.
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.