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.
Classroom is a free service for schools, non-profits, and anyone with a personal Google account
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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 Google Classroom: map the core Education 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.
Classroom is a free service for schools, non-profits, and anyone with a personal Google account. Classroom makes it easy for learners and instructors to connect—inside and outside of schools. Classroom saves time and paper, and makes it easy to create classes, distribute assignments, communicate, and stay organized. Classroom is designed to help teachers create, collect, and grade assignments paperlessly, including time-saving features like the ability to automatically make a copy of a Google Document for each student. It also creates Drive folders for each assignment and for each student to help keep everyone organized. Students can keep track of what’s due on the Assignments page and begin working with just a click. Teachers can quickly see who has or hasn't completed the work, and provide direct, real-time feedback and grades right in Classroom. With the mobile app for iOS, students and teachers can view their classes and communicate with their classmates in real time. Students can open their assignments and work on them right from their iPhone or iPad. Teachers can keep track of who has turned in work and grade the assignment - at school or on the go. Students and teachers receive notifications when they have new content in Classroom, so they are always up to date. There are many benefits of using Classroom: Easy to set up Teachers can add students directly or share a code with their class to join. It takes just minutes to set up. Saves time The simple, paperless assignment workflow allows teachers to create, review, and grade assignments quickly, all in one place. Improves organization Students can see all of their assignments on an assignments page, and all class materials (e.g., documents, photos, and videos) are automatically filed into folders in Google Drive. Enhances communication Classroom allows teachers to send announcements and start class discussions instantly. Students can share resources with each other or provide answers to questions on the stream. Secure Like the rest of Google Workspace for Education services, Classroom contains no ads, never uses your content or student data for advertising purposes. Permissions Notice: Camera: Needed to allow the user to take photos or videos and post them to Classroom. Microphone: Needed to enable audio capture for recording videos to be posted to Classroom. Photos: Needed to allow the user to attach photos or videos to Classroom. Photos or videos posted to Classroom will be stored on Google servers in order to show them in Classroom.
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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 functionality for managing assignments and grades.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface is cluttered and not user-friendly.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor customer support and documentation.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of offline functionality.
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.