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
Canvas by Instructure
Your learning, anywhere.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
2,767,861 ratings · Top 15%
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included18 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 Canvas by Instructure: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Your learning, anywhere. Stay connected to your courses with the official Canvas app for learners. Whether you’re in class, commuting, or offline, Canvas helps you stay organized and engaged. Note for instructors: For teaching and grading features, use the Canvas Teacher app. What you can do • Organize: View grades, track assignments, homework, and schoolwork; get reminders, push notifications and add customizable widgets for quick access • Engage: Send messages, join class discussions and collaborate with classmates in real time • Learn: Submit assignments, PDFs, docs, and media files for teachers to annotate in SpeedGrader, take quizzes, and watch videos on the go • Offline: Download full courses and keep studying even without internet • Integration & inclusivity: Use integrated classroom tools (LTIs), enjoy dark mode, and rely on built-in accessibility for everyone (VPAT 2.2 compliant) • Lifelong learning: Support for continuous learning, career-focused skill based learning programs, and AI-powered learning experience via Career experience Trusted by over 40 million learners worldwide.
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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
Implement a more intuitive tab navigation and breadcrumbs for easy access.
Assumption to check: Difficult navigation between courses and assignments
Validate with people who use this workflow before building.
Hypothesis 2
Add offline course downloads and access to content.
Assumption to check: Limited offline capabilities
Validate with people who use this workflow before building.
Hypothesis 3
Introduce badges and rewards for course completions and assignments.
Assumption to check: Lack of gamification features
Validate with people who use this workflow before building.
Hypothesis 4
Simplify layouts and provide better filtering options for assignments.
Assumption to check: Overwhelming information on screens
Validate with people who use this workflow before building.
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.
SUGGESTED BUILD STACK
React Native
Expo
Axios
React Navigation
React Query
BUILD KIT DIFFICULTY
Advanced
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.
