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
Gizmo: AI Tutor
Gizmo is the easiest way to learn
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
16,383 ratings · Top 5%
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 Gizmo: AI Tutor: 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
Gizmo is the easiest way to learn - AI Import: Import anything and turn it into flashcards fast! You can convert Quizlet, Anki, YouTube, PDF, Notes, PowerPoint, and more! - Scan notes: Scan handwritten notes to turn them into flashcards and quizzes - Quizzing: Fun quizzes make learning feel like a game - Spaced repetition and active recall: Gizmo uses the most advanced techniques to help you remember what you learn - Pre-made decks: Quickly find 1,000,000+ free public flashcards made by other students - Organised: Organise your studying with files and decks - Gamified: Make study into a game! - Free flashcards - AI learning assistant / AI tutor - Active recall quizzes - Spaced repetition - Leaderboards and study games - Simple and minimalistic aesthetic - Scan pictures and photos to make flashcards - Shared decks - Multiple choice questions - Written questions As seen on TikTok and Instagram Terms of use - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Written user reviews are not shown here. Check current App Store reviews >
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 clear progress tracking system with visual feedback and notifications.
Assumption to check: Users may find it difficult to track their learning progress.
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate interactive features such as live Q&A or personalized feedback.
Assumption to check: Limited interaction with the AI tutor can lead to a less engaging experience.
Validate with people who use this workflow before building.
Hypothesis 3
Provide a robust offline mode for course downloads.
Assumption to check: Some users report difficulty in accessing offline content.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the subscription process and clarify benefits of different tiers.
Assumption to check: Subscription model can be confusing for users.
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.
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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.
