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
Google Gemini
From your morning commute to late-night deep dives, Google Gemini is your personal, proactive and powerful AI assistant.
Free · In-app purchases
OVERALL US RANK
#11
Free · all categories
REVENUE (Est)
$469K/mo
$278K - $660K
RATING
★ 4.7
2,398,189 ratings · Top 15%
Evidence scope: #11 is the current overall US Free chart position. 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 Google Gemini: map the core Productivity 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
From your morning commute to late-night deep dives, Google Gemini is your personal, proactive and powerful AI assistant. WHY USERS LOVE GEMINI • Our latest models, Gemini 3.8 Flash and Gemini Omni, unlock a new world of productivity and creativity. • Gemini Spark 24/7 personal AI agent proactively manages tasks and helps you navigate your digital life, all under your direction. • Daily Brief agent gives you a personalized morning brief and organizes exactly what you need to know to start your day. • Talk things out with Gemini Live: Brainstorm in real time or share your screen/camera to discuss exactly what you see. • Instead of a wall of text, you get carefully crafted responses with interleaved images, timelines, and interactive visuals. • Get more personalized help by connecting your favorite Google apps like Gmail, Calendar, Google Photos, YouTube, and Search. • Upload documents, spreadsheets, photos, videos, and more to get answers, summaries, and insights about your content. BRING YOUR CREATIVE IDEAS TO LIFE • Generate and edit photos with Nano Banana 2: Apply camera and lighting controls, create mockups by blending multiple images, design posters with sharp text, and effortlessly build diagrams. Then, resize as needed. • Turn your ideas into cinematic videos with Gemini Omni for Google AI Plus, Pro, Ultra, and Workspace users. • Create custom soundtracks for any moment with Lyria 3. BOOST YOUR PRODUCTIVITY • Research with NotebookLM: Get deeper, more relevant responses that are grounded in the sources in your notebook • Study help and exam prep made easy: Upload your class notes to generate custom practice quizzes and interactive visuals. • Turn a simple prompt into a prototype: Build web pages, games, or dashboards. You can even convert your files into a podcast-style overview to listen to while you're on the move. UNLOCK MORE WHEN YOU UPGRADE Level up your Gemini app experience by upgrading to the Google AI Plus, Pro, or Ultra plans, helping you tackle more complex tasks and projects. Review the Gemini Apps Privacy Notice: g.co/gemini/privacynotice. Note: While Gemini is a powerful productivity partner, it does not currently support iOS device actions like setting alarms or sending SMS directly. Gemini for Business is available via qualifying Google Workspace plans.
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 guided onboarding process to help users set up their tasks.
Assumption to check: Users often feel overwhelmed with task management.
Validate with people who use this workflow before building.
Hypothesis 2
Add a powerful search feature with filters for tasks.
Assumption to check: Difficulty in finding tasks among many projects.
Validate with people who use this workflow before building.
Hypothesis 3
Provide more customizable options for task tagging and prioritization.
Assumption to check: Limited customization for priorities and tags.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance cloud synchronization to ensure data consistency.
Assumption to check: Sync issues between devices.
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
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BUILD KIT DIFFICULTY
Expert
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.
