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
Momento: Live Events
Momento is your home for live sports and music events
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
1,880 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Momento: Live Events: map the core Sports workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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 advanced filtering and recommendation algorithms.
Assumption to check: Limited event discovery options
Validate with people who use this workflow before building.
Hypothesis 2
Offer more free features or a trial period.
Assumption to check: Paywall can deter users
Validate with people who use this workflow before building.
Hypothesis 3
Standardize navigation patterns across the app.
Assumption to check: In-app navigation inconsistencies
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social media sharing options for events.
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Momento is your home for live sports and music events. Capture, share, and relive your defining moments. Build your Event Archive Create a record of every game, concert, and show you've attended, past and present. Our verified event database spans 800+ sports leagues and over 3.5 million concert performances. Your timeline tells the full story. Track what matters Go beyond a simple list. Momento surfaces stats, milestones, and patterns that reveal how your fandom has grown — from your first show to your hundredth game. Hold on to the Moment Personalize and share Momentos — digital stubs that bring your event memories to life. Add your own photos, tag the friends you were with, and choose from a collection of Skins to change the look and feel of each Momento. Every Momento captures the details, context, and emotion of being there, turning a single event into a lasting piece of your fan journey Flex your Fandom Your profile is your fan identity — a visual showcase shaped by what you've actually experienced. Pick your favorite teams and artists, and let your real-life attendance speak for itself. Explore the Community Every event holds stories from many different perspectives. Community View lets you explore photos and videos from other fans who were at the same event, adding new layers to memories you already share. Relive and Share Turn memories into custom recaps you can keep or send to friends. Tag the people you were with, add your own photos, and extend the life of every experience. Built for Real Fans Momento is IRL-first—a community rooted in real attendance. Discover and connect with fans through the events you've actually been to, not just the ones you follow online. You earned these moments. Keep them with Momento.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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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
Zustand
Supabase
React Navigation
Axios
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.
