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
Momentum: Morning Alarm
Momentum is an alarm app that makes you earn the off button and own your mornings.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
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Add to a Remix
Combine features and design from your favorite apps.
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Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 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 Momentum: Morning Alarm: map the core Lifestyle 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
Simplify the interface by minimizing options and offering guided setup.
Assumption to check: Users often find alarm apps confusing due to too many settings.
Validate with people who use this workflow before building.
Hypothesis 2
Include a library of soothing, customizable alarm sounds.
Assumption to check: Many alarm apps lack unique sound options.
Validate with people who use this workflow before building.
Hypothesis 3
Offer a clear value proposition for premium features without disruptive ads.
Assumption to check: Users dislike intrusive ads or paywalls.
Validate with people who use this workflow before building.
Hypothesis 4
Ensure robust background functionality to guarantee alarms ring even when the app is closed.
Assumption to check: Alarm reliability can be inconsistent.
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
Momentum is an alarm app that makes you earn the off button and own your mornings. When your alarm goes off, you have one job: complete a quick physical challenge like push-ups, squats, jumping jacks, a plank hold, or a walk, verified by your camera. Complete your reps and the alarm stops. No snooze. No bypass. No tapping dismisses from the comfort of your pillow. — HOW IT WORKS Set your alarm and choose a challenge. When it fires, your camera opens and you start moving. Hit your target, the alarm stops, and your streak goes up by one. — TRACK YOUR STREAK Every completed morning adds to your streak. Miss one and it resets. The heatmap on your home screen shows the last two weeks at a glance, an honest look at how consistent you've actually been. — ALARM SOUNDS Many different sounds to choose from. Each one is designed to wake you up without making you want to throw your phone across the room. — MORNING GATE After you dismiss your alarm, Momentum can block the apps you choose like social media, news, whatever pulls you in first for up to 90 minutes. The first hour of your morning is yours. Momentum helps you keep it that way. — BUILT TO DO ONE THING No subscription. No streak insurance. No gamification gimmicks. Momentum costs $0.99, lives entirely on your device, and does exactly what it says. Your camera feed stays on your phone. Your alarm data stays on your phone. We don't collect anything.
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
Supabase
react-navigation
expo-sound
zustand
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.
