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
Velo 5k
Pay once
$4.99 · In-app purchases
PRICE
$4.99
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.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
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 included15 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.
JavaScript is required to complete mailbox verification.
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 Velo 5k: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Incorporate social features and challenges to enhance motivation.
Assumption to check: Users often find it hard to stay motivated for workouts.
Validate with people who use this workflow before building.
Hypothesis 2
Simplify progress tracking with visually appealing charts and summaries.
Assumption to check: Tracking progress can be cumbersome in many apps.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to create and customize their own workout plans.
Assumption to check: Limited customization options for workouts.
Validate with people who use this workflow before building.
Hypothesis 4
Create a community feature where users can share tips and support each other's goals.
Assumption to check: Lack of community support in fitness apps.
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
Pay once. Run forever. No subscription. Velo 5K is a 9-week running program built for complete beginners. It takes you from your first shaky jog to running 30 minutes straight — no experience, no fitness base, no idea what you're doing required. Just press play and go. THE PROGRAM 27 guided workouts across 9 weeks, three runs a week. Each one is 25–30 minutes with a warmup, run/walk intervals, and a cooldown. The intervals get longer as you get stronger. Week 1 starts with 60-second runs. Week 9 ends with a continuous 30-minute run — your first 5K. VOICE-GUIDED EVERY STEP A coach in your ear tells you exactly when to run and when to walk. Choose a male or female voice, adjust the volume, or mute it entirely. Your music keeps playing between cues — Velo 5K ducks the volume during coaching, then brings it back. APPLE WATCH SUPPORT See your current interval, time remaining, and heart rate on your wrist. Pause, resume, or skip directly from your watch. Workouts save to Apple Health automatically. YOUR DATA STAYS YOURS No account. No sign-up. No cloud sync. Everything is stored locally on your device. Your progress, your workouts, your data — full stop. EVERYTHING INCLUDED 27 workouts, 9-week structured program Voice coaching (male & female) Apple Watch companion app Apple Health integration (distance, calories, heart rate) Weekly workout reminders Supports km and miles One purchase. No subscriptions, ever. Everything unlocked. Nothing hidden.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
zustand
react-native-chart-kit
@react-navigation/native
BUILD KIT DIFFICULTY
Intermediate
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.
