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
JStepWatch
Introducing JStepWatch – your ultimate solution for effortless activity tracking, right from your watch face! Say goodbye to the hassle of navigating through endless screens to find crucial health data
$0.99 · In-app purchases
PRICE
$0.99
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
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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 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 JStepWatch: 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.
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Continue in Rork >
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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
Incorporate gamification elements like rewards for achieving step goals.
Assumption to check: Limited motivation features
Validate with people who use this workflow before building.
Hypothesis 2
Add features to share achievements on social media or with friends.
Assumption to check: Lack of social sharing
Validate with people who use this workflow before building.
Hypothesis 3
Implement compatibility with fitness trackers and smartwatches.
Assumption to check: No integration with wearables
Validate with people who use this workflow before building.
Hypothesis 4
Enhance the design with modern UI trends and user-friendly navigation.
Assumption to check: Basic UI/UX
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
Introducing JStepWatch – your ultimate solution for effortless activity tracking, right from your watch face! Say goodbye to the hassle of navigating through endless screens to find crucial health data. With JStepWatch, all the essential insights into your daily activity are available at a glance, empowering you to stay on top of your fitness goals without interruption. Track your steps, distance, flights climbed, and stand minutes with unparalleled convenience. No need to open the activity app and scroll through multiple views – everything is instantly accessible from your watch face. Want to see how today compares to your past performance? JStepWatch also provides detailed charts, letting you effortlessly track your progress over the last 7 days. Powered by HealthKit, JStepWatch seamlessly integrates with your health data, displaying real-time updates directly from your device. During the quick setup process, simply authorize access to HealthKit, and rest assured – your data stays secure. JStepWatch only reads and displays information; it never alters or shares your personal health data. Your stats are refreshed automatically, in sync with WatchOS updates, keeping your watch face updated throughout the day. Experience a smarter, more efficient way to monitor your activity with JStepWatch – fitness tracking has never been so simple and seamless!
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 Navigation
Expo
Supabase
React Native Paper
@react-native-community/progress-bar
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.
