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.
ZenActivity is a powerful, beautifully designed workout timer built for people who want total control over their routines—without complexity.
$3.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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.
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for ZenActivity: 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.
Affiliate link: CloneChart may earn a commission at no extra cost
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
Assumption to check: Limited features for custom workout tracking
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social sharing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase confusion
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No Apple Watch integration
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
ZenActivity is a powerful, beautifully designed workout timer built for people who want total control over their routines—without complexity. Whether you’re practicing yoga, training MMA, building strength, or meditating, ZenActivity adapts to your flow with precision timing, flexible structure, and a calm, focused experience. Design your workouts exactly the way you want, follow them effortlessly, and track your progress over time. Build Your Perfect Routine • Create unlimited workouts, each with a custom name and type • Add unlimited steps per workout with full control over sequence and structure • Categorize steps: Exercise, Stretch, Rest, Meditation, Weights, Cardio, Core, Kettlebells • Set exact durations down to the second (hours, minutes, seconds) • Reorder steps with intuitive drag-and-drop • Duplicate or delete steps instantly with simple gestures Effortless Workout Experience • Clean, distraction-free running screen with workout name and icon • Tap to play or pause your session • Pinch to exit quickly • Runs smoothly in the background while you listen to music • Optional sounds, vibration, and volume per step • Activate Zen Mode for a minimal, distraction-free timer • Subtle haptics reinforce state changes without breaking focus Smart Reminders • Set reminders for individual workouts • Flexible scheduling: daily, weekdays, or weekly with notifications with sound and banner support Track Your Progress • Automatic workout logging • Visual statistics with 7, 30, and 90-day views • Identify your most consistent and top workouts Home Screen Widget • “Favorite Workouts” widget in multiple sizes • Instantly launch workouts directly from your Home Screen Designed for Real Practice ZenActivity is trusted by yoga practitioners, meditation enthusiasts, athletes, and trainers who want a reliable, customizable timer that stays out of the way and supports their rhythm. It’s equally suited for: • Yoga and breathwork • HIIT and interval training • Boxing and MMA • Strength and conditioning • Meditation and progressive relaxation Thoughtful Design • Intuitive interface that’s easy to learn and fast to use • Clean visuals that feel both calming and energizing • Built-in help to guide you through every feature ZenActivity doesn’t just time your workouts—it supports your discipline, focus, and consistency. Let it guide your daily practice.
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.