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.
WalkGains: Every step echoes back
Free
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.
Your first Build Kit is free with a verified email.
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.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for WalkGains:Walk & Gain More: 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.
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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: Users often find it hard to track long-term progress.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited social features for motivation.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Notifications can be spammy or irrelevant.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of integration with wearables.
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.
WalkGains: Every step echoes back Walking, jogging, daily movement – just get active and start earning real rewards. No complicated rules, no hard targets. The app tracks everything automatically. You just move forward, and let the surprises come. Every drop of sweat turns into visible returns. Move more, earn more. Key Features -Action Mining Daily steps are recorded automatically – every step converts into earnings. See your "step income" trend clearly. Walk more, earn more. -Reward Bazaar Redeem your earned Vitality Coins for popular gift cards and useful goodies. Lightweight tasks designed for beginners – complete them and claim your rewards instantly. Zero pressure, earn while you stroll, and build a walking habit with ease. -Steps Light Up the World Make every stride meaningful. Turn your daily walk into a global exploration journey – each step lights up a world landmark. From the Eiffel Tower to Mount Fuji, your steps become the light. -Achievement Log Collect the landmarks you've lit up, organized by continent. Each comes with a beautiful silhouette, coordinates, year built, and fun facts in multiple languages. Track your exploration progress, earn exclusive continent badges, and filter landmarks by nature, culture, history, or modern marvels. Every achievement leaves a trace. WalkGains is more than just a step counter. It's a power engine that turns your daily movements into real value. It helps you get healthier and earn more, without even realizing it. Start now – make every step count. Privacy Promise Your data belongs to you. All activity and location information is used only with your explicit permission – never shared. Contact us [email protected]
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.
Not assessed in a Build Kit yet.
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.