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.
Track your water intake with a single tap
$2.99 · 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.
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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 Hydration Streak - Water Log: 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 forget to log their water intake regularly.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited customization options for hydration goals.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Data visualization may not be engaging.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Some users may find the UI unappealing.
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.
Track your water intake with a single tap. Build a streak by hitting your daily hydration goal. Quick-log from your Apple Watch, home screen widget, or right in the app. Hydration Streak is the simplest way to build a daily water drinking habit. No accounts, no subscriptions, no ads — just a clean, focused hydration tracker that works. HOW IT WORKS • Set your daily water goal (in oz or mL) • Tap to log water with preset sizes (8 oz, 12 oz, 16 oz, 20 oz) or a custom amount • Watch your progress ring fill up throughout the day • Hit your goal every day to build a streak — don't break the chain! FEATURES Quick Logging Tap once to log water. Choose from preset sizes or enter a custom amount. Logging takes less than a second. Streak Counter Track consecutive days you've met your hydration goal. The streak is your motivation — see how many days you can keep it going. Progress Ring A beautiful, animated ring shows exactly how close you are to your daily goal. See your oz remaining and cups hydrated at a glance. History Calendar Review your hydration history day by day. See which days you hit your goal and which you missed. Monthly summaries show your consistency. Apple Watch App Log water directly from your wrist. Your Watch app syncs seamlessly with your iPhone so every sip counts. Home Screen Widgets Small widget: progress ring + oz remaining. Medium widget: progress ring + streak + recent logs. Glance at your progress without opening the app. Apple Health Integration Automatically sync your water intake with Apple Health. Reads logs from other health apps so your daily total is always accurate. Smart Reminders Set periodic reminders to drink water throughout the day. Configure the interval and set quiet hours so you're never bothered at night. PRIVACY FIRST All your data stays on your device. No accounts, no servers, no tracking, no analytics. Health data syncs only through Apple's encrypted HealthKit ecosystem. Your health data is yours — period. DESIGNED FOR SIMPLICITY No calorie counting, no food logging, no meal plans. Hydration Streak does one thing and does it well: helps you drink enough water every single day. One-time purchase. No subscriptions. No in-app purchases. No ads. Ever.
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.