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
Walkfit Daily
Walk more
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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 Walkfit Daily: 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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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
Implement social challenges and rewards for milestones.
Assumption to check: Users often feel a lack of motivation to keep tracking their steps.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize their goals and track personal achievements.
Assumption to check: Apps in this category often lack personalization options.
Validate with people who use this workflow before building.
Hypothesis 3
Add graphs and charts to display historical activity trends.
Assumption to check: Limited data visualization for progress tracking.
Validate with people who use this workflow before building.
Hypothesis 4
Create an easy-to-use manual entry interface for activities.
Assumption to check: Difficulty in logging activities manually.
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
Walk more. Move better. Build healthier habits. WalkFit helps you move more every day through personalized step goals, automatic activity tracking, guided walking experiences, and simple workouts that fit your lifestyle. Whether you're trying to lose weight, become more active, or build healthier habits, WalkFit turns everyday movement into measurable progress. AUTOMATIC STEP TRACKING All your movement counts. Connect WalkFit with Apple Health to automatically track your steps and daily activity. See how close you are to your goal, follow your progress, and stay motivated throughout the day. TRACK YOUR PROGRESS See how you're doing every day. Sync with Apple Health to automatically track your steps and activity, monitor your progress, and celebrate milestones as you build healthier habits. GUIDED WALKING EXPERIENCES Need a little extra motivation? Choose from guided walking sessions designed to help you reach your daily goal, whether you're walking around your neighborhood or inside your home. TAI CHI AND LOW-IMPACT WORKOUTS Feel like doing something different today? Complement your daily walks with a growing library of low-impact workouts, including Tai Chi, dance, indoor walking, mobility, stretching, and beginner-friendly cardio. SMALL STEPS. LASTING RESULTS. Healthy habits are built one day at a time. WalkFit helps you stay consistent with achievable goals, clear progress tracking, and enjoyable daily movement that fits your routine. What's included Personalized daily and weekly step goals Automatic activity tracking Guided walking sessions Tai Chi and low-impact workouts Indoor walking programs Progress tracking and activity history Beginner-friendly movement plans Every step matters. Start moving toward a healthier, more active life with WalkFit Daily. WalkFit Daily Privacy Policy: https://walkfit-daily.com/legal/privacy WalkFit Daily Terms of Use: https://walkfit-daily.com/legal/ter
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 Native
Expo
Supabase
Zustand
react-native-reanimated
expo-haptics
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.
