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
Soil: Habit Tracker & Planner
Soil is a gentle habit tracker that helps you care for what’s most important in your life
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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 included17 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 Soil: Habit Tracker & Planner: map the core Productivity 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
Incorporate reminders and motivational features.
Assumption to check: Users find it hard to stay consistent with habit tracking.
Validate with people who use this workflow before building.
Hypothesis 2
Add more detailed analytics and reports.
Assumption to check: Limited visualization of habit data.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a calendar view for better progress tracking.
Assumption to check: Difficulty in tracking progress for long-term habits.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce social sharing or accountability groups.
Assumption to check: Lack of community features.
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
Soil is a gentle habit tracker that helps you care for what’s most important in your life. Instead of just checking off tasks, you’ll plant meaningful habits as symbolic plants — each one growing with the attention you give it. Whether it's Call Mom, Move Your Body, or Rest Without Guilt, every habit gets its own plant, its own rhythm, and its own space on your personal table. How Soil works: Soil helps you care for the habits that matter. 1. Each habit is a plant It needs care to stay healthy. 2. Water it daily Each time you follow through, you keep your plant alive and healthy. 3. Miss too often, it wilts Skip too many days, and your habit begins to fade. By using this app, you agree to the Apple Terms of Use and our Privacy Policy. Therms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.privacypolicies.com/live/675883c3-9460-42e9-900d-b9f6c4ec960e
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
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Zustand
react-native-reanimated
expo-router
BUILD KIT DIFFICULTY
Starter
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.
