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
Greg: Plant Identifier & Care
Welcome to Greg, the zero-guesswork plant care app & community!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
19,569 ratings · Top 15%
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Greg: Plant Identifier & Care: map the core Education 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 machine learning for better identification.
Assumption to check: Limited plant identification accuracy
Validate with people who use this workflow before building.
Hypothesis 2
Add forums or Q&A sections for users.
Assumption to check: No community features for user interaction
Validate with people who use this workflow before building.
Hypothesis 3
Use user data to provide tailored care tips.
Assumption to check: Lack of personalized care recommendations
Validate with people who use this workflow before building.
Hypothesis 4
Simplify subscription options with clearer explanations.
Assumption to check: In-app purchase confusion
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
Welcome to Greg, the zero-guesswork plant care app & community! We make growing indoor plants super easy and fun. Unsure of how much to water your plant babies? We got you! We'll identify your specific plant type, tell you exactly how much to water it, and remind you when it's time. By downloading Greg, you also join a global community of other passionate plant parents ready to answer questions, nerd out on all things plants, and offer big-time garden inspo. With Greg, it's all about connecting to plants - and each other - to stay reminded of just how interconnected we *all* are on this big, beautiful planet of ours. So, whaddya say? Wanna grow together? Download Greg and let's get started! -> FEATURES Auto-Magical Plant Identification - Scan any plant (for free!) and Greg’s PlantVision will identify the species, tell you all about it, measure the pot, and even the distance to the nearest window Highly-personalized plant care - Trust Greg to develop a custom watering plan based on each plant's species, size, plus the actual details of your home environment Zero-guesswork watering & reminders - Discover *exactly* how much each of your plants is thirsty for, and get a reminder when it's time to water 'em Community troubleshooting - Turn to more veteran growers for answers to any plant questions you have, and get an answer in minutes Thriving global community - Connect with others in #Communities built around shared interests & discover/interact with new plant pals in the app's Social Feed More to come! - We're always looking to grow, so stay tuned for new features as we have 'em… -> USER REVIEWS - "Definitely worth it for someone passionate about plants" - Tree2727 - "Greg is by far the best plant app I've used" - LolaCupcake586369954 - "10/10 have recommended to so many friends so far!" - FireySpirit711 - "This app is a literal life saver for my plants." - Lemonlaw625 - "I've killed every plant I've touched, so this is exactly what I needed!" - 21JazzCat -> PRICING For $29.99 a year (less than $0.08 a day) unlock: Precision Watering -Find out how much H2O each plant needs and never overwater again! Smart Watering Reminders -Receive a notification when each of your plants is ready for watering. Indoor Light Gauge -Ensure that all your plants are getting enough sunshine to survive. Seasonal Updates -Get plant care recs that adapt as the weather in your area changes. Get started with a 7 day trial! We’ll be sure to ping you before the Trial ends in case you want to cancel. Pricing outside of the US may vary, as actual charges will be converted to your local currency. Please note that your subscription will automatically renew unless you turn off auto-renew in your Apple ID Subscriptions settings at least 24 hours before a new period starts. -> JOIN THE GREG COMMUNITY! https://twitter.com/gregsavesplants https://www.instagram.com/gregsavesplants https://www.facebook.com/gregsavesplants -> NEED HELP? You've got questions, we've got answers! Hit us up here: [email protected] -> OUR TERMS Our Privacy Policy: https://greg.app/privacy Our Terms of Service: https://greg.app/terms
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
BUILD KIT DIFFICULTY
Advanced
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.
