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
SmoothiePal
Discover the easiest way to create perfectly balanced smoothies with SmoothiePal — your personal smoothie recipe builder and nutrition companion.
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
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 included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 SmoothiePal: map the core Food & Drink 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 user-generated ingredient submissions and reviews.
Assumption to check: Limited ingredient database leading to poor user experience
Validate with people who use this workflow before building.
Hypothesis 2
Enhance the customization process with more interactive features.
Assumption to check: Difficulty in customizing smoothies
Validate with people who use this workflow before building.
Hypothesis 3
Add social sharing and community recipes.
Assumption to check: Lack of community engagement features
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate nutritional info for each smoothie.
Assumption to check: No nutritional information provided
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
Discover the easiest way to create perfectly balanced smoothies with SmoothiePal — your personal smoothie recipe builder and nutrition companion. Whether you're crafting a high-protein shake, a refreshing fruit blend, or a custom health drink, SmoothiePal helps you design, adjust, and perfect every recipe with precision. Build Smarter Smoothies Create fully customizable smoothie recipes using weight or percentage-based ingredients. Easily adjust ratios and instantly see how your recipe changes. Precision Recipe Scaling Want 300g or 1,000g? SmoothiePal automatically scales every ingredient so your smoothie comes out perfect every time. Nutrition Insights Track calories, macros, and ingredient balance to meet your goals—whether it's muscle gain, weight loss, or daily wellness. Endless Ingredient Combinations Mix fruits, proteins, milks, superfoods, and more. Save your favorite recipes and build your own smoothie library. Fast & Simple Designed for speed and simplicity so you can build, tweak, and blend in seconds. Perfect For: • Fitness enthusiasts • Meal preppers • Smoothie lovers • Health-conscious eaters • Anyone who wants better, smarter recipes Start blending smarter today with SmoothiePal.
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
React Navigation
Zustand
React Query
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.
