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.
Struggle free, healthy and practical recipes that are easy on the wallet
$3.99 · 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 FitMenCook - Healthy Recipes: 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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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: Limited recipe variety and customization options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchase confusion
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Slow loading times for images
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social sharing features
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.
Struggle free, healthy and practical recipes that are easy on the wallet. It’s as simple as that, and it’s a message that’s seen over 1 million people follow FitMenCook on social media. Be honest, have you ever heard these complaints about healthy eating? - “Eating healthy is too expensive!” - “It takes too long! I don’t have hours to spend in the kitchen.” - “Healthy food is too bland” - “I always end up cheating and slipping back in to bad habits” Kevin Curry, founder of FitMenCook, has been there. After spotting a picture of himself on a friend’s Facebook wall he knew it was time for a change. He followed all the common advice, changed to a healthy diet and started hitting the gym. For a few months, things were great, but after a while he found himself craving the old foods he was trying so hard to avoid. He got his hands on every book he could find on nutrition and started experimenting in the kitchen. His aims were simple: A) Food should be easy to prepare and affordable B) Food should be vibrant and tasty, never boring C) Preparing food in advance is important D) Following a, b, c helps you achieve your fitness goals The results for Kevin were game change and now he’s spreading message to the FitMenCook community on social media and inside the FMC app. Top 5 features: #1 SHOPPING CART + APPLE WATCH We've taken the hassle out of grocery shopping. Add any recipes you want to your shopping list and we'll organise the list by aisle, so you can easily find the items you need. The shopping list also works on the Apple Watch. #2 EASY STEP BY STEP VIDEO INSTRUCTIONS If you’ve ever looked at recipe instructions and thought “this just looks too difficult for me” then you’ll find the included recipe videos very helpful. Not only is Kevin a great host, who’ll fill you with inspiration for healthy meals, but he’ll also break down the steps in a way that’s easy to follow. #3 FOCUS ON MEAL PREP Buying ingredients in small quantities can make recipes more expensive. Not only that, but many of us don’t have time every day to spend in the kitchen. Meal prep is the solution. By designating two days of the week as your main cooking days, you can prepare your meals in bulk and eat healthy all week. This is a crucial part of the app, and many of the meals are designed with meal preparation in mind, to make healthy living fit with a busy life. #4 MACRO COUNTING AND INTEGRATION WITH APPLE HEALTH APP Bodybuilders and fat-loss superheroes can rejoice as the FitMenCook app has nutritional information built right in! Recipes list calories, protein, carbs and fat. This data can then be shared with the Apple Health app. 5# SCALE UP A RECIPE Increase the serving sizes by tapping the + and - buttons in the recipe view. You can also switch the measurements between metric and imperial. There’s more including: - 750+ recipes with more added each month - Search by ingredient: Type in Egg Avocado to see all recipes containing both of these ingredients - Share recipes with friends and family - Available in English and Spanish For a video demonstration of the app in action, take a look at: http://fitmencook.com/app/ Optional Meal Planner Subscription: FitMenCook Pro is available as a monthly (0.99 USD) or yearly (5.99 USD) subscription. The subscription will automatically renew unless cancelled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing. Payment will be charged through your iTunes account at confirmation of purchase. Once purchased, refunds will not be provided for any unused portion of the term. Your subscription may be managed and auto-renewal may be turned off by going to your iTunes Account Settings after purchase. Terms of Use: http://nibbleapps.com/terms/ Privacy Policy: http://nibbleapps.com/privacy/
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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.