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.
Stay accountable and make counting carbs and macros simple with Carb Manager! We make it easy to manage low-carb eating, with UNLIMITED free barcode scan, and ALWAYS free net carb tracking
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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.
Kit ready. Verify your email to download it.
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 Carb Manager: Keto & Macro Log: 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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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 food database which might not include all food items.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Subscription model can be confusing with multiple tiers.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: App can be slow when loading large amounts of data.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social features to connect with other users.
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.
Stay accountable and make counting carbs and macros simple with Carb Manager! We make it easy to manage low-carb eating, with UNLIMITED free barcode scan, and ALWAYS free net carb tracking. From Keto to Low Carb, Paleo, Carnivore, and more, we help you go beyond counting macros and calories to help you achieve ideal metabolic health with our robust macro tracker, and more! Get the exact tools and resources you need to eat, sleep, feel, age, and perform your best. We make it easy to log each meal: scan your barcodes or snap a pic of your plate to track macros in seconds! If you’re looking for the #1 Keto diet app, we’ve got you covered with free net carb tracking, 5,000+ healthy recipes, monthly challenges to hold you accountable, an intermittent fasting tracker, meal plans, and so much more! Whether you’re brand new to Keto and low-carb diets, or you’re a seasoned pro who’s tired of using generic diet apps and calorie counters that don’t fit the way you eat, we’re excited to welcome you to the Carb Manager family and our one of a kind Keto tracker! CM is your one-stop destination for living a healthy low-carb lifestyle. We've bundled expert-written articles, forums, recipes, a meal planner, an intermittent fasting tracker, a Keto video crash course, a community with weekly challenges to help members lose weight together, and more. Here for diabetes management? You’ll love our diabetic carb counter, trusted by thousands of users to manage carbs and macros. Track blood sugar, ketones, and net carbs. Ready to try intermittent fasting or OMAD? Try our built-in fasting app to track IF times and eating windows & visualize the impact on your weight goals with our intuitive graphs and meal tracker. CORE FEATURES OF OUR DIET TRACKER • Keto calculator: Track net carbs, macros, and more with our Keto food tracker • Macro calculator: Track carbs, fats, & protein • Calorie counter: Use our calorie tracker to set a calorie goal based on body weight & goals • Nutrition tracker: Search 1M+ foods with our easy macro and Keto carb counter, including net carbs and sugar alcohols • Water logging • Exercise logging: Log exercises and workouts, including cardio and weight training • Weight management: Measure and chart weight loss and BMI GET MOTIVATED & EDUCATED • Connect with friends or join our community to share progress & stay accountable • Learn with exclusive articles about topics like the Keto flu, IF & OMAD, different low-carb diets & stay current on the latest news and health research TAKE IT TO THE NEXT LEVEL WITH PREMIUM For the ultimate Low Carb and Keto macro tracker, try CM Premium! • 5,000+ Keto recipes (with 100s added each month!) • Diabetes tracker: Track blood glucose (blood sugar), ketones, and insulin for meals. Diabetes carb counter included! • Fasting app: Explore intermittent fasting or OMAD with our easy fasting tools! • Carb cycling features built into our robust keto diet tracker • Track micronutrients • Advanced reports: Streaks, meals analysis, correlations, benchmarks, projections, and macros analysis • Comprehensive health metrics: Chart and set goals for 30+ nutrients and health vitals • Connect fitness devices to track steps and activity • Weight loss prediction engine • Private groups for family, friends, clients, or social media followers SUBSCRIPTION PRICING & TERMS Carb Manager is always free to download and use! If you choose to upgrade to Carb Manager Premium, we offer an annual subscription with more details in-app. Payment is charged to your iTunes Account at purchase confirmation. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Subscriptions may be managed and auto-renewal turned off by going to Account Settings after purchase. No cancellation of the current subscription is allowed during the active subscription period. Privacy & TOS: https://www.carbmanager.com/privacy https://www.carbmanager.com/terms
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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.