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.
At InBody, our goal is to bring evidence-based health and wellness data to more individuals so they can find health clarity that stretches far beyond a singular number on a scale
Free · 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 InBody: 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: Inconsistent data accuracy from devices
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited free features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Slow loading times
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.
At InBody, our goal is to bring evidence-based health and wellness data to more individuals so they can find health clarity that stretches far beyond a singular number on a scale. Using our mobile app in conjunction with one of our body composition analyzers or blood pressure monitors, users can directly measure muscle, fat, water, and blood pressure to see how these values, when combined with activity levels and nutritional habits, create a snapshot of whole body health. By regularly reviewing this information, individuals will be able to track progress over time and use this progress as momentum for continued, healthy improvement. Use the InBody App to: ● Evaluate key summaries of recent InBody Tests, active minutes, and nutritional information from the new overview dashboard ● View historic data for body composition in up to one month increments ● Review accurate body composition testing results, graphs, and interpretations ● Monitor blood pressure levels by comparing test results over time ● Manage caloric outputs and monitor daily movement, such as step counts and active minutes, through our training log. Use values to see how they correlate with changes in body composition over time ● Record daily exercise and food intake using our digital tracking log ● See your national ranking and start healthy competitions with friends and family, based on your InBody Score and weekly step count ● Track sleep time by syncing the InBody BAND 2 with the app What’s New Hey there. You’re not alone during this transformative time. We’re currently undergoing some healthy composition changes to help further simplify your understanding of personal health and wellness. Our new makeup looks a little something like: - An improved app dashboard, which displays data on your latest InBody Tests, blood pressure outputs, daily activity levels, body composition goals, and nutritional progress. - A blood pressure hub where you can review the history of your BP 170 and BP 250 test results. - An updated Result Sheet that provides visual representations of changes in body composition analysis, including fluctuations in skeletal muscle, body fat, body water, and more. *Please note: Output availability will vary depending on the InBody device used for testing. - A graphic depiction of differences in segmental body composition that is available to testing facilities using LookinBody Web with an InBody 570 or 770 unit. - A digital diet and exercise log that can be used to fit healthy changes into your current lifestyle. Within this section, you can also set attainable muscle and fat goals based on scientific data formulated by the InBody Clinical Research team. *Please note: The guide(s) are for reference purposes only and should not be taken as professional medical advice. - An enhanced connection between your InBody wearable device and the app. By working together, these technologies can help you effectively track daily activity levels and sleep habits over time. - An online training journal that you can use to record time spent exercising and analyze body composition changes in relation to activity type, time, and intensity. - A way to see how you measure up. Use our national rankings board to start a friendly competition between peers at your testing facility, friends, or family members. *InBody App provides that Users can sync steps / body composition data to the Apple Health app. * This app is not intended for medical diagnosis or treatment. It provides health and wellness information for general reference only. Medical decisions should be made in consultation with healthcare professionals.
Written user reviews are not shown here. Check current App Store reviews >
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.