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.
Highly versatile fitness testing and performance evaluation - getting fit has never been easier!
$1.99 · 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 FitnessMeter - Test & Measure: map the core Sports 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 test variety and metrics tracking
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: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inconsistent data visualization
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.
Highly versatile fitness testing and performance evaluation - getting fit has never been easier! FitnessMeter is an advanced timing and measurement tool, useful for various forms of fitness testing. Aimed at both coaches evaluating multiple athletes and individuals monitoring their performance, the app can be applied to a variety of different tests to measure speed, agility, jumping altitude and overall physical condition. FitnessMeter includes the following tools: Flying Sprint Using the camera view, FitnessMeter measures the top speed or acceleration of a sprinter over a predetermined distance of 10-20 m. Two red lines, functioning as timing gates, aid in identifying the points between which running time is measured. Sprint and Shuttle This mode can be applied to both sprints and agility tests. The app functions as a starting gun and a timing gate, and can be configured to handle several different types of tests, from conventional sprint to more complex drills, such as the 505 Agility test. Vertical Jump FitnessMeter records a short video that allows you to easily measure the height of a jump. If you are evaluating your performance, put the iPhone in your pocket and use the accelerometer tool instead. Repetitions FitnessMeter can count and time various repetitive activities such as sit-ups, push-ups, step-ups, etc. The iPhone can be placed beside you, using the camera to track repetitions using motion detection, or attached to yourself to allow monitoring through the accelerometer. Beep Test A configurable Beep Test that saves an image after each lap, which makes it easy to keep track of results, even for a large group of runners. See the demo video at the support url appmaker.se/fitnessMeter "A serious must have" thepegeek.com "FitnessMeter is an awesome tool" greatist.com/fitness/strength-training-iphone-apps "Super cool app that measures a whole bunch of fitness related exercises." physedreview.weebly.com
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.