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.
Fit-Stitch is a simple fitness tracking app for people who want to visually monitor their progress
$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 Fit-Stitch Progress Tracker: 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 social features for sharing progress
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of personalized workout recommendations
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No integration with wearable devices
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Subscription model may deter 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.
Fit-Stitch is a simple fitness tracking app for people who want to visually monitor their progress. It allows you to track subtle changes to your body that the scale might miss: - Track your weight and visual changes to your body over time, capturing the subtle transformations that traditional metrics might miss (e.g., losing fat and gaining muscle). - Combine weight logging (quantitative) with progress photos (qualitative), so you can see the full picture of your fitness progress. - Fit-Stitch is an offline-first app, meaning your photos and data remain on your device and only your device. We don't have ads, and we don't engage in creepy data tracking. - Stay committed with the reminder feature, ensuring you consistently track your progress and stay motivated. - Optionally, back up your data to your own, private, secure iCloud account for easy restoration on another device. - Effortlessly create beautiful before & after comparisons to discover changes for yourself or showcase your fitness transformation. - Tracking your progress increases the success rate of fitness training, helping you stay on track and achieve better results. - Fit-Stitch is built by a two independent developers, not a giant company. We're quick to respond and we're here to help. If you have problems or feature requests, we'd love to chat. - Fit-Stitch is designed for those who value data-driven insights and want to take control of their fitness journey. Download Fit-Stitch and start tracking your fitness progress.
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.