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.
Between games, there’s a quiet moment, a changeover, when you actually think about what just happened
$0.99
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 Changeover Journal: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Between games, there’s a quiet moment, a changeover, when you actually think about what just happened. Changeover is that moment, kept. A tennis journal for players who care about the story of their game, not a wall of charts. Log a match, a practice, or a hit while it’s still fresh: the score, how it felt, what clicked, what to try next time. Put this weekend’s match on the schedule too. Over weeks, those notes become something you can actually learn from. See your week at a glance. Come back to old matches when a pattern starts to nag at you. Type an opponent you’ve played before and the last thing you wrote about them comes right back. Keep your rackets, shoes, and strings in the bag, setups and tensions included, so the journal remembers what you were using and how many hours are on that string bed. Watch your streak, your competition record, and the themes that keep showing up in your own words. Turn a good session or a good month into something worth posting: a clean card, or a transparent sticker to drop over a photo in your story. When you want a sharper read, optional Changeover AI sits with your history: insights, Ask Changeover, practice ideas, and match reflection drawn from what you logged, not generic tips from the internet. Your journal lives on your phone. No account. No feed. Reminders are opt-in and stay on your device. Changeover AI is an optional yearly subscription if you want the added coach that remembers. Remember what happened. Learn from it. Play better next time. Terms of Use: https://trevornogues.github.io/changeover-public-pages/terms/ Privacy Policy: https://trevornogues.github.io/changeover-public-pages/privacy/
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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 sports tracking options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Basic analytics features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social sharing options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No offline functionality
Validate with people who use this workflow before building.
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.