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.
Have you ever wondered when you last did something?
$5.99 · 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 Last Time Tracker: map the core Lifestyle 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: User interface can feel cluttered with too much information.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited ability to customize activities or set reminders.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No social sharing features to compare activities with friends.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchases can be confusing for 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.
Have you ever wondered when you last did something? Your last vacation, your last call to your parents, or the last time you changed your toothbrush. Last Time makes tracking things easy and enjoyable, so you won't forget what matters to you. Tracking ideas: - Last time you watched that movie. - Last time you hung out with your friends. - Last time you visited your parents. - Last time you played with your children. - Last time you saw the dentist. - Last time you read a good book. Not just the good things — you can also track what you want to quit or cut down on, like smoking or running late. The only limit is your imagination. You will find you manage your time better just by knowing when you last did something. Features: - Event tracking: see how long it has been since the last time, counted in days. - One tap to log: mark something done from the list, with a note or on a date you choose. - Your own icons: give every event a symbol from the full SF Symbols library, in the color you pick. - Grouped by due date: Overdue, This Week and Later, worked out from how often you actually do each thing. - History: every entry in order, with the gap between them, your average, and when the next one is due. - Morning Digest: one notification a day, and only when there is something worth saying. - App Lock: keep your events behind Face ID, Touch ID or your device passcode. - iCloud sync: your events on all your devices. - Shortcuts and Siri: mark an event done, or ask when you last did something. - Export: take everything with you as a CSV. - Light and dark: follow the system, or pick one. - iPhone and iPad.
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.