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.
15 Minutes transforms your time management by prompting you to note what you are doing every 15 minutes
$3.99 · 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 15 Minutes - Timer Tracker: map the core Productivity 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: Lack of customization options for timers
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No reminders for completed timers
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited history tracking
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No integration with calendar apps
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.
15 Minutes transforms your time management by prompting you to note what you are doing every 15 minutes. A simple and effective method to become aware of how you actually spend your time. HOW IT WORKS Your day is divided into 15-minute slots. At each interval, a notification reminds you to note your current activity. In just a few words, you document what you have accomplished. Reply directly from the notification without even opening the app. FOCUS MODE Turn on Focus Mode and work in 15-minute sprints. A beautiful countdown ring shows the time remaining in the current slot, your screen stays awake while you work, and when the 15 minutes are up, the app asks you what you did and starts the next session automatically. Focus, log it, go again. DAILY GOALS Start every morning by setting your 3 goals for the day. They stay visible at the bottom of your screen all day long, and you can review how yesterday went before setting today's intentions. STATS AND INSIGHTS - Day summary with time breakdown charts - Completion rate, unique tasks and total time tracked - Current and longest streaks - Activity by hour of day and by weekday - Your most frequent tasks over the week, month, or all time FEATURES - Configurable 15-minute time slots based on your schedule - Automatic reminders via notifications, with a choice of sounds - Reply to notifications to log your activity instantly - Focus Mode with 15-minute sprints and always-on screen option - 3 daily goals with a morning check-in - iCloud sync: your data follows you across iPhone, iPad and Apple Vision Pro - Weekly view to navigate between days - Daily progress indicators and streaks - Quick Add to fill a whole day in seconds - Day Off mode to pause reminders when you rest - Smart suggestions based on your task history - 8 color themes to make the app yours - Customizable start and end times for your day - Clean and intuitive interface - Available in English, French and Spanish WHO IS IT FOR This app is suitable for professionals wanting to analyze their productivity, freelancers who bill by time spent, students looking to optimize their study sessions, or anyone seeking to better understand how they use their time. WHY 15 MINUTES 15-minute intervals offer an ideal balance between precision and practicality. Short enough to capture activity changes, long enough not to be intrusive. Download 15Minutes and start mastering your time today.
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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.