App Overview

15 Minutes: Time Tracker icon

15 Minutes: Time Tracker

Devpool · Productivity

Where did your day go? 15 Minutes answers with one simple habit: every 15 minutes, a reminder asks what you're doing, and you jot it down in a few words

$3.99 · In-app purchases

PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.4
8 ratings · Top 30%

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.

Build your own version

Build Kit

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included17 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
Preview a sample Build Kit No email needed

Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

Screen plan

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.

Differentiate and validate

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.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for 15 Minutes: Time 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.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

< Scroll to see more >
App Store description

Where did your day go? 15 Minutes answers with one simple habit: every 15 minutes, a reminder asks what you're doing, and you jot it down in a few words. Reply right from the notification, without even opening the app. At the end of the day, you see exactly how you spent your time, slot by slot. HOW IT WORKS • Your day is split into 15-minute slots, from the hour you wake up to the hour you go to bed • A reminder every 15 minutes, with a choice of sounds • Reply right from the notification to log your activity in seconds • Smart suggestions from your task history: one tap and it's logged • Forgot a few slots? Quick Add fills in a whole day in a minute FOCUS MODE • Work in 15-minute sprints with a full-screen countdown ring • The screen stays awake while you focus • When the sprint ends, log what you did and the next one starts on its own DAILY GOALS • Set your 3 goals for the day each morning • They stay in sight all day long • See how yesterday went before you start SEE WHERE YOUR TIME GOES • Day summary with a time breakdown chart • Smart categories by on-device AI (Apple Intelligence): work, health, learning, social and more • Productivity score with a short insight about your day • Completion rate, total time and unique tasks • Current and longest streaks, best day and records • Activity by hour of day and by weekday YOUR DATA, YOUR WAY • Export your history as CSV, JSON or PDF, by week, month or all time • iCloud sync across iPhone, iPad and Apple Vision Pro • Day Off mode pauses reminders when you rest • 8 color themes: Sunrise, Ocean, Forest, Lavender, Midnight, Coral, Mint and Gold MADE FOR IPHONE, IPAD AND IPHONE DUO • On iPad and the inner display of iPhone Duo, your timer, goals and day sit side by side • Fold iPhone Duo like a laptop: the timer on top, your day below • Clean, simple interface in English, French and Spanish WHY 15 MINUTES 15 minutes is the sweet spot: short enough to catch every change of activity, long enough not to get in your way. Perfect for professionals who want to understand their productivity, freelancers who bill by the hour, students planning their study sessions, and anyone who wants to stop wondering where the day went. Free, no ads, no account. Your data stays in your iCloud.

Written user reviews are not shown here. Check current App Store reviews >

Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

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

Allow users to set custom timer durations and labels

Assumption to check: Lack of customization options for timers

Validate with people who use this workflow before building.

Hypothesis 2

Add push notifications for completed tasks

Assumption to check: No reminders for completed timers

Validate with people who use this workflow before building.

Hypothesis 3

Enable detailed history with analytics on time spent

Assumption to check: Limited history tracking

Validate with people who use this workflow before building.

Hypothesis 4

Implement calendar sync to keep users informed of their schedule

Assumption to check: No integration with calendar apps

Validate with people who use this workflow before building.

Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Zustand
react-navigation
expo-sqlite
react-native-reanimated
BUILD KIT DIFFICULTY
Starter

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.