App Overview

Cadence - Habit Tracker icon

Cadence - Habit Tracker

Hyundoh Kim · Productivity

Cadence is a calm, strictly private habit tracker with no subscriptions (ever) that helps you focus on your daily progress

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
2 ratings · Top 5%

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.

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Build Kit

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

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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/
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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.

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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 Cadence - Habit 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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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

Include detailed statistics on habit performance over time.

Assumption to check: Lack of advanced habit tracking features like analytics

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to customize colors, icons, and reminders.

Assumption to check: Limited customization options for habits

Validate with people who use this workflow before building.

Hypothesis 3

Enable users to share their progress with friends.

Assumption to check: No social sharing capabilities

Validate with people who use this workflow before building.

Hypothesis 4

Offer more value in free tier to improve user acquisition.

Assumption to check: Monetization model may deter users

Validate with people who use this workflow before building.

App evidence

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

App Store description

Cadence is a calm, strictly private habit tracker with no subscriptions (ever) that helps you focus on your daily progress. No cluttered interfaces and no account signups. Whether you want to build a positive routine or break a bad one, Cadence gives you the clarity to actually stick to it. TRACK IT YOUR WAY - Target Goals: Set "at least" goals to build up or "at most" limits to cut back. - Simple Habits: Track "yes or no" routines like reading or meditating. - Any Schedule: Every day, specific weekdays, 3 times a week, 5 times a day, every other day - if it fits your life, Cadence can track it. - Skip Days: Mark a day as "not applicable" without breaking your streak. Life happens. SEE THE FULL PICTURE - Overview: Your new home base - a redesigned tab that visualizes all your habits and progress at a glance. - The Visual Grid: View your long-term consistency on a beautifully color-coded calendar heat map. - Habit Details: A refined details page with streaks, personal bests, and completion rates across weeks, months, and years. - Momentum Rings: Instantly gauge your 30-day rolling performance directly from your habit list. ON YOUR WRIST & HOME SCREEN - Apple Watch: Log habits and check your progress right from your wrist - no phone needed. - Widgets: Keep a single habit front and center with the new small widget, or track your day at a glance. STAY ON TRACK - Actionable Alerts: Log a habit as "Done" or "Skip" directly from your lock screen without opening the app. - Smart Reminders: Set custom notification times for each habit so you're nudged at the right moment. - Daily Notes: Attach context to any entry (like noting the weather for a run). - Adaptive Theming: Full support for Light and Dark modes with a carefully curated 28-color palette. YOUR DATA, YOUR BUSINESS Cadence has no analytics, no tracking SDKs, and no cloud tracking. Your data lives locally on your device. Works on iPhone, iPad, and Apple Watch. FREE VS. PRO Use Cadence completely free for up to 4 active habits. Need more? A single $3.99 one-time purchase unlocks Cadence Pro: - Unlimited active habits - Private iCloud sync across devices - CSV data export and import - Widgets - Watch app No subscriptions. No auto-renewals. Pay once, own it forever. Features added since initial release: - Watch app - Single habit widget - Improved overview page + animations Thank you so much for your support!

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Screenshots

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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.

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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.