App Overview

Cadence Running Metronome icon

Cadence Running Metronome

Kelly King · Health & Fitness

Cadence is a running metronome that does one thing and does it well

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
3 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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A product spec, screen plans, and build steps for your coding agent.

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What's included16 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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> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for Cadence Running Metronome: map the core Health & Fitness 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 customizable workout plans and detailed metrics.

Assumption to check: Limited functionality for advanced users

Validate with people who use this workflow before building.

Hypothesis 2

Add challenges and sharing options.

Assumption to check: No social features or community engagement

Validate with people who use this workflow before building.

Hypothesis 3

Implement different sound profiles and volume control.

Assumption to check: Limited audio feedback options

Validate with people who use this workflow before building.

Hypothesis 4

Enhance visual elements and animations for a modern feel.

Assumption to check: Basic UI design

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 running metronome that does one thing and does it well. Set your beats per minute, choose a sound, and go. The beat plays underneath your podcast, audiobook, or music — not instead of it. Consistent cadence is the fastest route to better running. It builds efficiency, improves performance, and takes the guesswork out of easy gains. SET YOUR CADENCE FOR ANY SESSION Zone 2 easy run? Set it low — 160–165 BPM — and lock in a steady, sustainable rhythm you can hold for an hour without drifting. Tempo or threshold run? Push it to 170–175 and train your body to sustain a faster turnover at controlled effort. Race pace? Dial in your target cadence and practise holding it. Come race day, the rhythm is already in your legs. Strides and speed work? Crank it up to 185–195 and match your feet to the beat. Cadence teaches fast turnover as a physical habit, not a number on a watch. Recovery or cool-down? Drop it low and let the beat slow you down. Runners almost always recover too fast. The metronome won't let you. WHY CADENCE Cadence metronome takes the guesswork out of pace. No need to keep looking at your wrist - set the cadence, choose a sound, and let your feet find the beat. A metronome trains rhythm at a muscular level — your legs learn the pattern and hold it without conscious effort. This is how consistent pacing is built. PLAYS BENEATH YOUR AUDIO Cadence generates sound on a separate audio channel, so it plays beneath your chosen podcast, audiobook, or playlist. Train your cadence while listening to whatever keeps you moving. THE DETAILS Three clean synthesised sounds: Click, Woodblock, and Soft Beep. Pick whichever cuts through without being annoying. BPM range of 150–200 — from easy recovery pace through fast strides. Adjustable by slider or single-tap increments. Tap Tempo: tap in rhythm with your current footstrike and the app locks to your cadence. Find out what you're running at before you decide what to aim for. Volume control to dial the beat beneath speech audio or push it forward when you need a stronger cue. Elapsed timer so you can leave your other apps alone. Screen wake lock keeps your phone awake during your run. No GPS. No battery drain. No account. No sign-up. No internet connection required — works in flight mode, underground, on a treadmill, wherever you run. One app. One job. Run to the beat.

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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.