App Overview

Multi HR icon

Multi HR

Wuhan Newrathon Technology Co., Ltd. · Sports

Multi HR is a professional multi-device heart rate monitoring app that supports connecting and recording data from multiple Bluetooth heart rate devices simultaneously.

$9.99 · In-app purchases

PRICE
$9.99
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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A product spec, screen plans, and build steps for your coding agent.

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What's included15 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 Multi HR: map the core Sports 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

Implement advanced analytics and visualizations for user data.

Assumption to check: Limited analytics options for users to track performance over time.

Validate with people who use this workflow before building.

Hypothesis 2

Provide integration options for a wider range of heart rate monitor devices.

Assumption to check: The app may not support all heart rate monitors.

Validate with people who use this workflow before building.

Hypothesis 3

Introduce social features to share achievements and workouts with friends.

Assumption to check: Lack of community features for users to connect.

Validate with people who use this workflow before building.

Hypothesis 4

Create a clearer subscription model with trial and educational content.

Assumption to check: In-app purchases can be confusing for 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

Multi HR is a professional multi-device heart rate monitoring app that supports connecting and recording data from multiple Bluetooth heart rate devices simultaneously. Medical Disclaimer: This application is intended for heart rate data collection and analysis purposes only and is not a substitute for professional medical diagnosis and advice. Please consult your physician or other qualified healthcare provider before making any health-related decisions. The data and analysis results provided by this application are for reference only and should not be used for self-diagnosis, treatment, or prevention of any medical condition. If you experience any discomfort or have concerns about your health condition, please seek immediate medical attention. The use of this application is at the user's own risk. We recommend discussing the use of this application with your healthcare provider to determine if it is appropriate for your specific situation. Compatible Devices: • COROS heart rate monitors • Garmin heart rate monitors • Polar heart rate monitors • Other Bluetooth heart rate monitors that support standard Bluetooth Low Energy Heart Rate Service (0x180D) Key Features: • Connect multiple Bluetooth heart rate devices at once • Display real-time heart rate data and battery status for each device • Intuitive real-time heart rate charts • Export detailed heart rate records in Excel and CSV formats • View detailed device information Use Cases: • Heart rate monitoring during training • Synchronized recording for multiple users • Comparative testing of heart rate devices • Data collection for heart rate research Important Notes: • Requires devices with Bluetooth 4.0 or higher • Ensure Bluetooth is enabled during use • This app is for general health management and not for medical diagnosis Privacy Protection: • All data is stored locally • No personal information is collected • No account registration required For any questions or suggestions, feel free to contact our support team.

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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
Advanced

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.