App Overview

YO YO Endurance Test icon

YO YO Endurance Test

BIT AND WEB · Sports

The 'YO YO Endurance Test' provides an important instrument for determining the level of physical efficiency of an athlete.

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

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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What's included18 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 YO YO Endurance Test: 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

Add social sharing and challenges to improve user interaction.

Assumption to check: Limited user engagement features compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Provide advanced metrics and progress tracking.

Assumption to check: Lack of detailed performance analytics

Validate with people who use this workflow before building.

Hypothesis 3

Enable syncing with fitness trackers for better data accuracy.

Assumption to check: No integration with wearable devices

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to customize test settings and notifications.

Assumption to check: Minimal customization options

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

The 'YO YO Endurance Test' provides an important instrument for determining the level of physical efficiency of an athlete. The physical capacity is evaluated quickly and easily by placing two cones spaced 20 meters each other. The athlete has to run at full speed from one cone to another and then return again on the first cone. This path must be repeated for six times without any break, and get the split times every time the athlete passes on the first cone. This application will track all the split time and at the end will be calculated two parameters that determine the outcome of the test. More these values are low and better will be the athlete's performance. Basically the final result is given by a mathematical formula that processes the delta between the averages of the last two split times and the first two split times and thereby the athlete's ability to maintain its maximum speed for a certain period of time. The second value obtained on completion of the test, is the first result considering also the total time of the test. The 'YO YO Endurance Test' can be used to determine the level of athletic in all sports (football, running, basketball, volleyball, cycling, tennis etc.) At the end of the test you can get for each athlete the final result (eg. "Above average" or "Poor") and the Vo2Max estimate You can manage more Athletes and save personal data and notes. You can analyze test results. Automatic Sync between devices thanks to iCloud Info section where you can better understand how prepare the test and you can visit linked website and video where get more info about YO-YO Endurance Test If you find this application useful, please give a positive review in the AppStore, so we can further improve and develop new options. For any further information, please send an email to: [email protected] Thanks

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Screenshots

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Build scope

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Define the first version

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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
Intermediate

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.