App Overview

My Jump 2 icon

My Jump 2

Carlos Balsalobre · Sports

*****Designed by sport scientists

$17.99 · In-app purchases

PRICE
$17.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.6
192 ratings · Top 15%

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 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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> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for My Jump 2: 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 more detailed analytics and visualizations.

Assumption to check: Users find it difficult to track long-term progress effectively.

Validate with people who use this workflow before building.

Hypothesis 2

Add options to share achievements on social media.

Assumption to check: Limited social sharing features

Validate with people who use this workflow before building.

Hypothesis 3

Enhance the accuracy of height measurement.

Assumption to check: Some users report bugs with jump height recording

Validate with people who use this workflow before building.

Hypothesis 4

Introduce a freemium model with basic features for free.

Assumption to check: The price is considered high for some 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

*****Designed by sport scientists. Validation published on the Journal of Strength & Conditioning Research and Journal of Sports Sciences***** ***Featured by Apple under ‘Best New Apps’ in 100+ countries*** ***The only app which calculates the force-velocity profile using the groundbreaking Samozino’s method*** My Jump 2 is the first app scientifically developed to measure your jump height. With a great design and validated by sport scientists, My Jump 2 is as reliable as a 10000$ force platform. Scientifically probed! ------------------------------ Pierre Samozino (PhD, sport scientist, University of Savoy): “My Jump 2 makes possible the determination of the jump height with a high accuracy, which has been validated in very recent scientific study. The other, and I think the main added value of this app is to propose the determination of the Force-Velocity-Power profile of each athlete and its own imbalance between force and velocity qualities. Very useful to optimize your strength training and improve your explosive performances.” Jean-Benoit Morin (PhD, sport scientist, University of Nice): “My Jump 2 is the cutting edge, scientifically validated and most practical application to measure athletes vertical jumping performance, and the only one to include the complete "Optimal Force-Velocity Profile" analysis we recently validated. I'm using it with athletes, students, and research subjects. The entire Jumping Force-Velocity-Power and Optimal F-V Profile approach in your pocket!” ------------------------------ My Jump 2 gives you advanced information of your jumps using the camera on your iPhone, iPod touch or iPad. Just record a jump, select accurately its take off and landing and lets My Jump do its magic. My Jump 2 calculates the height, flight time, velocity, force and power of your vertical jumps. Also, it gives you the contact time, vertical stiffness and reactive strength index (RSI) of your Drop Jumps. Moreover, it allows you to calculate your Force-Velocity profile using Samozino's method. Complete analysis of your jumps right on your hand! FEATURES: • Accurate measurement of your vertical jumps. Scientifically demonstrated! • Calculate the force-velocity profile using the groundbreaking Samozino’s method. You can know your maximal theoretical force, velocity, power and how far you are from your optimal capabilities! You can even get information about which quality (force or velocity) you should work to increase your explosive performance. • Record stunnig slowmo videos up to 240fps or import as much as you like from your camera roll. • Different jump types: countermovement jump (CMJ), squat jump (SJ), drop jump (DJ), CMJ free arms, horizontal jumps and repeated jump test! • Annotate the external load used (CMJ & SJ) or the height of the box (DJ) to organize your best performances in different categories. • Multi-user. My Jump 2 allows you to create as many users as you want. Monitor all your team on your iDevice! • iCloud sync (iOS 13+) • History. Record as many jumps as you want for each user created. With My Jump 2 you can analyze the evolution of your performance during time. You can even observe exactly how much you have improved! • Export your data to Excel, Numbers, Google Drive and more! • Beautiful, intuitive like design. • Universal app: purchase once and install it on your iPhone, iPad and Mac (10.15+) Note: My Jump 2 works better with slow-motion videos. MY JUMP 2, A JUMP PLATFORM RIGHT ON YOUR HAND!

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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.