Return to play with confidence

Get accurate jump metrics anywhere with the biomechanics lab you're already wearing.

Vertical jump height, normalized peak power at takeoff in W/kg, takeoff velocity in m/s, normalized peak force in N/kg, number of countermovement jumps or squat jumps, flight time in ms.

800 Hz

sampling

Fast motion capture

±0.5" vertical

±6" horizontal

Lab-grade accuracy

300+

jump sessions recorded

Consistent results

"Countermovement jump and squat jump are the most reliable and valid field tests for the estimation of explosive power of the lower limbs"
Markovic 2004. J. Strength Cond. Res.


"The Jumpable app provides the convenience and ease of use that conventional jump measurement devices do not. The user/athlete can benefit greatly from the consistency and frequency over any period of time in an athletic or return to play situation and most importantly, it saves time! I would recommend anyone interested in this to give it a try."


Kevin Hirose
Strength & Conditioning Coach, Kinesiologist
CSCS, BKin

"Finally, I've always wondered why this didn't exist already."


Pro Dunker


Step up your game with accuracy

Jumpable™ brings you everything you need to measure, manage, and improve your explosive capability.

Triple Hop

Standing Long Jump

Countermovement Jumps

Jump Detection

 

✓ Vertical and horizontal jump detection✓ Toggle total horizontal distance✓ Tag left / right / both legs

Time Metrics

 

✓ Flight time✓ Contact time✓ Reactive Strength Index (RSI)

Efficiency Metrics

 

✓ Launch angle✓ Power, velocity, force, and RFD✓ Toggle takeoff and landing metrics


Take flight in seconds

Our patent-pending ankle placement algorithms transform your Apple Watch into a precision jump lab.

Strap

Secure Apple Watch to your inner ankle.

Tap

Set a recording duration, tap play, and jump!

Recap

Instantly review results, track progress, and optimize your training.


"A young athlete who returns to sport after ACLR may be at a 30 to 40 times greater risk of ACL injury. Activity modification, improved rehabilitation and return-to-play guidelines, and the use of integrative neuromuscular training may help athletes more safely reintegrate into sport and reduce second injury."
Wiggins 2016. Am J. Sports Med.

Remove the guesswork

Get back to your sport safely with the objective evidence needed to optimize recovery.

Assess your technique

Share stats with your coach or clinician, and export CSV data with power, velocity, force, and RFD curves directly from your Apple Watch.

The Jumpable App screen indicates a pre-injury baseline, followed by recovery milestones over a few months as a result of timely load progression in preparation for return to sport.

Progress, quantified

Evidence-backed insights to guide your return to play

Pre-injury Baseline

Find out what your 100% looks like.


Recovery Milestones

Measure your progress with data.


Load Progression

Add intensity at the right time.


Left vs. Right Asymmetry

Identify and address hidden weakness.


Return-to-Sport Confidence

Step back on the field with evidence.


Reduced Re-injury Risk

Catch performance drops before they
become a risk of re-injury.

"Vertical jump tests are more sensitive in revealing asymmetries in performance metrics at the time of return to sport after ACL reconstruction"
Kotsifaki 2023. Br J. Sports Med.


Pricing

Lab-grade tools without the pricetag

Pro

$199

/year

✓ Vertical and horizontal jump metrics✓ Peak power, velocity, force, RFD✓ Progress charts✓ Jump summary sharing

Elite

$299

/year

✓ All Pro features✓ Timestamped CSV data export✓ Power, velocity, force, RFD curves✓ 3DOF shank rotation curves


Frequently Asked Questions


Try Jumpable™ free today

Track every jump. See progress. Perform better.

© 2025 Callosum AI Inc.
All rights reserved.

We take privacy seriously

Data is computed and securely stored on your device, ensuring you're always in control.

Privacy Policy

Last Updated: June 18, 2025
Effective: June 18, 2025

Table of Contents1. Introduction
2. Information We Collect
3. How We Use Information
4. Data Storage and Security
5. Your Rights and Choices
6. Third-Party Services
7. Changes to This Policy
8. Contact Information

1. IntroductionThank you for using Jumpable™. This Privacy Policy describes how Callosum AI Inc. ("we," "our," or "us") collects, uses, and protects information when you use Jumpable™ (the "App") and related services.We are committed to protecting your privacy and ensuring transparency about our data practices. This policy explains what information we collect, how we use it, and your rights regarding your personal information. We encourage you to read this document carefully.

2. Information We Collect2.1 Personal Information
We do not collect any personal information that can identify you. The App does not require account creation, email addresses, names, or any other personally identifiable information.
2.2 Motion Sensor Data
The App collects anonymized motion sensor data from your Apple Watch, including:
• Accelerometer and Gyroscope readings during jump measurements
• Timestamp information for data processing
Important: This motion sensor data is:
✓ Completely anonymized and cannot be linked to your identity
✓ Used solely to improve our measurement algorithms
✓ Processed in aggregate with other users' data
✓ Never combined with any identifying information
2.3 Data We Do NOT Collect
We do not collect, access, or store:
• Personal identifying information (name, email, phone number)
• Location data or GPS coordinates
• Health records or medical information
• Contact lists or device identifiers
• Browsing history or app usage patterns
• Any data that could identify you personally

3. How We Use Information3.1 Algorithm Improvement
The anonymized motion sensor data is used exclusively to:
• Improve the accuracy of our jump measurement calculations
• Enhance the performance of our biomechanical algorithms
• Validate and refine our motion analysis techniques
• Develop better measurement methodologies
3.2 What We Don't Do
We do not:
• Track individual users or create user profiles
• Sell, rent, or share data with third parties for marketing
• Use data for advertising or commercial purposes beyond app improvement
• Combine motion data with any identifying information
• Create behavioral profiles or user analytics

4. Data Storage and Security4.1 On-Device Processing
All jump measurements and personal performance data remain on your Apple Watch and iPhone. We do not store your individual jump results, performance metrics, or personal training data on our servers.
4.2 Anonymized Data Security
The limited anonymized motion sensor data we collect is:
• Encrypted during transmission and storage
• Stored on secure servers with industry-standard protections
• Accessible only to authorized personnel for algorithm development
• Retained only as long as necessary for improvement purposes
• Automatically aggregated to prevent any potential identification
4.3 Data Retention
• Your personal jump data: Stored only on your devices, under your control
• Anonymized motion patterns: Retained for algorithm improvement, typically 2-3 years
• Aggregate data: May be retained longer for ongoing research and development

5. Your Rights and Choices5.1 Control Over Your Data
• All your personal jump measurements remain on your devices
• You can delete the App and all associated data at any time
• No account deletion needed since no accounts are created
5.2 Opting Out
Since we only collect anonymized, non-identifying motion patterns, there are no personal data collection settings to modify. If you prefer not to contribute any data to algorithm improvement, you can contact us to discuss technical alternatives.
5.3 Data Portability
Your jump measurements and performance data are stored locally on your devices and can be exported through standard Apple sharing mechanisms.

6. Third-Party Services6.1 Apple Frameworks
The App uses Apple's Core Motion framework to access sensor data. This usage is governed by Apple's privacy policies and your device settings.
6.2 No Third-Party Analytics
We do not use third-party analytics services, advertising networks, or tracking tools that would collect additional data about you.
6.3 Children's Privacy
The App does not knowingly collect any information from children under 13 years of age. The App is designed for general fitness use and does not target children specifically.
6.4 International Users
If you are located outside the United States, please note that the anonymized motion data may be transferred to and processed in the United States, where our servers are located.

7. Changes to This PolicyWe may update this Privacy Policy from time to time to reflect changes in our practices or for legal compliance. We will notify users of any material changes by:
• Updating the "Last Updated" date at the top of this policy
• Providing notice through the App if changes significantly affect data practices

8. Contact InformationIf you have questions about this Privacy Policy or our data practices, please contact us at [email protected].Legal Compliance
This Privacy Policy is designed to comply with applicable privacy laws, including:
• California Consumer Privacy Act (CCPA)
• General Data Protection Regulation (GDPR) for EU users
• Children's Online Privacy Protection Act (COPPA)
• Other applicable state and federal privacy laws.
Summary
We respect your privacy. We only collect anonymized jump motion data to improve our algorithms - no personal information, no tracking, no advertising. Your jump data stays on your devices, under your control.

© 2025 Callosum AI Inc.
All rights reserved.

Terms of Service

DISCLAIMER AND LIMITATION OF LIABILITY:
This application is provided for informational, fitness, and athletic training purposes only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of qualified healthcare providers regarding any medical conditions or before beginning any exercise program.
USER ASSUMES ALL RISKS:
By using this app, you acknowledge and assume all risks associated with physical activity, including but not limited to the risk of injury, property damage, or death. You agree to use this app at your own risk and discretion.
EQUIPMENT SAFETY:
Users are solely responsible for ensuring proper and secure attachment of their Apple Watch during all activities. Failure to properly secure the device may result in device damage, personal injury, or injury to others.
ACCURACY LIMITATIONS:
While this app employs advanced sensor technology and computational algorithms, all measurements are estimates intended for general fitness and athletic training purposes. Accuracy may be affected by device positioning, environmental conditions, user technique, and equipment variations.
NO WARRANTY:
This app is provided "as is" without warranty of any kind. We disclaim all warranties, express or implied, including but not limited to accuracy, reliability, or fitness for a particular purpose.
LIMITATION OF LIABILITY:
To the maximum extent permitted by law, we shall not be liable for any direct, indirect, incidental, special, or consequential damages arising from use of this app.
By downloading, installing, or using this app, you acknowledge that you have read, understood, and agree to be bound by this disclaimer.

© 2025 Callosum AI Inc.
All rights reserved.

We'd love to hear from you

Got questions, ideas or feedback about Jumpable™? We're all ears.

© 2025 Callosum AI Inc.
All rights reserved.