MaxSprint is a sprint training app for iPhone and Apple Watch designed to help athletes plan, execute and analyse sprint training.
MaxSprint includes flexible workout building, individualised target times, audio pacing, live workout guidance, sprint performance analysis, readiness monitoring and support for compatible timing-gate data.
Depending on the features you use and the permissions you grant, MaxSprint may use information from Apple Health together with your locally stored training history to provide readiness and recovery information.
For questions, bug reports, privacy questions or technical support, contact:
maxsprintapp@gmail.com
When reporting an issue, please include:
Your iPhone model
Your Apple Watch model, if applicable
Your iOS and watchOS versions
The MaxSprint app version
A brief description of what happened
The workout or feature you were using when the issue occurred
Please do not send sensitive health information unless it is necessary to explain the issue.
If MaxSprint is not working as expected:
Close MaxSprint completely and reopen it.
Ensure Bluetooth is enabled when using Apple Watch or compatible timing hardware.
Make sure your Apple Watch is connected to your iPhone and that MaxSprint is installed on both devices.
Ensure MaxSprint has the permissions required for the features you are using.
This may include:
Apple Health permissions
Bluetooth permission
Notification permission
Motion or fitness-related permissions where applicable
Permissions can be reviewed through your iPhone Settings and Apple Health settings.
If an issue continues, restart your iPhone and Apple Watch before trying again.
Ensure compatible timing hardware is:
Powered on
Within Bluetooth range
Configured correctly
Operating before the workout begins
If timing information is still not appearing, close and reopen MaxSprint and reconnect the timing hardware.
If the problem continues, contact MaxSprint Support with details of the issue.
MaxSprint may use Apple Health information to support workout analysis and training readiness functionality.
Depending on the permissions you grant and the information available on your device, this may include:
Sleep duration
Heart rate
Resting heart rate, including suitable measurements taken before waking where available
Heartbeat-series or beat-to-beat interval information
Workout information
Distance
Energy expenditure
MaxSprint may use heartbeat-series information to calculate heart rate variability measures such as RMSSD and LnRMSSD locally on your device.
MaxSprint may combine this information with locally stored MaxSprint data such as:
Recent training history
Training volume
Rep intensity
Workout type
Sprint performance
Performance relative to previous sessions or targets
Previous readiness records
Optional readiness questionnaire responses
Optional countermovement jump (CMJ) results
This information is used to provide training and recovery context within MaxSprint.
Readiness calculations and related analysis are performed on-device.
MaxSprint does not operate an external server for storing your HealthKit information, readiness questionnaire responses, CMJ results, heartbeat-series information or readiness history.
You remain in control of the Apple Health information MaxSprint can access.
You can review or withdraw Health permissions at any time through the Apple Health app or your device's Health and privacy settings.
On current versions of iOS, this can generally be reviewed through:
Health app → Profile → Apps and Services → MaxSprint
or through the relevant Health and privacy settings in Settings.
The exact menu wording may vary depending on your version of iOS.
You can enable or disable individual Health categories.
Withdrawing a permission prevents MaxSprint from accessing that Health category in the future.
Changing Health permissions does not necessarily delete information previously stored separately within MaxSprint or within Apple Health.
If readiness information is unavailable or incomplete:
Confirm that MaxSprint has permission to read the Health information required for the readiness features you want to use.
MaxSprint can only analyse information that exists in Apple Health and that you have permitted the app to access.
For example, some readiness measures may not be available if your Apple Watch has not recorded suitable sleep, resting heart rate or heartbeat-series information.
Some readiness analysis may become more useful once MaxSprint has sufficient recent training and physiological history to compare your current measurements with your own normal values.
Readiness questionnaire responses and CMJ results are optional.
MaxSprint can continue to provide other functionality without these measures, although the available readiness analysis may differ depending on the information provided.
MaxSprint provides training and performance information, not medical advice.
Readiness scores, recovery information, heart rate variability analysis, training suggestions and performance estimates are intended to help provide context for sprint training.
They are not intended to diagnose illness, injury or any medical condition.
MaxSprint is not a substitute for assessment or advice from a qualified healthcare professional.
If you have symptoms, health concerns or uncertainty about whether it is appropriate to train, seek appropriate medical advice rather than relying solely on MaxSprint readiness information.
MaxSprint can operate with Apple Watch to provide guided workouts and other training functionality.
Workout and training information may be communicated between your paired iPhone and Apple Watch using Apple-provided system frameworks.
If Apple Watch functionality is not working correctly:
Confirm MaxSprint is installed on both devices
Confirm the Watch is connected to the iPhone
Open MaxSprint on both devices
Check Bluetooth
Restart both devices if necessary
For timing-gate workflows that support direct Apple Watch operation, ensure Bluetooth and the relevant timing settings are enabled on the Watch before beginning the workout.
MaxSprint can capture compatible timing data from supported timing hardware and incorporate those results into live workouts and training analysis.
Timing information may include:
Rep times
Split times
Timing events
Results associated with individual workout repetitions
This information is stored as part of your local MaxSprint workout and training history.
MaxSprint does not send timing-gate results to the MaxSprint developer.
MaxSprint is an independent application and is not affiliated with or endorsed by Freelap.
MaxSprint is designed primarily as an on-device application.
Your MaxSprint information may include:
Athlete profile information
Workout history
Sprint performances
Timing results
Readiness history
Questionnaire responses
CMJ results
App settings
Derived readiness and HRV information
This information is stored locally on your device unless you deliberately export or transfer it.
MaxSprint does not operate its own external user-account database or cloud server for storing this information.
Information held separately within Apple Health is managed by Apple's Health system.
Where MaxSprint provides controls for deleting individual workouts or records, you can use those controls to remove the relevant information.
Deleting the MaxSprint app from your device also removes locally stored application data associated with the app, subject to Apple's device and backup behaviour.
Information stored separately in Apple Health is not necessarily deleted when MaxSprint is removed.
Apple Health information can be reviewed and deleted separately through Apple's Health app.
Likewise, deleting information from Apple Health does not necessarily remove separate training records already stored within MaxSprint.
If you use a MaxSprint backup or export feature, the exported file is controlled by you once it leaves the app.
You decide:
Where the backup is stored
Whether it is saved to iCloud or another cloud service
Whether it is transferred to another device
Whether it is shared
When it is deleted
MaxSprint does not automatically receive a copy of an exported backup.
If you store a MaxSprint backup with another service, that service's own privacy practices apply.
MaxSprint does not:
Sell your personal information
Sell Health information
Use Health or readiness information for advertising
Share Health or training information with advertisers
Share your information with data brokers
Track you across apps or websites for advertising purposes
Use third-party advertising or behavioural tracking services
Health, training and readiness information is used only to provide MaxSprint functionality.
MaxSprint takes user privacy seriously.
Read the full MaxSprint Privacy Policy here:
https://sites.google.com/view/maxsprintapp/privacy-policy
For technical support, privacy questions or other MaxSprint enquiries:
maxsprintapp@gmail.com