Frequently Asked Questions

  • SYNC is a women’s training and recovery app that brings together recovery and training load data, menstrual cycle information, and self-reported symptoms to provide personalised daily training guidance.  By combining signals such as heart rate variability, resting heart rate, sleep, and training load with cycle context, SYNC helps women better understand how their body is responding and what it may be ready for each day.

  • SYNC analyses signals from recovery and training load data, such as sleep trackers and fitness trackers alongside menstrual cycle information and self-reported symptoms to generate a daily SYNC Score. This score reflects how much training stress your body is likely to tolerate on a given day, based on::

    • Recovery signals (HRV, sleep, resting heart rate, body temperature and more)

    • Recent training load and intensity

    • Menstrual cycle phase and hormonal context

    • Manual check in capturing readiness to train and subjective wellness symptoms

    SYNC then translates this into simple, personalised training guidance.

  • The SYNC Score is a daily score designed specifically for women. It reflects how well your body is recovering and how much training stress it is likely to tolerate that day. Unlike generic readiness scores, the SYNC Score incorporates menstrual cycle context alongside recovery and training data.  SYNC builds this using your own data over time, rather than relying on population averages, so guidance becomes increasingly personalised. 

  • SYNC analyses a range of signals to understand how your body is responding to training and recovery. These may include:

    • Heart rate variability (HRV)

    • Resting heart rate (RHR)

    • Respiratory rate

    • Sleep duration and quality

    • Basal body temperature

    • Training intensity and load

    • Menstrual cycle phase

    • Self-reported wellbeing and symptoms 

    By combining these signals together, SYNC provides a more complete view of how your body is showing up today, so women don’t have to go to countless different apps and make sense of separate data and advice.

  • No. SYNC is designed to guide, not restrict training.  

    SYNC helps women better understand how their body is responding to stress and recovery so they can make informed training decisions.  Some days may be better suited to higher intensity, while others may be better for lighter training, recovery or technique work.

  • No.  SYNC is designed as a training guidance tool, not a medical device.  It provides insights based on physiological signals and menstrual cycle context to support training decisions, but it does not diagnose or treat medical conditions.

  • SYNC works best when connected to wearable devices that track recovery signals such as heart rate variability, sleep and resting heart rate.  However, SYNC also incorporates subjective signals, such as how you feel, symptoms and menstrual cycle information, to provide guidance that reflects the whole picture of your physiology.

  • Hormonal changes across the menstrual cycle, for many women, can influence recovery, temperature regulation, sleep, energy levels and how the body responds to training. For example, some women may tolerate higher training loads during parts of the follicular phase, while others may experience greater fatigue or reduced recovery capacity during the late luteal phase.

    SYNC does not make assumptions. Instead, it helps you understand how your body responds to different phases by analysing your data over time.

  • No. Every woman’s physiology and cycle experience is different.  SYNC does not assume that all women respond the same way across their cycle. Instead, it combines menstrual cycle context with your personal recovery and training data to build a more individualised picture.  Over time, SYNC learns how your body responds to training across different phases of your cycle.

  • SYNC is designed for women who want to train, exercise or stay active while better understanding their body. This includes:

    • Runners and endurance athletes

    • Gym and strength training enthusiasts

    • Women using wearable devices

    • Coaches working with female athletes

    • Women interested in cycle-aware training

    • Women who have previously felt frustrated by their training

    • Women who have not previously tracked their cycle but want to understand how it might be impacting their performance

  • Most fitness and recovery apps are built using models developed primarily on male physiology.  SYNC is designed specifically for women and integrates menstrual cycle context alongside personal recovery and training data and the all important symptom and wellbeing check-in. Rather than just presenting data, SYNC translates it into clear, actionable training guidance.

  • Yes. SYNC is designed to support women in training consistently across their cycle, while recognising that recovery capacity may fluctuate.  Rather than avoiding training at certain times, SYNC helps guide how training intensity and load might be adjusted for long term success.