## Problem
While tracking strength gains (e.g., hitting a new PR on pull-ups) is concrete and rewarding, tracking flexibility and mobility progress is notoriously difficult. Goals like "solve back pain" or "touch toes while standing" are often long-term and lack immediate, measurable milestones. Without a way to quantify small improvements, users frequently feel they are stagnant, leading to frustration and dropout.
## Proposed Solution
I suggest implementing a Flexibility Assessment Test feature, similar to the workflow used by physiotherapists or the GOWOD app.
### How it works
Initial Assessment: Users perform a standardized set of mobility tests (e.g., shoulder range, hamstring flexibility, hip mobility). The app estimates current Range of Motion (ROM) based on user input, photos, or guided angles.
Integrated Workouts: The app recommends specific flexibility routines based on the assessment results.
Periodic Re-Testing: A prompt to re-take the assessment every month (or user-defined interval).
Progress Dashboard: A visual dashboard that tracks ROM improvements over time, converting "feeling better" into hard data (e.g., "Hamstring flexibility improved by 15°").
## Why it matters
Calistree has a whole flexibility part, and already has plenty of data on muscle recovery, exercises progression and the likes. I think adding this would really improve the user engagement with flexibility and mobility training which are often overlooked by athlets.
It would add tangible feedback, increasing accountability with trying to beat last month's score.
Reference Apps like GOWOD have successfully proven that users are willing to engage in mobility work if they can see a clear visual representation of their improvement. Integrating this directly into Calistree would be a game-changer for flexibility-focused users.

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