Hi there! I see you're having trouble with the Workout Planner Muscle Booster app freezing on your iPhone running iOS 18.6.2. Let's work together to get that sorted out.

Could you please tell me a bit more? For example, does the app freeze right when you open it, or does it happen during a workout or some specific action? Also, have you tried restarting the app or your phone already?

In the meantime, here are some general steps we can take to address the freezing issue:

1. Force Close the App and Reopen
- On your iPhone, swipe up from the bottom and pause in the middle to see your open apps.
- Find the Muscle Booster app and swipe it off the screen to close it completely.
- Then, open it again to see if the freezing persists.

2. Restart Your iPhone
- Sometimes a fresh start can clear up temporary glitches.
- Press and hold the side button and either volume button until the slider appears.
- Slide to power off, wait 30 seconds, then press the side button again to turn it back on.

3. Check for App Updates
- Open the App Store, tap your profile icon at the top right, then scroll to check if there's an update available for Muscle Booster.
- Updating may fix bugs causing freezing.

4. Reinstall the App
- If the above steps don’t help, try deleting the app:
Press and hold the Muscle Booster icon, tap “Remove App,” then confirm “Delete App.”
- After that, reinstall the latest version from the App Store. This clears any corrupted data.

5. Free Up Storage
- Lack of available storage can sometimes cause app performance issues.
- Go to Settings > General > iPhone Storage to see if you have enough free space (at least a couple of GB). Delete unnecessary files or apps if needed.

If after trying these steps the app still freezes, there might be an underlying issue, possibly server-side or with your account syncing. In that case, I can guide you on contacting the app's technical support for deeper help.

Let me know what you’ve tried or how it goes with these steps, and we’ll take it from there!

Are you satisfied with this approach so far?