1. Open Settings: Launch the Settings app on your iPhone.
2. Go to General: Scroll down and select General.
3. Select iPhone Storage: Tap on iPhone Storage to view a list of installed applications.
4. Find the App: Scroll through the list and tap on the app you want to clear the cache for (e.g., mySecondTeacher).
5. Offload the App: Tap on Offload App. A popup will confirm the action; tap Offload App again to confirm.
6. Reinstall the App: After the app is offloaded (deleted while preserving its data), tap on Reinstall App to download it again.

Note:

• Offloading an app clears its cache while keeping its data intact.
• There’s no direct “clear cache” option in iOS; offloading is the most effective method.

You can follow these steps for any app on your iPhone.