To clear the cache on iPhone apps, you'll need to offload them. Offloading an app will free up storage space the app uses while still keeping its documents and data. If and when you reinstall the app, your data will be reinstated.
1. Open the Settings app.
2. Select "General"
3. and tap "iPhone Storage."
4. Select ZenMaid to offload and tap "Offload App."
5. Select "Offload App" from the pop-up window to confirm your choice. You can also delete the app if you no longer need it.
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