The Original Layout
Tabs on the top isn’t iOS friendly.
I’ll do the layout
You can definitely keep the custom UI for the tabs, just put them on the bottom. If you want to keep the notch that connects the tab to the filter bar, the filter bar can be docked to the bottom as well.
The Now/Later Tips/Encouragement tag filters are colored differently. Based on the content in the mockup, the color has no relevance on whether the filter is active. If you are trying to differentiate the types of filters, labels would be more efficient.