[feature] Quick add subscription using back tap (tap to add)

Adding subscriptions can take multiple steps, which creates friction and slows users down. This will be a viral feature that can be used across socials.

We want to make adding a subscription possible in seconds from anywhere.

Goal:

• Trigger quick add using iPhone back tap

• Open a lightweight input (overlay or widget-style)

• Let users:

  • Search or enter subscription name

  • Enter amount

  • Select profile

  • Choose billing frequency

• Save instantly without navigating through full flow

A sample example can be this tiktok video for tapsheet app.