Top 3 problems for existing upsell apps

[jeff0723]

Hello, I am a newbie Shopify developer.  I am now looking to develop an upsell app, hence I would like to collect some thoughts from merchants.

What is your most annoying pain point when using existing upsell apps? Or which part can be done better.

I am willing to dig deeper to understand your problem, any feedback is appreciated.

Best,

Jeffrey

[profitwhales]

Probably it's data loss and security issues...