What methods you used for A/B testing?

that's my favourite thing to play around with, although there are plenty of ways when i want to more professional then i use firebase's feature flagging because it give me more control rather than depending out different app stores for all platform on which i have published my app. But i like to create my own REST API's to keep everything in control i create a setting schema on my cached db store where you know i keep the all the feature flags and turn them on and off or change values whenver i wanna test something

I use PostHog's A/B testing feature in my NextJS app.

You can use mida.so for A/B testing with a visual editor (no-code) https://mida.so