The best alternatives to 36 Questions are Love Actualized, 36 Questions, and Coupl App. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of 36 Questions?
Universal-2 by AssemblyAI— Speech-to-Text API for conversational data
Coupl relationship app is the perfect free app for couples who want to build stronger relationships. It gives couples new personal daily questions and has them try to guess their partner's answers.