Frontly has quickly become one of my favorite tools over the past months. This is especially fueled by the fact the founder, Patrick, has built an amazing team. The customer service is absurdly good, and the rate at which they ship new features is honestly bonkers!
I see Frontly as a huge competitor to mostly CRUD-app builders like Glide, Softr, Adalo, etc. However, Frontly has so many customization features and such a robust actions engine that I would put it closer to Bubble in terms of what you can achieve with the platform.
There's a lot more to implement and work on to get there, but if anyone has my vote of confidence, it's Patrick and the Frontly team!
Highly recommended, check it out!