well first of all it seems that sparkle is background checking your stuff it is not really self-custody, also after i realised this i doesnt let me send out what i have recieved
its either sayin:
im blocked,
not the right ammount,
not enough for fees,
it put extra six zeros to the ammount i set to send out,
it is going offline without any reason,
its great at getting money, it is not great when you want to send it somewhere else whereyou feel more safe
also it was really shady that they are very monero on the surface and they are still allowing all the shitcoins and shitxchanges in the app
it is a privacy whashed app
thats why primal also implemented spark
https://www.aicoin.com/en/article/460923