Proton has a pretty good importer for GMail/Calendar/Contacts.
The downside is that their Android calendar app is shit (a rewrite should come later this year), and Android contact syncing doesn't exist (planned for 2027). Not sure how the situation looks on iOS, but AFAIK it's similar.
The downside is that their Android calendar app is shit (a rewrite should come later this year), and Android contact syncing doesn't exist (planned for 2027). Not sure how the situation looks on iOS, but AFAIK it's similar.