nsave provides a dedicated US routing number and account number for ACH transfers, and accepts inbound SWIFT transfers, according to its own Pakistan pages. It says it serves freelancers and professionals in markets including Pakistan, Bangladesh, Nigeria and Egypt.
These details come from nsave's marketing pages, which also compare it against competitors, so read them with that in mind.
nsave also advertises 3.2% annual rewards on USD balances and investing from $1. Rewards like these can change, so check the current terms in the app before relying on them.