In my experience it is, there are other wallets that you can use with the same credibility as Electrum, open-source safe secured these are the qualities of Electrum that is why it is one of the most used wallets, I highly recommend that you also use other wallets for diversification or not putting all your eggs in one basket, you can use an android phone if you are going to transact but when it comes to storing use a desktop version or better a ledger.