Samourai Wallet is a very secure wallet for storing bitcoins only. It is an open sourced wallet with a quite advanced and sophisticated technology. It was developed in 2015. I've used this wallet for barely a month and I've been able to draw out a few conclusions from the little time I used this wallet. As I said earlier, this wallet is a bitcoin-only wallet meaning it is a specific and a coin selective wallet, Samourai wallet has its positive and the negative parts of using it. While using the wallet, I discovered that it was compatible with VPN, this has further enhanced the anonymity that Samourai wallet offers to its users. The transaction speed here is quite satisfactory, it has a transaction speed of almost two minutes( during my time of using it). As a means of protecting users privacy, Samourai wallet helps users generate a unique transaction address after every transaction they make. Samourai wallet is a mobile app which is only compatible with Android but not iOS! This is a disadvantage and a setback to iPhone users. But with my time on Samourai wallet I noticed that not everyone could use it, except you have vast knowledge in cryptography so i wouldn't recommend this wallet for a beginner like myself. Don't bother contacting support team as they are always inactive. Getting to use Samourai wallet was more of a disadvantage than an advantage to me as a new user!