Are there any voice language translation devices that translate Maltese to English
I believe you are talking about spoken language, i.e., interpretation of free conversation. If so, I only have "UDTalk" which I used for a couple of other languages which worked flawlessly. It shows Maltese is one of the language it can speak. I do not use this type of app frequently, except in overseas, and don't know if it's one of the best but it worked really well. I thought iOS has it's own app for this.