These days it is getting popular to use e vocabularies. While this phenomenon can make learners lazier, i believe that it is one of the most significant factors of fast-learning.
Regarding the cons of online dictionary apps, as they fast and free to use with some additional functions, they can turn people into a lazy. To exemplify, why one has to learn new words if it is ready-to-use translators in his pocket? Despite its convenience online translators do not teach, however easy to get to used to. By this point no progress can be seen, if one can rely to an automation.
Turning to benefits of electronic dictionaries, they can play a huge role as an assistant and help people to improve their lexical resources. By doing so, not only an individual but the developers of such apps can benefit too, as numbers of users might get increase and leave a positive feedbacks. For instance, I, personally, use such program on my mobile, therefore I can contend that, if it is used correctly, it is guaranteed that, the person would achieve their desirable results. Also, exactly this type of language translation app helped me to reach highs in terms of vocabulary.
In conclusion, i consider that, electronic apps can be the key factors of success in educational terms, which pulls the overall balance in favor of positives of this development.