Brief in Spanish of basic English grammar for revision and quick consult.
Including tenses, main patterns, common linkers, word formation by prefixes and suffixes, among other topics being included in the future: tenses and verb forms, modal verbs, passive and causative, relative clauses, conditional clauses, reported speech, linkers, phrasal verbs, writing production. Apart from the resources in each section, linkers to Internet websites and Youtube channels and playlists are recommended, too.
This app is web based, requiring Internet connection the first time to download the contents of each section. Then it works by showing contents stored in cache. Closing and reiniciating the app regularly is advisable to update contents.
BEG Compendium app is free, but advertisements may appear to finance the necessary services.