VerbBusters is a straight-forward iPad app for learning and practicing recognizing English irregular verbs. VerbBusters supports learners whose native languages are French, Spanish, German, Portugese, and Italian. The app can also be used by native English speakers to practice recognizing past and present tenses of verbs.
VerbBusters has two modes; a practice mode and a quiz mode. To start using the app students have to select a base or native language. After choosing a language students select a level of difficulty from beginner through advanced learner. Each activity has students type the infinitive, past tense, and participle of each verb. If students get stuck in the practice mode they can tap the help button to get the correct answer.
VerbBusters costs $1.99. It could be a good practice application for high school ELL students.