Their "Nicos Weg" A2 course is a gold standard for free, interactive vocabulary and grammar practice. Conclusion

They provide a wealth of free digital practice materials and apps specifically designed for A2 learners.

If you find a legitimate "Deutsch üben Wortschatz & Grammatik A2 PDF" or ebook, don’t just read it— is the only way to make the language stick:

Communicate in simple, routine tasks requiring a direct exchange of information.

Instead of studying grammar in a vacuum, you see how specific verbs require specific vocabulary.