アプリケーション開発 かいはつツールでしょう
apurikēshonkaihatsutsūrudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of アプリケーション開発ツール

1. Application development tool, probably.; It will likely be an application development tool.

Polite
Presumptive
Conjecture
Computing