kono apuri wa benride, shikamo yasui desu.

topic particle

Breakdown of kono apuri wa benride, shikamo yasui desu.

• です: to be
• 安やすい: cheap
• 便利べんり: convenient

Questions & Answers about kono apuri wa benride, shikamo yasui desu.

Why is は used after アプリ?

は is the topic marker. It tells you what the sentence is about.

So in:

このアプリは便利で、しかも安いです。

the topic is このアプリ = this app.

A natural way to think about it is:

• As for this app, it’s convenient, and what’s more, it’s cheap.

It is not marking the subject in exactly the same way English does. It is setting up the topic: “speaking of this app…”

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What is the difference between この and これ?

この means this, but it must be followed by a noun.

• このアプリ = this app

By contrast, これ can stand on its own:

• これは便利です。 = This is convenient.

So you use:

• この + noun
• これ by itself

That is why the sentence uses このアプリ, not just この.

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Why is アプリ written in katakana?