kono apuri nara, kaigi no zikan ga sugu kakunin dekiru.

Here, なら adds the nuance of if it’s this app or when it comes to this app.

So このアプリなら literally feels like:

• if it’s this app
• as for this app
• with this app, at least

In natural English, that often becomes something like With this app, ... or If you use this app, ...

It can also suggest a slight contrast, such as:

• other apps might not be as good
• this particular app is suitable for checking meeting times

So the nuance is not just naming the app, but saying this app is the one that makes it possible / convenient.

は would simply make this app the topic: As for this app...

なら is more conditional and situational. It suggests:

• if you’re talking about this app
• if you use this app
• for this app, that’s possible

Compare the nuance:

• このアプリは、会議の時間がすぐ確認できる。
  = This app lets you quickly check meeting times.
  A plain statement about the app.

• このアプリなら、会議の時間がすぐ確認できる。
  = With this app, you can quickly check meeting times.
  This sounds more like this app is a good option or this app, unlike others, can do it.

会議の時間 means the meeting’s time or the time of the meeting.

Breakdown:

• 会議 = meeting
• の = links nouns, often like of
• 時間 = time

So 会議の時間 is a noun phrase meaning:

• the time for a meeting
• the meeting time
• depending on context, possibly meeting times in general

In this sentence, it most likely means the time of a meeting / meetings that you want to check in the app.

This is a very common question. The short answer is: with できる expressions, the thing that is possible is often marked with が.

Here:

• 会議の時間が確認できる = the meeting time can be checked = you can check the meeting time

Even though English uses a direct object, Japanese often switches to が with potential forms.

This is especially common with patterns like:

• 日本語が話せる = can speak Japanese
• ピアノが弾ける = can play the piano
• 予定が確認できる = can check the schedule

So が is natural here because 確認できる means can confirm / can check.

Yes, the meaning is basically the same.

• 確認する = to confirm / to check
• 確認できる = can confirm / can check
• 確認することができる = can confirm / can check

確認できる is the shorter, more natural version in everyday Japanese.

This works because 確認 is a verbal noun (a noun that can combine with する to make a verb). So:

• 確認する = do confirmation → check/confirm
• 確認できる = confirmation is possible → can check/confirm

So this sentence uses a very normal and compact way to say can check.

Here すぐ means something like quickly, right away, or immediately.

So すぐ確認できる means:

• can check right away
• can quickly check
• can easily check without delay

Depending on context, すぐ can mean either:

• immediately / right away
• soon

In this sentence, because it comes before 確認できる, it describes how quickly you can do the checking, so quickly/right away is the best interpretation.

Japanese often leaves out the subject when it is understood from context.

So this sentence does not explicitly say:

• you can check
• I can check
• we can check

It just says that, with this app, checking the meeting time is possible.

In many situations, English needs a subject, so we translate it as:

• You can quickly check the meeting time with this app. or
• With this app, you can quickly check meeting times.

But in Japanese, leaving the subject unstated sounds natural.

It is in the plain form.

The ending できる is plain. A more polite version would be:

このアプリなら、会議の時間がすぐ確認できます。

That would be more appropriate in:

• customer service
• business speech
• formal explanations
• speaking to someone you do not know well

The original sentence is still perfectly normal. It just sounds more neutral or casual.

The comma is not absolutely required, but it is very natural here.

It helps separate the topic/condition:

• このアプリなら、 = As for this app / With this app, from the main statement:
• 会議の時間がすぐ確認できる。

So the comma makes the sentence easier to read and gives a slight pause. Japanese commas are often used more flexibly than English commas.

Yes. That is a very natural way to express the same idea in English.

Japanese does not always distinguish sharply between:

• can check
• is able to check
• lets you check
• makes it easy to check

Because of このアプリなら plus すぐ確認できる, the overall meaning is that this app is useful for quickly checking meeting times.

So depending on the situation, good translations could include:

• With this app, you can quickly check the meeting time.
• This app lets you quickly check meeting times.
• If you use this app, you can check meeting times right away.

All of these capture the basic idea well.