В приложении появилось подозрительное списание.

В приложении means in the app / in the application.

Here, в is used with the prepositional case to show location, so приложение becomes приложении.

• приложение = app / application
• в приложении = in the app

Compare:

• в приложении = in the app
• в приложение = into the app

So in this sentence, it is about where something appeared, not movement into somewhere.

In this context, списание means a charge, debit, or withdrawal from an account/card.

It comes from the verb списать / списывать, which can mean to write off, to deduct, or to charge depending on context.

In banking or app/payment language:

• списание средств = deduction of funds
• ошибочное списание = erroneous charge
• подозрительное списание = suspicious charge

So this is not about literally writing something off on paper; it is financial language.

Because the subject is списание, and списание is a neuter singular noun.

In the past tense, Russian verbs agree with the subject in gender and number:

• masculine: появился
• feminine: появилась
• neuter: появилось
• plural: появились

Here:

• списание = neuter singular
• therefore появилось

Even though the subject comes after the verb, it is still the subject, so the verb agrees with it.

Because подозрительное has to agree with списание.

Списание is:

• neuter
• singular
• nominative here

So the adjective must also be:

• neuter
• singular
• nominative

That gives:

• подозрительный — masculine
• подозрительная — feminine
• подозрительное — neuter
• подозрительные — plural

So подозрительное списание = a suspicious charge.

Because it is the subject of the sentence.

Russian word order is more flexible than English word order. The subject does not have to come before the verb.

So:

• Подозрительное списание появилось в приложении.
• В приложении появилось подозрительное списание.

Both can mean the same thing: A suspicious charge appeared in the app.

In the original sentence, the speaker starts with where it appeared, and then introduces what appeared.

This word order is natural if the speaker wants to set the scene first:

1. where: в приложении
2. what happened: появилось
3. what appeared: подозрительное списание

This often sounds like In the app, a suspicious charge appeared or more naturally in English, A suspicious charge showed up in the app.

If you say:

• Подозрительное списание появилось в приложении

the focus shifts slightly toward the suspicious charge itself.

Russian often moves information around depending on what is already known and what is new.

Появилось means appeared, showed up, or turned up. It tells you that something newly became visible or present.

So the sentence is not just saying there is a suspicious charge in the app, but rather a suspicious charge appeared in the app.

Compare:

• В приложении есть подозрительное списание.
  = There is a suspicious charge in the app.

• В приложении появилось подозрительное списание.
  = A suspicious charge appeared/showed up in the app.

The second one suggests a change: it was not there before, and now it is.

Появилось is the past tense of появиться, which is perfective.

Perfective verbs usually present an action as a completed event or a single occurrence. Here that fits well: the charge appeared.

Compare:

• появилось = appeared / showed up
• появлялось = was appearing / used to appear / would appear

So появилось is the normal choice if you are talking about one specific suspicious charge showing up.

Not always by itself, but in modern everyday usage, very often yes.

Приложение can mean:

• an app
• an application
• an attachment or appendix in some contexts

But in a sentence about a suspicious financial charge, в приложении most naturally means in the app, especially a banking app or payment app.

Context usually makes this clear.

It could be translated that way in some situations, but appeared / showed up is closer to the Russian.

The Russian verb появилось contains the idea of coming into view or showing up. So a more faithful translation is:

• A suspicious charge appeared in the app.
• A suspicious charge showed up in the app.

If you say There was a suspicious charge in the app, you lose some of that sense of new appearance.

Yes, it sounds natural, especially in the context of banking, payments, or account monitoring.

It could easily be something a user says after checking a banking app:

• В приложении появилось подозрительное списание. = A suspicious charge appeared in the app.

Other natural variations might be:

• В приложении появилось неизвестное списание.
  = An unknown charge appeared in the app.

• В приложении отобразилось подозрительное списание.
  = A suspicious charge was displayed in the app.

But the original sentence is perfectly normal.