Malinaw ang dagdag sa aplikasyon.

Because Filipino very often uses a predicate-first sentence pattern.

In Malinaw ang dagdag sa aplikasyon, the predicate is malinaw and the topic/subject is ang dagdag sa aplikasyon.

A very literal breakdown is:

• Malinaw = clear
• ang dagdag sa aplikasyon = the addition to the application

So the structure is closer to Clear is the addition to the application.

English usually prefers The addition to the application is clear, but Filipino commonly puts the descriptive part first.

Ang marks the topic of the sentence. In many beginner explanations, it is often treated like a subject marker.

So in this sentence:

• ang dagdag sa aplikasyon = the topic / the thing being talked about

It does not work exactly like English the, even though it can sometimes feel similar in translation.

Here, ang tells you that dagdag sa aplikasyon is the main noun phrase connected to malinaw.

Here, dagdag is a noun.

It means something like:

• addition
• added part
• extra item
• increase, depending on context

In Malinaw ang dagdag sa aplikasyon, it refers to the addition or the added part.

If you wanted a verb, Filipino would usually use forms such as:

• magdagdag = to add
• idagdag = to add something
• dagdagan = to add to something

So in this sentence, dagdag is not acting as a verb.

Sa is a very flexible preposition in Filipino. Depending on context, it can correspond to English words like:

• to
• in
• on
• at
• for

So sa aplikasyon could mean:

• to the application
• in the application
• on the application

The most natural interpretation depends on context.

With dagdag, sa aplikasyon often means the thing that the addition is connected to, so the addition to the application is a good way to understand it.

Because ay is not required in this kind of sentence.

Filipino can say:

• Malinaw ang dagdag sa aplikasyon.
• Ang dagdag sa aplikasyon ay malinaw.

Both are grammatical.

The version without ay is very natural and common, especially in everyday speech. The version with ay can sound a bit more formal, careful, or written.

So ay is optional here, not missing.

Yes. That is a correct alternative.

The difference is mainly in word order and style:

• Malinaw ang dagdag sa aplikasyon.
  More common predicate-first structure

• Ang dagdag sa aplikasyon ay malinaw.
  Topic first, often a bit more formal or emphatic

Both mean the same basic thing.

Not only. Malinaw can have several related senses, such as:

• clear
• understandable
• obvious
• distinct
• transparent, in some contexts

In this sentence, it most likely means clear in the sense of easy to understand or clearly stated.

So the exact shade of meaning depends on the situation.

Yes. Aplikasyon is a loanword based on English application.

In Filipino, it can refer to things like:

• an application form
• an application for a job, school, permit, etc.
• application in the sense of use or implementation
• sometimes an app or software application, depending on context

In this sentence, it most likely refers to a formal application such as a document or request.

Possibly, but addition or added part is the safer interpretation unless context clearly points to numbers or amounts.

Dagdag is broad. It can refer to:

• something extra that was added
• an increase
• an additional detail

So if the surrounding context involves a form, document, or request, the sentence probably means that the added part of the application is clear.

If the context is about quantity or amount, increase could also make sense.

A helpful breakdown is:

• Malinaw = clear
• ang = topic marker
• dagdag = addition / added part
• sa = to / in / on
• aplikasyon = application

So a very literal gloss is:

Clear the addition to the application

That literal order sounds unnatural in English, but it helps show how the Filipino sentence is built. The natural English meaning is then something like The addition to the application is clear.