why the apple logo is half eaten?

Because it was designed that way 40 years ago (long before Android).

And iOS is eating Android for breakfast, lunch and dinner.

Seems it is more than a story - with many thanks to our friend romad's cooking it down in this post > Re: Meaning of the bite on Apple logo?

Here is the reference he makes from the article cited in the OP ( the ¶ formatting & emphasis is mine for clarity)

Interview with Rob Janoff, designer of the Apple logo

Ivan | Mon, 2009-08-03 10:14

- http://creativebits.org/interview/interview_rob_janoff_designer_apple_logo

...

CB: Is it possible you were influenced subconsciously by these stories?

RJ: Well, I'm probably the least religious person, so Adam and Eve didn't have anything to do with it. The bite of knowledge sounds fabulous, but that's not it. And there is a whole lot of other lore about it. Turing the famous supposed father of computer science who committed suicide in the early 50's was british and was accused of being homosexual, which he was. He was facing a jail sentence so he committed suicide to avoid all that. So, I heard one of the legends being that the colored logo*(see below) was an homage to him. People think I did the colored stripes because of the gay flag. And, that was something really thought for a long time. The other really cool part was that apparently he killed himself with a cyanide laced apple. And, then I found out Alan Turing's favorite childhood story was Snow White where she falls asleep forever afrer eating a poisoned apple to be woken up by the handsome prince.

Anyway, when I explain the real reason why I did the bite it's kind of a let down. But I'll tell you. I designed it with a bite for scale, so people get that it was an apple not a cherry.

Also it was kind of iconic about taking a bite out of an apple. Something that everyone can experience. It goes across cultures. If anybody ever had an apple he has probably bitten into it and that's what you get. It was after I designed it that my creative director told me: "Well you know, there is a computer term called byte". And I was like: "You're kidding!" So, it was like perfect, but it was coincidental that it was also a computer term. At the time I had to be told everything about basic computer terms.

...

*

There! That's that!

ÇÇÇ

👿 with a precise set of teeth ?

[chuckle] - only one problem though... Photographers take pictures with cameras - Graphic Designers draw logos with art tools (copyrights often are awarded to their first commitment to a 'Tangible Medium', often beginning with pen/pencil drawing an a table napkin in a bar) - let's see whether Rob was hungry...

Rob Janoff writes for LogoTalks.com >

Apple logo designer, his early career and legends, lore of the Apple Logo

He may of may not have employed the Golden Ratio - but certainly used drafting tools

This article contains many of the sources for the "stories" (a spade a spade = "rumors") > http://fineprintnyc.com/blog/history-of-the-apple-logo -

I'll stick with Janoff's explanation, this one from his aforementioned artice...

... The bite gave the apple the correct scale.

The bite also keeps the shape from being confused with any other piece of round fruit.

In addition, I think taking a bite out of an apple is a universally shared and pleasant experience.

... me too.

ÇÇÇ

Bugs.

The photographer was hungry

One story is that it was to give a sense of scale, so that it didn't look like a cherry.

Abdullahkhan.27 wrote:

thanks to all my friends to tell me the answer...............now i can reply my friends with a strong answer

You may also want to get some new friends. 😉

I meant friends who have better things to do than deride your choice of phones.

I'm going with the hungry guy, but thanks all the same. Nice tale.

His orthodontist is American