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Is there's a way in which users of mobile devices prefer to perceive grid view content?

I'm a mobile developer and stare at mobile interfaces quite a lot. One of the things that was bothering me for some time is edges of rectangular grid view cells.

When grid view cells are presented on mobile devices with high pixel density displays, the edges of the cell can be "too sharp" - my eyes perceive such cells as if they are bordered by razor blades. One pixel is white, the adjacent pixel is some other sharply contrasting color. There's nothing like this in nature.

I've seen a few of ways that people have attempted to deal with this issue:

  • Introduce a semi-transparent border around the cell, so the transition from cell to background is not as jarring
  • Use rounded corners with borders
  • Use drop shadows or other gradient effects around cells
  • Change the background to be some pattern or gradient (was more prevalent in 2011)

Does general public has preference for any of these?

Examples:

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closed as primarily opinion-based by DA01, Evil Closet Monkey, Charles Wesley, Benny Skogberg, msp Dec 15 '14 at 13:30

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • I think this is mostly more of a personal aesthetic call than a user-experience data point. – DA01 Dec 12 '14 at 18:09
  • While there are some articles on rounded vs. squared corners floating around the web, the question - as written - is indeed asking about user's personal opinion... which we can't answer to. – Evil Closet Monkey Dec 12 '14 at 18:30
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disclaimer: I am a developer, with personal interest for UI and UX. So my main competencies are on the dev side: feel free to comment and let me know if something I say is questionable.

What kind of style you want your UI to have?

Using rounded corners VS square corners have IMO more implication than just solving the "blend with background" issue, I'm just listing a couple of them, but probably if you step a bit backwards from "what style should I have for this interface" to "what do I communicate using this interface" you will be able to make a choice that is simply coherent with more general questions.

Application style and Brand

Your app will be inserted in a wider emotional context. Maybe you already have (or you will need to define) a brand, a tone and a communication style that should be consistent acorss the app and the entire brand (if you have a web counterpart, or something like that) Rounded corners have a friendlier, smoother, more childish tone. This can obviously be tuned and mitigated, but still something round communicates a softer tone. Square corners are elegant, simpler, bold. Again, depending on the tone you're seeking and the emotions and feeling you want to convey, one can be better than the other.

Design Trends

the new trend on android following the L design style seems to go towards a bolder approach, in which the crisp borders fit better. mobile design and tech enthusiast may be happy to see similar style in new apps, so if your target is this niche it may be interesting to explore more this kind of approach, and use maybe shadows / cards to be in line with the platform.

On the other side, rounded corners are a bit more web 2.0-ish, that is now a not-so-new style, but has spread out and had been able to spread wide also in paper-based communication etc. So at the moment rounded corners may better for other niches or people that are not early adopters, since it is a style almost everyone has been somehow already exposed to. (I had recently been asked explicitly by a major carrier for rounded corners, that I personally find a bit old-looking. It's not clear to me if this is because the requirements were coming from someone that was not forward looking, or because they evaluated that rounded corners were better fitting their users, but still, it has some value)

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