Depth · Distinct visual layers and realistic motion convey hierarchy, impart vitality, and facilitate understanding. Touch and discoverability heighten delight and enable access to functionality and additional content without losing context. Transitions provide a sense of depth as you navigate through content.

Apple

Depth

Apple Human Interface Guidelines

Apple design principles

Design

Apple

Guidelines

iOS

Human interface

Torsten Caspar

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Clarity · Throughout the system, text is legible at every size, icons are precise and lucid, adornments are subtle and appropriate, and a sharpened focus on functionality motivates the design.

Apple

Clarity · Negative space, color, fonts, graphics, and interface elements subtly highlight important content and convey interactivity.

Apple

Deference · Fluid motion and a crisp, beautiful interface help people understand and interact with content while never competing with it. Content typically fills the entire screen, while translucency and blurring often hint at more.

Apple

Deference · Minimal use of bezels, gradients, and drop shadows keep the interface light and airy, while ensuring that content is paramount.

Torsten Caspar

Aesthetic integrity · It represents how well an app’s appearance and behavior integrate with its function. For example, an app that helps people perform a serious task can keep them focused by using subtle, unobtrusive graphics, standard controls, and predictable behaviors.

Apple

Aesthetic integrity · An immersive app, such as a game, can deliver a captivating appearance that promises fun and excitement, while encouraging discovery.

Torsten Caspar

Consistency · A consistent app implements familiar standards and paradigms by using system-provided interface elements, well-known icons, standard text styles, and uniform terminology. The app incorporates features and behaviors in ways people expect.

Apple

Direct Manipulation · The direct manipulation of onscreen content engages people and facilitates understanding. Users experience direct manipulation when they rotate the device or use gestures to affect onscreen content. Through direct manipulation, they can see the immediate, visible results of their actions.

Apple

Feedback · It acknowledges actions and shows results to keep people informed. The built-in iOS apps provide perceptible feedback in response to every user action.

Apple

Feedback · Interactive elements are highlighted briefly when tapped, progress indicators communicate the status of long-running operations, and animation and sound help clarify the results of actions.

Apple

Metaphors · People learn more quickly when an app’s virtual objects and actions are metaphors for familiar experiences—whether rooted in the real or digital world.

Torsten Caspar

Metaphors · They work well in iOS because people physically interact with the screen. They move views out of the way to expose content beneath. They drag and swipe content. They toggle switches, move sliders, and scroll through picker values. They even flick through pages of books and magazines.

Torsten Caspar

User Control · Throughout iOS, people—not apps—are in control. An app can suggest a course of action or warn about dangerous consequences, but it’s usually a mistake for the app to take over the decision-making. The best apps find the correct balance between enabling users and avoiding unwanted outcomes.

Apple

User Control · An app can make people feel like they’re in control by keeping interactive elements familiar and predictable, confirming destructive actions, and making it easy to cancel operations, even when they’re already underway.

Apple

Members of royal families are born into a world of indulgence and entitlement, and the princelings who grow up that way may never have to develop the emotional musculature that will allow them to show self-restraint.

Jeffrey Kluger

Begin at the beginning, and go on till you come to the end: then stop.

Lewis Carroll

Best strategy for a first date is to ask her questions. Just keeping asking her questions about herself. Her life, her job, her friends, her taste in movies and music and everything. People mostly just want to talk about themselves, so let her do that.

Michael Ian Black

Depending on which day, and how I am feeling on that day, I have a different favorite song on the album. One day it might be 'Karma', and other days it is 'Stay For A While'

Angie Stone

Healthy is in the eye of the beholder.

Yotam Ottolenghi

It's always nice to end your sentences with an exclamation mark, and not a comma.

Joey Santiago

My strong point, if I have a strong point, is performance. I always do more than I say. I always produce more than I promise.

Richard M. Nixon

He lies there with no heart but heartless is the last thing youll call him.

Sonali Jain

During my time we had two chairman of the joint chiefs of staff, at different times of course, on the bridge, both of whom asked my permission to sit on the captain's chair.

Patrick Stewart

Music is powerful. As people listen to it, they can be affected. They respond.

Ray Charles

Work done with anxiety about results is far inferior to work done without such anxiety, in the calm of self-surrender.

The Bhagavad Gita

I always give 100 at work 13 Monday 22 Tuesday 26 Wednesday 35 Thursday 4 Friday. Welcome back weekend.

Anonymous

It's one of the strangest attributes of this profession that when we writers get exhausted writing one thing, we relax by writing another.

Dan Simmons

It is better to deserve honors and not have them than to have them and not deserve them.

Mark Twain

January, month of empty pockets! let us endure this evil month, anxious as a theatrical producer's forehead.

Sidonie Gabrielle Colette

The whole process of being one of the 10 finalists for the 'Vogue' Fashion Fund award has to be my biggest achievement to date. Meeting Anna Wintour, Diane von Furstenberg, etc., has been an amazing experience that even now gives me goose bumps when I think about it.

Simon Spurr

Get off the beaten path... If you want to find those mom-and-pop joints, those funky little places, just ask around.

Guy Fieri

More than anything, we must do better for our children's education.

Cory Booker

I'm a pro-life, pro-gun Louisiana Democrat.

Charlie Melancon

Actresses are so spoilt - we have someone who does our hair for us on set, so we don't know how to do it ourselves in real life. I know how to wash my hair and brush my teeth, but that's about it!

Clemence Poesy

We live in a society where detachment is almost essential.

Philip K. Dick

I don't believe in politics; I don't understand any of it.

Maira Kalman

I used to switch up my cologne every two to three months, get a new wave - Dolce, Versace, Burberry. But Black Orchid, that joint stayed. That's the smell of beauty that stays on you... and girls love Tom Ford.

Wale

I don't go to the federal government and say, 'Fund my program.'

Rick Scott