{ evil genius level 5 }

iPhone 5-6 Screen Size Cheat Sheet


Logical Coordinate Space (portrait)

Model Size (points) Scale
iPhone 5/5S/5C 320 × 568 @2x
iPhone 6 375 × 667 @2x
iPhone 6 Plus 414 × 736 @3x

Device Coordinate Space

Model Size (pixels)
iPhone 5/5S/5C 640 × 1136
iPhone 6 750 × 1334
iPhone 6 Plus 1,242 × 2,208*

* Downsampled to 1080 × 1920 px.

SpinKit 1.1

With the help of contributors, I have just released a new version of SpinKit for iOS. This new version adds 9 new animations summing up to 13 animations in total. Here is a video of the demo app cycling through all 13 animations:

Using Rake to deploy a static site to S3

One of my favorite development tools is Rake. Not so long ago I discovered how great this tool is and started using it for automating development chores.

The Rakefile of a static site project would look something like this:

require "s3"
require "mimemagic"

desc "Deploys the site to S3"
task :upload do |t, args|
  service = S3::Service.new(:access_key_id => "...",
                            :secret_access_key => "...")

  bucket = service.buckets.find("mybucket")

  files = Dir['*.html'].to_a
  files += Dir['css/*.css'].to_a
  files += Dir['js/*.js'].to_a
  files += Dir['img/*.*'].to_a

  files.each do |source|
    object = bucket.objects.build(source)
    object.content = File.open(source)
    object.content_type = MimeMagic.by_path(source)
    puts "Uploaded https://#{bucket.name}.s3.amazonaws.com/#{source}"

Dependency Management

To manage our dependencies we will use Bundler. The Gemfile should look something like this:

source "http://rubygems.org"

gem "s3"
gem "mimemagic"

SVG background images with PNG fallback

SVGs are awesome, but Android's browser didn't support them until version 3.0, and since 2.x devices represent more than 50% of Android's market share it is still important to provide a fallback.

Sass Mixins FTW

One of my favorite features of Sass are mixins, they let you reuse chunks of CSS code and keep things DRY. The mixin we created looks something like this:

@mixin svg-background($name, $w, $h) {
  background: url('../images/#{$name}.svg') no-repeat;
  background-size: $w $h;
  .no-svg & {
    background-image: url('../images/png/#{$name}.png');

And can be easily included:

#brush-selector {
  .pencil {
    @include svg-background('pencil', 15px, 8px);

This will generate something that looks like:

#brush-selector .pencil {
  background: url("../images/pencil.svg") no-repeat;
  background-size: 15px 8px;

.no-svg #brush-selector .pencil {
  background-image: url("../images/png/pencil.png");

Feature Detection

For detecting whether or not SVG is supported we can use Modernizr or roll out our own. I decided to roll out my own to keep it lightweight.

$(document).ready(function () {
  var supportsSVG = document.implementation.hasFeature('http://www.w3.org/TR/SVG11/feature#BasicStructure', '1.1');
  if (!supportsSVG) {

Ramon Torres - iOS developer/product designer

My name is Ramon Torres. I'm a software developer and product designer, currently working at Inkboard building cool stuff.