Swifty tool for visual testing iPhone and iPad apps. Every pixel counts.
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Swift 4.0 compatible Carthage compatible CocoaPods compatible Platform iOS License: MIT

Cribble - a tool for visual testing iPhone and iPad apps. Every pixel counts.


Getting Started

An example app is included demonstrating Cribble's functionality.


Simply add the following lines into your app delegate:

import Cribble

override func motionBegan(_ motion: UIEventSubtype, with event: UIEvent?) {
	guard motion == .motionShake else { return }

	Cribble.shared.hidden = !Cribble.shared.hidden

Shake a device and explore ui's roughness.

Custom options

You may want to use your own parameters for the grid. In that case simply use CribbleOptions:

let options = CribbleOptions(horizontalStep: 10, verticalStep: 10, opacity: 0.7, color: UIColor.red)
Cribble.shared.options = options



To integrate Cribble into your Xcode project using CocoaPods, specify it in your Podfile:

pod 'Cribble'


Add the line github "maxsokolov/cribble" to your Cartfile.


Clone the repo and drag files from Sources folder into your Xcode project.


  • iOS 8.0
  • Xcode 8.0

Original idea

This project has been driven by product designer Oleg Frolov. Check out his amazing Dribble.


Cribble is available under the MIT license. See LICENSE for details.