An interstitial is an image that covers the entire mobile screen at about 320 x 480 pixels. This is the most popular size as it allows for more content, calls to action, and more creative content like videos, archives, location, and more.
Here are some interlaced ad sizes you can refer to:
This allows you to encourage more participation to increase the SAR (specific absorption index) for better performance and brand recognition.
Typically, interstitials appear at critical times during navigation, such as opening, browsing, or between games. It requires user action; often click a button to close an ad or swipe to navigate to the desired content.
Interstitial ads are a straight-from-web ad format that fits perfectly on mobile devices. Its ability is to grab the user's attention; The full-screen display on mobile phones, in particular, is very appealing to advertisers. You don't have to worry about click errors, as it only appears between pages while an app is in use. 
Advertisers can create beautiful and engaging content with high-quality artwork and compelling copies. This can reduce the factor of disruption for the user.
According to many experts, interstitials are best placed in level games. A natural breakout in gameplay across levels allows interstitials to appear relevant. Do not interrupt the user experience. Therefore, publishers should not push interstitial ads in between games. Interstitial has been reported as well. InMobi interstitials have 2-3 times higher clickthrough rates than banner ads. Most interstitials are very high.
Advantages:
- More space
- Messages, the content displayed and wider storage rates
- Intuitive visual appeal
- High impression
- High conversion rate
- Can provide interactive multimedia content and animation
Disadvantages:
- Need to invest time and effort in designing and integrating into the right location
- High CTR can result from the wrong click when the ad is turned off
- Can be irritating - in the event of an improper appearance.
Hope this post is useful for you and hope you have a nice day!
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