Yahoo is making good progress with its mobile apps, according to CEO Marissa Mayer, with usage of recently-launched titles increasing strongly.

The Yahoo App for iOS and Android, which integrated technology from $30 million acquisition Summly, has seen a 55 per cent increase in daily active users and a 60 per cent increase in usage time since its launch in April.

Emphasising Yahoo’s new focus on mobile, Mayer pointed out that it took just four weeks for developers to integrate the Summly news reading technology into the Yahoo App.

The new version of Yahoo Weather, which integrates imagery from Flickr, has seen usage increase 150 per cent since its launch (also in April) and is now the number one iOS weather app in 23 countries.

In addition, the relaunched Yahoo Mail, now optimised for mobile and tablets, has seen daily active users increase by 120 per cent.

Back in October 2012, Mayer emphasised the need for Yahoo to have a more cohesive mobile strategy compared to the “previously fragmented and unfocused products”.

Since then the company has increased the size of its mobile team six-fold through recruitment and acquisitions, while monthly mobile users passed 340 million in June.