Mozilla is looking for beta testers for the iOS app version of its Firefox browser which should soon be available on the App Store, according to TechCrunch.

An ‘iOS Beta Program – Invitation Request’ was sent to potential testers which included a survey asking questions like “how would you describe you technical ability with iOS apps?” Users were also told they need to have iOS 8 and can expect “some bugs and breaks at times”.

Mozilla was reportedly not previously planning to release the app, saying Apple was stopping it from using its own web engine on the platform, but later admitted it is working towards a browser app with a “Firefox-like experience” for Apple users.

When it comes to browser apps, Apple’s Safari leads the way with 40 per cent market share while Google Chrome has 30 per cent, according to NetApplications.

In April, Mozilla saw two senior executives leave: Li Gong, who was president at the time, and Rick Fant, VP of planning and ecosystem, who had responsibility for “overall strategy discussion and product roadmap” for its Firefox mobile OS platform.

At the time of the departures Mozilla confirmed the authenticity of a leaked document which pointed to an increased marketing spend in Q2, designed to drive usage of the Firefox browser.