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May 22, 2019
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Garry Barter's Blog


I'm the CEO of Hertzian (, the creators of Player XP & Critical Hit.

At Hertzian we specialise in finding key patterns in large quantities of user feedback through the use of Machine Learning & Natural Language Processing.

Our first public product, Player XP, aggregates over 40 million iTunes reviews from over 250,000 iOS games with the aim of helping game developers understand their players. By applying our advanced analytics technology, Player XP only shows you the reviews that contain constructive feedback allowing you to find the key actionable points of feedback quicker than ever before. To find out more about Player XP then head to

Hertzian are based in Cornwall, UK, which means that we can build our applications on the beach if we wanted (not that we do as it's a bit too cold). We all love games and when time allows, love nothing more than loading up Unity or UE for a quick game jam.

Before founding Hertzian I worked in London for a digital agency with a focus on building interactive content for children's TV shows. Yes, that means I can name every character from Peppa Pig...  


Member Blogs

Posted by Garry Barter on Wed, 16 Nov 2016 10:01:00 EST in Business/Marketing, Smartphone/Tablet
As part of our continued look at Octobers App Store activity, this blog takes a look at the geographic differences of the reviewers.

Posted by Garry Barter on Mon, 07 Nov 2016 09:08:00 EST in Business/Marketing, Smartphone/Tablet
As part of Player XP's review of it's systems, we have been able to pull out some key stats around the reviews we've collected over the course of October including most talked about subjects, top games and trending genres.