KillBiller is accurate and easy to use. Tap a few buttons and it will do all the hard work for you.

Simple Results

Plans are ranked in order of average monthly cost based on your usage.



Find your perfect plan by filtering your results by network, contract length, mobile data allowance etc.


Cost Breakdown

See a detailed breakdown of where a plan's cost really comes from.

Switch Plan

Switch to the plan of your choosing through the app.




KillBiller has saved me time and money finding a new plan for me. Thanks guys!
Amy, Google Play
Killbiller made me realise I could be on a cheaper plan to suit my usage. I have now switched and saved almost €15 per month!
David, Google Play
Excellent app, was renewing my mobile contract and it saved me a lot of time, money and effort by figuring out the exact cost of my usage across a load of plans and carriers, and recommending the best...plus it is free! What’s not to love?
Philip, Google Play


Mailing List

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We’re working hard to bring the technology to every phone in the country, and constantly improve the app with new features.

Sign up to receive news about our upcoming releases, or to help us test improvements to our app.

Emails will be kept to a minimum, we’ll only email about the things we think you’ll be interested in!