Native Internet Speed Testing


– 100% native UI.
– Accurate and realistic download/upload speed tests.
– No browser or plugins required.
– Ad-free. Forever.
– Test data is fully encrypted and never transmitted over the network.
– Up to 3 tests per day for free.
– Share test results as text or screenshot using the built-in share menu.

Have questions about how it works? Check out our FAQ


If you have any issues using the app, please email support at or tweet at @speedsterapp.

What's New
  • Add menu item to start test (cmd + return).
  • Show test phase in the button (Download or Upload).
  • Fix a bug where the test button is stuck on "Preparing".
  • Remove unused menu items.
  • Improve focus ring look on buttons in order to match the design of the app.
  • Increase font size across the UI.
  • Add tooltip when ISP name is too long to fit in a single line.
  • Minor UI tweaks.

  • Speedster (co.kaishin.speedster) is a Mac software application that has been discovered and submitted by users of The latest version that our users have reported running on their systems is Speedster 193. The most popular version of this application used by our users is Speedster 2.1.1.

    Operating System: Mac

    Minimum OS version: 10.11

    Copyright: Copyright (c) 2015 Kaishin and Co. All rights reserved.