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Getting started is now in open beta and is completely free! ๐Ÿฅณ
With just a few clicks, you can get an app start performance score, as explained below.

Alternatively you can use the flashlight cloud command to run your own custom tests via CLI.

Get your app start performance scoreโ€‹

Step 1โ€‹

Go to and upload your APK ๐Ÿ‘‡


Step 2โ€‹

To get your TTI (time to interactive), make sure to fill this field:


Basically, Flashlight will be able to know that the app is started when this text appears.


The text doesn't have to match your strings in its entirety.
For example if "Hello world" appears in your app, you can just pass "world"

Step 3โ€‹

After ~10min if there was no queue, you should receive your performance report by email ๐Ÿ’ฏ

In case of failure, you'll also receive a video, check the troubleshooting section to see common issues and how to deal with them.

Download APK from Play Storeโ€‹

You can download a universal APK that Flashlight can install on any device from the play store console by:

  • opening "App bundle explorer"
  • clicking any app version
  • on the "Downloads" tab, download the "Signed, universal APK"



You can use one of our example APKs: a small Twitter clone

The app looks like this when it has started, so you can just use "Dernier rappel" for the text field