Before launch

Check your study on every device before launch

Lock your protocol and we run it, with your settings and languages, on the computers, tablets and phones participants use. The report shows which devices can take it, the message the others see, and every test's screens on each device.

See a sample report

One report before the first participant

Computer, tablet and phone setups: 23
iPhones and iPads in Apple's own Safari: 5
Tests it can check: 547

Who can take it: Each setup: runs, or stopped before consent with the exact message the participant sees, and the test that stops it.
Every screen: Each test of your protocol on each setup that can take it, from its first screen to its answers.
Fit and taps: Screens cut off or scrolling sideways, and buttons smaller than a fingertip, flagged by test and setup.
Your version: Tied to the protocol version you locked, with the date. An edit marks it out of date. Ready for your ethics board or sponsor.

A sample report

Four tests, one of them timed, on six of the setups. Every result below is the device check run on that protocol; the screens are each test on that setup. See every setup on the tested devices page.

Sample protocol: Corsi Block-Tapping Test, Matrix Reasoning, Tower of Hanoi, Choice Reaction Time

6 of the 23 setups

Windows laptop with a mouse
Chrome
Runs all 4 tests
- Corsi Block-Tapping Test
- Matrix Reasoning
- Tower of Hanoi
- Choice Reaction Time
Mac with a trackpad
Safari
Runs all 4 tests
- Corsi Block-Tapping Test
- Matrix Reasoning
- Tower of Hanoi
- Choice Reaction Time
iPad
Safari
Stopped before consent
“This study includes timed tasks, which run only on a desktop or laptop computer with a mouse or trackpad. Open this link on a computer.”
Stopped by Choice Reaction Time, a timed test. Without it, the other 3 run here.
Android tablet
Chrome
Stopped before consent
“This study includes timed tasks, which run only on a desktop or laptop computer with a mouse or trackpad. Open this link on a computer.”
Stopped by Choice Reaction Time, a timed test. Without it, the other 3 run here.
iPhone
Safari
Stopped before consent
“This study includes timed tasks, which run only on a desktop or laptop computer with a mouse or trackpad. Open this link on a computer.”
Stopped by Choice Reaction Time, a timed test. Without it, the other 3 run here.
Android phone
Chrome
Stopped before consent
“This study includes timed tasks, which run only on a desktop or laptop computer with a mouse or trackpad. Open this link on a computer.”
Stopped by Choice Reaction Time, a timed test. Without it, the other 3 run here.

Common questions

What is a device check before launch?

Before the first participant joins, your locked protocol runs on 23 device setups and in Apple's own Safari on 5 iPhones and iPads. You get one report of which devices can take it, what the others see, and each test's screens.

Which devices does it check?

6 computers (Windows with Chrome and Edge, Mac with Safari, a Chromebook), 9 tablets (iPads from the mini to the Pro, Android and Fire tablets) and 8 phones (iPhones from the SE to the Pro Max, Android phones in Chrome and Samsung Internet, a foldable), with iPhone SE, iPhone 17, iPhone 17 Pro Max, iPad mini, iPad Pro 11-inch in Apple's iOS Simulator.

Does it check response-time accuracy on phones?

No. A simulator has no touchscreen, so no simulator can measure the delay between a finger and the screen. Timed tests run on computers with a mouse or trackpad, and on a tablet or phone only once that kind of device has passed our timing check with a camera.

How do I get one?

It comes with yearly plans. Lock your protocol, then ask for a device check with the study's name. We run it on your protocol as it is, with your settings and languages, and send you the report.

Launch on the devices your participants use

Start free