If your site is bring-your-own-device, run the official device check on the same laptop you will carry in. A pass at home on a different machine does not count. Format choice is in digital or paper.
Same device, same setup
Charger, browser, and login should match test morning. Allowed items are in what to bring. Practice in the format you will sit, in practice in your test format.
Reading on a screen is its own habit, in Reading on a screen.
The bottom line
Check the device you will use. Do not swap laptops after a green check.
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
This article offers general ACT prep guidance. The ACT can change from year to year, including its format, scoring, policies, test dates, and fees, so always confirm the latest details on the official ACT website at act.org before you make decisions. ACT® is a registered trademark of ACT, Inc. thirty-six is not affiliated with, endorsed by, or sponsored by ACT.