Yes. All you need to initiate a research project (and subsequently view your final report online) is any standard web browser.
In fact, you can just call them on the phone – no computer or smartphone required.
You also receive your report in a printed format, so you don’t even need a computer to view the company’s findings.
By the way, Legacy Tree doesn’t have a proprietary mobile app – but you can access the site simply on your smart phone’s web browser.