I normally prefer online tools because I don't want another app taking up space on my phone. When I need something, I can just open a browser and use SnapTik service. I find that approach convenient when I only need to download something occasionally. Apps probably make more sense for people who use these tools frequently and like having everything in one place. Another difference I've noticed is that apps may offer additional settings, while browser tools tend to keep things more straightforward. For me, the choice mostly depends on how often I need the downloader.