TubeBuddy and vidIQ dominate YouTube SEO because they're purpose-built browser extensions that live inside YouTube Studio. TubeBuddy edges ahead for keyword research with its search volume scores, tag suggestions, and rank tracking directly in the upload interface. vidIQ counters with stronger competitor channel analysis and trend alerts. Both cost $9-50/month depending on channel count and features. For keyword discovery outside these two, we use Google Keyword Planner and Ahrefs' YouTube search volume data. Ahrefs shows estimated search volume for YouTube-specific queries and can surface video opportunities your competitors rank for in Google's video carousel. This matters because 70% of YouTube traffic comes from suggested videos and search combined, so you need data on both YouTube's algorithm and Google's video preferences. Most creators waste money running multiple tools. Pick one core platform: TubeBuddy if you're optimizing 5+ videos weekly and need bulk tag updates or thumbnail A/B testing. vidIQ if you're analyzing what's working in your niche and want daily trend emails. We run TubeBuddy for clients publishing consistent content because the tag ranking tracker shows which videos are climbing or falling for target terms. The actual optimization work is simpler than SEO tool companies suggest. YouTube's algorithm prioritizes click-through rate and watch time over keyword density. Your tool should help you find search volume and competition levels, then get out of the way. We've seen channels grow faster by spending 20 minutes on keyword research with TubeBuddy's free tier than spending hours obsessing over paid analytics dashboards. One gap both tools have: neither predicts which topics will actually retain viewers past the first 30 seconds, which YouTube weighs heavily. For that, you're manually reviewing your YouTube Analytics retention graphs and testing different content angles. At Ottawa SEO, we combine TubeBuddy's keyword data with manual competitive analysis of the top 5 videos for each target term, noting their hooks, length, and thumbnail patterns before a client films anything.