# Free Share of Voice Tool: Compare Brands on Social > Free share of voice tool. Compare your brand with up to 3 competitors across X, TikTok, YouTube, Instagram and news: share of posts, engagement, channels and themes. Canonical: https://www.getsift.ai/tools/share-of-voice/ ## Free share of voice tool Compare your brand with up to 3 competitors across X, TikTok, YouTube, Instagram and news. See each brand's share of posts and engagement, how it splits by channel, which topics each brand owns, and how people feel about each one. - Competitive analysis - Brand benchmarking - Campaign comparison - Share of engagement [Example, Oatly vs Califia Farms vs Planet Oat, last 7 days Real data Oatly 70% of posts net +14 Califia Farms 12% of posts net +64 Planet Oat 18% of posts net +31 Brand news and business neutral Oat milk taste positive Coffee recipes positive Ingredients and health mixed **@ap811021**, TikTok, 18k engagements Thought @Starbucks added flaxseed to their oatmeal đŸ˜« #starbucks #foodcontamination #consumeralert #fyp #attentiontodetail Open the full example →Themes, every post, CSV](https://www.getsift.ai/tools/report/?example=oatly-vs-califia-vs-planet-oat) Searching About 30 seconds Each channel fills in as it answers. ## How it works **01** ### Add the brands Your brand first, then up to 3 competitors. **02** ### We read the public posts Every matching post on X is counted per brand. The most engaged posts are sorted into shared themes. **03** ### Open your comparison Share of voice, share of engagement, channels, themes and sentiment per brand. ## What is share of voice? Share of voice is the part of a conversation that belongs to your brand compared with your competitors. On social, it is usually your share of posts that mention any of the brands you compare. A rising share of voice usually comes before a rise in awareness and sales. ## How to use it **Benchmark against rivals** See who people talk about most this week, and on which channels. **Find the topics you own** Each theme shows which brand leads it, so you can see where you're strong and where you're missing. **Check a launch** Compare your share before and after a campaign, or against a competitor's launch. **Read the mood** Net sentiment per brand shows whether a bigger share is good news or a backlash. ## How it's measured We count every public post on X for each brand, then read the most engaged posts from X, TikTok, YouTube, Instagram and news. Share of voice is each brand's share of every matching post on X. Share of engagement uses likes, comments, shares, reposts and quotes. Themes are shared across all brands, so you can compare like for like. ## Questions ### How is share of voice calculated? Share of voice is one brand's posts on X divided by the posts for every brand you compare, times 100. We count every matching post on X, so the share is exact. The report also shows the share of engagements, the share on each channel and which brand leads each theme. ### Is this share of voice tool free? Yes. You need a work email to open the report, so we can send you the link. ### Which channels does it cover? Public posts on X, TikTok, YouTube and Instagram, plus news articles, over the last 7 or 30 days. ### How many competitors can I add? Up to 3, so 4 brands in one report. ### What if a brand name is a common word? Each post is checked against the brands you compare, and posts about something else with a similar name are dropped. Very common words can still pull in some unrelated posts, so a more specific name works best.