Share of voice (SOV)
Share of voice is how much of the conversation on a keyword belongs to you. In Apple Ads it is the strategic question behind impression share: who owns the paid visibility on the searches that matter to your app.
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Share of voice comes from brand advertising, where it once meant your share of all ad spend or airtime in a category. In App Store search the idea is simpler and more measurable: when people search for a term, how often is your ad the one they see? For Apple Ads, SOV is usually expressed through impressions, because impressions are what Apple reports for every advertiser on a search term.
How share of voice is calculated
For a single search term, that formula is exactly impression share. SOV becomes a distinct idea when you apply it to a set of terms, such as every search containing your brand, or every core category term, and track it over time against named competitors.
SOV vs impression share
| Impression share | Share of voice | |
|---|---|---|
| What it is | A reported metric | A strategic goal and way of reading the metric |
| Scope | One search term in one country or region | A keyword set, a market or a category |
| Source | Apple, per search term | Built from impression share, rank and your own grouping |
| Question it answers | How much of this term’s ad impressions did I get? | How much of the paid visibility that matters to us do we own? |
In practice many teams use the two terms interchangeably. Some also count organic results in their SOV, treating the top ad and the top organic result as two slots on the same screen. If you do, say so, because Apple’s impression share covers ads only.
Using SOV on brand keywords
Brand keywords are where share of voice matters most. People who type your app’s name already want it. If a competitor’s ad appears above your organic listing, some of those users install the other app, and you lose a subscriber you did not have to pay to find.
- Run a separate brand campaign with exact-match brand keywords, so its budget and bids are not diluted by generic terms.
- Watch share and rank on brand search terms. A drop usually means a new competitor is bidding on your name.
- Bid to keep a high share on your own brand. Brand taps are typically cheap and convert well, so defending them often pays back quickly.
- Check for cannibalization. Some brand ad installs would have come organically; compare total brand installs, not just paid ones, before and after changes.
SOV on category and competitor terms
Outside your brand, SOV works as a market map. Tracking share across your core category terms shows whether you are gaining or losing ground over time. On competitor names, a modest share is often enough to test whether their searchers convert for you before you commit more budget.
Related terms: impression share, the per-term metric behind SOV; search popularity for how big each term is; and discovery campaign for finding new terms to compete on.