Apple Ads impression share: what it means and what to check

Apple Ads impression share tells you how often your ad appeared for a search term relative to searches for that term in the same country or region. Check the column name first: first-position share and all-position share describe different coverage.

A low number can justify investigating missed visibility. It doesn't tell you what that visibility would cost or whether the resulting users would pay.

First position and all positions

Apple's reporting definitions distinguish:

Keep the country, search term, date range and position scope with any number you save. Comparing first-position share this week with all-position share last week would create a misleading trend.

Percentages and ranges

Apple's reporting definitions specify exact percentages from 0% through 90%, followed by a 91-100% range. Its Recommendations help page still describes ranges and gives an 11-20% example.

Those pages don't describe the display in the same way. Preserve the value and format your report actually shows. If a saved report says 11-20%, don't replace it with 15.5% and compare that invented midpoint with a later exact value.

For a reporting change, mark the transition in your history. Keep the original exported values available so another person can reproduce the comparison.

Where to find the report

Open Insights from an Apple Ads dashboard and choose a predefined Impression Share report. Apple's Insights guide explains the setup and notes that these reports cover the last 12 weeks. Impression share also appears in Recommendations.

Save the report regularly if you need a longer history. Include the metric's full name in your export rather than shortening every share column to "IS".

Read share alongside rank and popularity

Apple's reporting definitions show impression-share rank as 1 through 5 or greater than 5, and search popularity as 1 through 5. Rank compares your share with other apps; popularity adds demand context. Neither is your organic App Store keyword position.

Consider these hypothetical situations:

Apple's Recommendations guidance specifically notes that low share with a high rank can occur when many advertisers bid on a keyword. The other rows are diagnostic prompts, not predicted outcomes.

Check the economics before raising a bid

Start with a keyword's mature results. If its users haven't had time to finish a trial, record the pending outcome and set a review date. The ROAS guide explains how to compare equally aged cohorts.

For a keyword already meeting your acquisition target:

1. Confirm the search term, country and position scope.
2. Check whether delivery is limited by the budget or audience settings.
3. Review conversion and revenue alongside the current bid.
4. Change one variable, then measure the added spend and outcome.

Apple's manual-bidding guidance recommends incremental bid adjustments informed by performance. A keyword that loses money at its current cost needs diagnosis before you buy more exposure.

For example, suppose a mature cohort meets your target and its first-position share is 18%. Record both facts before testing a bid change. After the next cohort has reached the same age, compare acquisition costs and revenue as well as share. Reaching 25% share would be a delivery change; you still need the economics to decide whether to keep it.

Use the bidding decision guide when the evidence points to raising, holding, lowering or pausing a keyword.

Sources

• Apple Ads reporting definitions
• Apple Ads Recommendations
• Apple Ads Insights
• Apple Ads manual bidding