Daily Cap

What is Daily Cap?

The Daily Cap (also called Daily Budget) is the maximum amount an Apple Search Ads campaign will spend in a single calendar day (in the storefront’s local timezone). When spend reaches the cap:

• The campaign pauses for the remainder of the day
• It resumes automatically at midnight local time
• Impressions and taps stop until then

Every Apple Search Ads campaign must have a Daily Cap. You set it when creating the campaign and can edit it any time.

Daily Cap vs Lifetime Budget

Two distinct budget tools:

Setting	What it bounds	When you’d use it
Daily Cap	Spend per calendar day	Always-on campaigns, sustained acquisition
Lifetime Budget	Total spend across the campaign’s full duration	Time-bounded promotions, fixed budgets

Both can be set on the same campaign. The campaign pauses when either limit hits.

How Apple paces spend within a day

By default, Apple Search Ads uses smooth pacing: it spreads your Daily Cap across the entire day rather than spending the full cap in the first 2 hours. This means:

• Your campaign may under-pace in the morning if the auction sees few queries
• Apple catches up during the day by raising effective bids when more queries arrive
• High-traffic days (weekends, evenings) consume more of the cap than slow mornings

You cannot disable smooth pacing. The closest control is day-parting at the ad group level — restricting impressions to specific hours.

Day-parting

Apple Search Ads supports schedule constraints at the ad group level (not campaign level). You can specify which days of the week and which hour ranges the ad group is eligible to serve.

Day-parting use cases:

• Restrict Today Tab campaigns to evenings when engagement is highest
• Pause weekends for B2B apps with weekday user patterns
• Concentrate spend during holiday promotion windows
• Avoid late-night impressions if attribution data shows poor CR after 11pm

Day-parting changes the cadence within the Daily Cap — it does not change the cap itself.

Common pacing failure modes

Under-pacing

The campaign spent only 40-60% of Daily Cap consistently. Causes:

• Keywords have low query volume in your storefront
• Your bid is below floor on most active keywords
• Apple’s relevance scoring is suppressing impressions
• Search Match is disabled and your keyword list is too narrow

Fix: Either lower Daily Cap (don’t promise more budget than the auction can absorb) or expand keyword coverage / raise bids / enable Search Match.

Over-pacing (hitting cap early)

The campaign hits Daily Cap by mid-day and pauses for the rest. Causes:

• Bids are too aggressive — winning every auction at high CPT
• A new high-CR keyword cluster suddenly converts and Apple shifts spend toward it
• Promotional creative drives elevated TTR

Fix: Either raise Daily Cap (if economics support it) or lower bids to pace more evenly across the day.

Spend acceleration (anomaly)

The campaign suddenly burns 2-3× normal pace overnight. Causes:

• A competitor exits the auction; you win more impressions at the floor
• Search Match found new high-volume terms
• A creative refresh briefly lifted TTR

Fix: Investigate immediately. This is the most dangerous pattern — sometimes legitimate opportunity, sometimes runaway waste.

How ASAPilot helps

ASAPilot’s Budget Guard tracks pacing in near-real-time:

• Compares actual pacing to a 14-day rolling baseline
• Alerts on >2σ deviation in either direction (over-pacing or under-pacing)
• Recommends Daily Cap adjustments based on observed pacing patterns
• Flags campaigns that hit cap >5 days in a row (likely under-budgeted)

See budget pacing guide and pricing.

Related terms

• Lifetime Budget — the other budget bound
• Apple Search Ads — the platform
• CPI — what pacing efficiency affects most