Updated Oct 10, 2026
Apple Ads bid optimization (Apple Ads was formerly called Apple Search Ads) means choosing a max cost-per-tap (max CPT) bid for each keyword so your cost per install and cost per acquisition stay under target. The formula behind every decision is simple: CPI = CPT ÷ CR. If CPI is too high, either you pay too much per tap or too few taps turn into installs, and each has a different fix.
Most accounts get managed by gut feel: "this keyword is expensive, lower the bid." Sometimes that works. Often it skips the diagnosis. A keyword can be expensive because the bid is high, because the ad isn't earning taps, or because taps aren't turning into installs. This guide shows you how to tell which, how to set a sensible starting bid, and when to move it.
Use this five-step loop for Manage Bids search results campaigns:
A max CPT bid is the most you're willing to pay when someone taps your ad in a Manage Bids campaign. Apple treats it as a price ceiling: you never pay more, and often pay less. You set a default max CPT per ad group and can override it for individual keywords. (Apple: Set and Adjust Bids)
What's the difference between CPT, average CPT and max CPT bid? CPT (cost per tap) is what you actually pay for one tap. Average CPT is total spend divided by taps over a period, the number you see in reporting. Max CPT bid is the ceiling you set. Your average CPT sits at or below your max CPT bid, often well below it.
In practice:
| Term | What it is | Where you see it |
|---|---|---|
| CPT | The price paid for a single tap | Implied in spend |
| Average CPT (Avg CPT) | Spend ÷ taps for a period | Campaign, ad group and keyword reports |
| Max CPT bid | The most you'll pay per tap | Ad group default bid or keyword bid |
Do I pay my full max CPT bid? Usually not. Apple describes the price you pay as set by a dynamic pricing mechanism that weighs ad relevance, your bid, other advertisers' bids, user experience and any reserve price. Your max CPT is only the ceiling, so the actual charge per tap is often lower than the bid you set. (Apple: Set and Adjust Bids)
That's why a bid increase doesn't automatically raise your average CPT by the same amount. It mostly raises the ceiling on the auctions you can win.
Each ad group has a default max CPT bid that applies to every keyword in it. When you set a bid on a specific keyword, that keyword bid overrides the ad group default for that keyword only. New keywords added later still pick up the ad group default. (Apple: Considerations for keyword bids)
A practical habit: keep the ad group default conservative, then set explicit keyword bids on the terms you have data for. That way a new keyword can't quietly inherit an aggressive bid.
Multiply the most you can afford per install by the share of tappers you expect to install. Apple's own example: if a new customer is worth spending $2.50 and you expect 40% of tappers to download, your starting max CPT is $1.00. Then refine from real CR data once keywords collect taps. (Apple: Set and Adjust Bids)
Written as a formula:
Starting max CPT = affordable cost per install × expected CR (tap-to-install)
The hard part is the "affordable" number. For a subscription app, work back from revenue, not from what feels cheap:
Illustrative only: if a paying user brings in $20 in year one and 5% of installs become paying users, each install is worth about $1.00. Pay $0.70 per install and you keep a buffer. At an expected 40% CR, that's a starting max CPT of roughly $0.28. These numbers are made up to show the arithmetic. Use your own.
Apple also shows a suggested max CPT when you create a campaign or ad group, based on what similar advertisers pay. Treat it as a reference point, not a target. (Apple: Manual Bidding best practices)
CPI equals CPT divided by CR, where CR is the share of taps that become installs. In Apple Ads reporting, cost per tap-through install appears as average CPA, so for an install goal CPI and CPA describe the same cost. To push CPI down, lower what you pay per tap or raise the share of taps that install.
Each side has its own lever:
That's why a keyword can have a strong TTR (people tap) and a poor CR (they don't install). The ad promised something the product page didn't deliver.
One more layer matters for subscription apps: an install isn't revenue. Your true cost per paying customer is CPI ÷ install-to-paid rate, and that last number lives in your subscription data, not in Apple Ads.
Enter a cost per tap and a conversion rate to see your resulting cost per install.
Resulting cost per install (CPI): $1.80
Apple recommends a tiered bidding strategy across ad groups: the most aggressive bids on your important exact match keywords, strong bids on similar keywords in broad match, and more moderate bids on the new queries Search Match discovers. Apple also advises that most of your traffic should come from exact match and that broad and exact keywords live in separate ad groups or campaigns so you can manage their bids independently. (Apple: Manual Bidding best practices; Apple: Considerations for keyword bids)
| Match type | What it does | Bid posture |
|---|---|---|
| Exact match | Matches the term and close variants (spelling, word order, some translations) | Most aggressive. These are your proven performers. |
| Broad match | Matches a wider pool of related searches | Moderate. Built for discovery. |
| Search Match | Matches your ad to relevant searches automatically, with no keywords needed | Moderate to low. Use it to mine new terms. |
Apple's match-type definitions: Understand Match Types. For full campaign layout (brand, category, competitor, discovery) and negative keywords, see our Apple Search Ads campaign structure guide.
Raise a bid when a keyword converts below your target CPA or when a relevant popular keyword gets few impressions, which suggests you're being outbid. Lower it when a keyword earns taps but few installs and its CPA sits above target. Change bids in small steps and give each change enough data before judging it. (Apple)
Use this decision table before touching any bid:
| What you see | Likely cause | Action |
|---|---|---|
| CPA under target, decent volume | Room to grow | Raise the bid in small steps; watch CPA |
| Relevant keyword, very few impressions | Outbid | Raise the bid; check Apple's recommended bid |
| Search Match finds terms that convert | Discovery working | Promote those terms to exact match; consider a higher Search Match bid |
| Low TTR vs your other keywords | Ad relevance or creative problem | Don't raise the bid first; check keyword relevance and the ad/custom product page |
| Healthy TTR, low CR, CPA above target | Product page mismatch | Fix the page (custom product page) before cutting the bid |
| Healthy TTR and CR, but CPA above target | CPT genuinely too high | Lower the bid; this is the case a bid cut is for |
| Too few taps to judge | Not enough data | Wait; don't change daily |
Apple offers two strategies for search results campaigns:
Target CPA is an average, not a ceiling. Apple says your CPA may land above or below target on a given day while the system aims to meet it on average, and your daily budget controls overall spend. Apple has also said CPA caps are being phased out in favor of target CPA. (Apple: Maximize Conversions best practices)
Start with Manage Bids if you want to learn which keywords make money, since you see and control each bid. Try Maximize Conversions once you know a realistic target CPA from your own data and prefer less hands-on work. You can run both, but keep the target grounded in real conversion and revenue numbers, not a guess.
Not every keyword deserves the same bid logic:
One blanket max CPT across all three ignores that they have different economics. Put them in separate campaigns or ad groups so each can have its own bid and budget.
Taps without installs usually means the product page doesn't match what the search implied. The ad earned interest, but screenshots, subtitle or ratings didn't convince. Check CR first. If CR is low while TTR is healthy, fix the page or send that keyword to a matching custom product page before you cut the bid.
Pull each problem keyword's TTR and CR separately:
"MetroTransit," a transit-navigation app, reviews three keywords against a $3.00 target CPA. These numbers are illustrative, chosen to show the diagnostic process. They are not real or benchmark data.
| Keyword | CPT | TTR | CR | CPI (CPT ÷ CR) | Diagnosis |
|---|---|---|---|---|---|
| "subway map" | $0.85 | 11% | 60% | $1.42 | Healthy and under target. Candidate for a small bid raise. |
| "bus tracker live" | $0.80 | 4% | 55% | $1.45 | Low TTR. A relevance or ad issue, not a bid problem. |
| "transit app free" | $0.75 | 10% | 18% | $4.17 | Low CR. Product page mismatch; try a targeted custom product page. |
Notice that the most "expensive" keyword has the lowest CPT. Cutting its bid would make it cheaper per tap and still leave CPI above target.
Apple shows recommended bids in the Max CPT Bid column of the All Keywords dashboard and on a dedicated Recommendations page. Each recommendation comes with context, including impression share, rank (1 to 5, or more than 5), search popularity (1 to 5, with 5 most popular), and seven-day estimates of installs, spend and average CPA. (Apple: Review Recommendations; Apple: Manual Bidding best practices)
How to use them without overspending:
Custom product pages are alternate versions of your product page with different screenshots, app previews and promotional text, each with its own URL. In Apple Ads you can align ads with custom product pages, so an ad group can send searchers to a page built for their intent. (Apple: Creating your product page; Apple: Compare solutions)
This is the most direct fix for a keyword with good TTR and poor CR. Instead of one page serving every intent, someone searching "budget app for freelancers" lands on a page about freelancer budgeting. Because CR is a separate lever in CPI = CPT ÷ CR, a better-matched page lowers your cost per install without touching the bid. That's often more durable than chasing a lower CPT in an auction your competitors also bid in. See the custom product pages and in-app events playbook.
Early on, before keywords have enough taps to judge TTR and CR, run discovery with modest bids and accept a higher blended CPA while you collect signal. As data builds, shift budget toward keywords with proven TTR and CR, hold bids on keywords with a known relevance or page problem until it's fixed, and pause keywords that stay poor on both with no clear fix.
Run this checklist on a fixed schedule. Auctions shift as competitors change bids and as seasonality changes what people search for, so accounts drift without regular review. A monthly deep review plus a lighter weekly check on high-spend keywords suits most indie budgets.
Every review:
GROWNX pulls your App Store Connect and RevenueCat data into one dashboard, so you can check whether paid installs actually turn into revenue, not just CPA. Free plan available.
There's no universal good CPT. It depends on the keyword, country and category, and it changes as competitors adjust bids. Work backwards instead: decide the CPA you can afford from your revenue data, multiply by your expected tap-to-install rate, and that gives you a CPT you can sustain.
Yes. Apple says a max CPT bid set on a specific keyword overrides the ad group's default max CPT bid for that keyword. The ad group default still applies to any new keywords you add to that ad group later.
Yes. Apple renamed Apple Search Ads to Apple Ads in April 2025, because ads now run in several App Store placements beyond search results. Bids, keywords and reporting work the same way. Many people still search for "Apple Search Ads," so you'll see both names.
No. Maximize Conversions campaigns use Apple's auto-bidder against your target CPA, and Apple says you can't add or manage keyword bids in them. If you want to set max CPT bids yourself, create a Manage Bids search results campaign instead.
Review on a fixed cadence, such as a monthly deep review and a weekly check on high-spend keywords. Avoid daily changes on keywords with little data, since a handful of taps can swing CR wildly. Change bids in small steps so you can see what each change did.
CR is conversion rate: the share of ad taps that turn into installs. It's the denominator in CPI = CPT ÷ CR. A low CR with a healthy tap-through rate usually points to a product page that doesn't match what the searcher expected.
Sources (Apple): Set and Adjust Bids · Considerations for keyword bids · Manual Bidding best practices · Use Maximize Conversions · Maximize Conversions best practices · Review Recommendations · Understand Match Types · Apple Ads news: Apple Search Ads is now Apple Ads. Apple's interface and terms change; check the linked docs before acting on any detail.
Get more guides like this
One email when a new ASO guide ships. No spam, unsubscribe anytime.