Bigger desktop baskets and more mobile orders can coexist. What matters for your ad budget is what each device earns after costs.
Desktop customers often spend more per order. Mobile customers often place more of them. Which device deserves more of your advertising budget?
Neither number answers that question on its own. Apparel brands should not raise desktop bids simply because desktop AOV is higher. Compare conversion performance, acquisition costs, margins, and returns within your own store, then check which device controls your campaigns actually support.
The public evidence gives you context. Metorik’s WooCommerce analysis shows larger desktop baskets alongside a mobile-heavy order mix. Adobe reports that smartphones drove a majority of U.S. online holiday spending in 2025. Neither finding establishes the most profitable device for your clothing store.
Before changing a bid, separate two questions: what is happening to your orders, and what are you paying to acquire them?
Key takeaways
- A higher desktop AOV does not automatically justify a higher desktop bid. Acquisition costs, margins, and returns can change the decision.
- A falling storewide AOV can reflect a growing share of smaller mobile orders even when basket sizes on each device remain unchanged.
- Benchmarks describe specific markets, platforms, and time periods. A WooCommerce device average is not an apparel industry standard.
- Revenue per session helps compare sales performance. Profitability requires costs as well.
- Google Smart Bidding generally does not support ordinary manual device bid modifiers. Review your campaign type and bid strategy before making adjustments.
Why can blended AOV fall when customers are spending the same amount?
Imagine an apparel store where desktop orders average $200 and mobile orders average $140. Neither figure changes.
The only change is where orders happen:
| Metric | Earlier period | Later period |
|---|---|---|
| Desktop AOV | $200 | $200 |
| Mobile AOV | $140 | $140 |
| Mobile share of orders | 60% | 70% |
| Desktop share of orders | 40% | 30% |
| Blended AOV | $164 | $158 |
Hypothetical example. Blended AOV is weighted by each device’s share of orders.
Your dashboard shows a $6 decline. But shoppers on each device are spending exactly as much per order as before.
That distinction changes what you investigate. Before adding a discount, raising a free-shipping threshold, or rebuilding your bundles, check whether baskets actually became smaller or whether the mix of orders changed.
It also works in the other direction. A growing mobile order share does not automatically mean mobile deserves more ad spend. You still need to know how those orders were acquired and what they contributed after costs.
For apparel, examine product mix too. If mobile orders contain more accessories and desktop orders contain more outerwear, part of the device gap may reflect the products being purchased. The device report tells you where to look; the product report helps explain what you find.
What do mobile vs desktop eCommerce benchmarks actually show?
Desktop baskets are larger in Metorik’s WooCommerce sample
Metorik’s June 2026 article reports the following split for 2025, drawing on an analysis of more than 65 million orders across 6,000-plus WooCommerce stores:
| Device group | Share of orders | Average order value |
|---|---|---|
| Mobile and tablet | 72% | $71 |
| Desktop | 28% | $167 |
Desktop AOV was approximately 2.35 times the mobile-and-tablet figure. Metorik also reports a smaller U.S. gap: $190 desktop versus $139 mobile, or approximately 1.37 times.
These are platform-specific findings across categories. They do not establish a normal AOV gap for apparel, Shopify stores, or your market. The grouped mobile-and-tablet figure should also stay grouped when you cite it.
Mobile accounted for a majority of U.S. holiday spending
Adobe reports that smartphones drove 56.4% of U.S. online spending during November and December 2025, up from 54.5% in the previous holiday season. Total online spending reached $257.8 billion.
This measures spending share during a specific U.S. retail period. It is not a worldwide apparel order-share benchmark, and it does not tell you mobile AOV.
Conversion performance depends on the comparison
Contentsquare’s 2026 benchmark reports that desktop conversion was 74% higher than mobile across its measured sites. Its broader analysis draws on 99 billion web and app sessions across more than 6,000 sites.
That is useful context, but it is not a prediction for your apparel store. Check whether a benchmark covers purchases or other conversion actions, and whether its denominator is sessions or users, before comparing it with your reports.
Taken together, these sources show why larger desktop baskets and strong mobile sales can coexist. They do not provide a universal percentage by which an apparel brand should increase or decrease bids.
Why higher revenue per session can still mean lower profit
AOV measures revenue per order. It leaves out the visits that never turn into purchases.
Revenue per session brings those visits into the comparison:
Revenue per session = revenue ÷ sessions
Use the same revenue definition and reporting period for each device. You can also calculate it as orders per session multiplied by AOV when those inputs use matching definitions. A user-based conversion rate or a rate covering non-purchase events will not give the same result.
Revenue per session is still only part of the bidding decision. Consider two hypothetical paid-traffic segments:
| Metric | Desktop | Mobile |
|---|---|---|
| Revenue per session | $5.00 | $3.00 |
| Contribution before ads, assuming 60% remains after variable costs | $3.00 | $1.80 |
| Advertising cost per session | $4.00 | $1.00 |
| Contribution after advertising per session | −$1.00 | $0.80 |
Illustration only, not a benchmark. Both segments use the same assumed contribution percentage and exclude fixed overhead.
Desktop generates more revenue per visit. Mobile leaves more money after advertising in this example.
In an apparel store, that comparison should account for product cost, discounts, fulfillment, payment fees, and returns where the data allows. Be consistent: do not subtract refunded revenue twice if your revenue figure already reflects it.
Historical profitability also does not guarantee that the next increase in spend will perform the same way. Use it to identify a test, then measure what changes as spend grows.
Do device bid adjustments still work with Google Smart Bidding?
Before recommending a desktop premium, check whether the campaign will use it.
Google says ordinary manual bid adjustments are not supported under Smart Bidding strategies including Target CPA, Target ROAS, Maximize conversions, and Maximize conversion value. Its documentation identifies specific exceptions and distinguishes bid-strategy support from campaign-type eligibility:
| Google Ads setup | How to interpret device adjustments |
|---|---|
| Eligible campaigns using manual bidding or Maximize clicks | Device modifiers can affect bids where supported. |
| Target CPA | Supported device adjustments change the CPA target, rather than directly multiplying bids. |
| Target ROAS, Maximize conversions, or Maximize conversion value | Ordinary positive or negative device modifiers are unsupported. Google’s strategy table lists −100% exclusions, subject to campaign eligibility. |
A campaign can have different eligibility from the general strategy table. Check both before applying an exclusion or trying to split campaigns by device.
For automated campaigns, device reports remain useful. They can reveal missing purchase values, a checkout problem, or a product mix that deserves attention even when a manual modifier is unavailable. The Google rules above should not be applied to Meta campaigns; review the controls in each platform separately.
How can cross-device journeys distort the comparison?
A shopper might discover a jacket on a phone and finish the purchase on a laptop. A report grouped by checkout device can show a different picture from an advertising report that attributes the purchase to an earlier ad interaction.
Before comparing exports, establish what “device” means in each one. Is it the device used for the session, the ad interaction, or the purchase? Different answers can produce different device totals without a calculation error.
Google’s enhanced conversions supplement conversion measurement with hashed first-party customer data. They can improve measurement, but enabling them does not make every cross-device journey visible or align all your reporting systems automatically.
Use consistent attribution windows and allow for conversion lag. Where you cannot reconcile device-level advertising costs with store revenue, show the reports separately rather than presenting an uncertain profit estimate as an exact figure.
Six steps to audit device performance before changing spend
1. Choose a period that fits your store
Start with 90 days as a working view, then check whether each device has enough orders to support a useful comparison. Separate major promotions from ordinary trading and examine recent trends. A longer window may add volume but also mix different seasons, prices, or campaigns.
2. Build one consistent device report
Export sessions, orders, revenue, AOV, and purchase conversion rate by device from the same analytics source. Add advertising spend and attributed revenue from your ad platforms, keeping their attribution definitions visible. Calculate cost and contribution per session only where the records can be reconciled.
3. Check what customers actually bought
Split results by product category, price band, market, and new versus returning customers where volume permits. Check channel mix too: a device receiving mostly prospecting traffic should not be judged as if it received the same audience as one dominated by returning customers.
4. Include costs and allow time for returns
Compare contribution after advertising where reliable data is available. For apparel, let the purchase cohort age enough to capture a meaningful portion of returns. If returns cannot be linked to device, use a clearly labeled assumption and check whether a different return rate would change the decision.
5. Test the problem you can observe
If smaller mobile baskets coincide with a difficult bundle selector or an overlooked add-on, test that specific element. Options include clearer complete-the-outfit suggestions, larger size-selection controls, or a visible free-shipping progress indicator. Treat them as hypotheses and measure conversion, basket value, and returns together.
6. Change supported campaign controls and measure the result
Where device adjustments are available, test a measured change based on your own economics. With automation, prioritize accurate conversion values and clearly defined goals. Avoid changing bids, checkout, and promotions at the same time if you want to understand what drove the result. Evaluate once conversion lag, returns, and order volume make the result useful, rather than treating 30 days as a universal rule.
Frequently asked questions
The sources reviewed here do not establish that mobile AOV has overtaken desktop across apparel. Metorik’s broader WooCommerce sample shows larger desktop orders, but that is not an apparel-only result. Compare your own devices using the same period, revenue definition, and product segments before drawing a conclusion.
Only when their own performance supports it and the campaign allows the adjustment. Higher desktop AOV is insufficient evidence. Review acquisition costs, purchase conversion, margins, returns, and attribution. Then test the change, because historical averages do not guarantee that additional desktop spend will deliver the same return.
Storewide AOV is weighted by each device’s share of orders. If mobile has a lower AOV and its order share increases, the blended average falls even when mobile and desktop basket values remain constant. Check order mix before concluding that customers are buying less per order.
No. Revenue per session measures sales generated per visit, but excludes the cost of acquiring that visit and fulfilling the resulting orders. Use it alongside acquisition costs, margins, and returns. Where the data supports it, contribution after advertising is a more useful measure of historical profitability.
There is no universal conversion count or reporting period that makes every device comparison reliable. The answer depends on order-value variation, return timing, seasonality, and the size of the difference you are evaluating. Use comparable periods and check whether a few unusually large orders are driving the result.
What should change in your next device review?
Start with the blended-AOV example. A falling average might reflect a changing order mix. A larger desktop basket might come with a higher acquisition cost. More mobile orders might still contribute less after returns. Each calls for a different response.
Put device, product mix, and costs in the same review. Use benchmarks to prompt questions, then use your own evidence to decide what to test.
The device with the biggest basket does not automatically deserve the biggest budget.





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