Grow your ecommerce store · Ads · 2 min read
Do Facebook Ads Still Work After iOS 14?
Short answer
Yes, Facebook and Instagram ads still work for many ecommerce brands, but Apple's App Tracking Transparency (introduced with iOS 14.5) reduced tracking and made reporting less precise. Brands that adapted use the Conversions API, broader targeting, strong creative, and measure results with blended metrics and incrementality tests.
When Apple released App Tracking Transparency (ATT) in 2021, many advertisers saw rising costs and messy reporting. Years later, Meta ads remain one of the biggest acquisition channels for ecommerce. What changed is how you run and measure them.
What ATT changed
- Less tracking data from iOS users who opted out.
- Shorter attribution windows and modelled conversions.
- Smaller retargeting audiences.
- Less precise interest targeting.
What works now
Strong creative
With less precise targeting, the ad itself does more of the targeting work. Test many angles, hooks and formats. Video, UGC-style content and clear product demos tend to do well.
Broad targeting and Advantage+
Meta's machine learning often finds buyers better with broad audiences. Advantage+ shopping campaigns automate much of the targeting and placement.
Conversions API
Send purchase and other events server-side. On Shopify, the Facebook & Instagram app can enable this with maximum data sharing.
Good event setup
Verify your domain in Business Manager and make sure purchase events fire correctly with values.
Strong offer and landing page
Ads cannot overcome a weak product page or uncompetitive offer.
Measuring results
| Metric | Why |
|---|---|
| Ads Manager ROAS | Directional, uses modelled data |
| Blended ROAS (MER) | Total revenue รท total ad spend |
| New customer acquisition cost | Are ads bringing new buyers? |
| Lift or holdout tests | Measure true incremental impact |
| Post-purchase surveys | "How did you hear about us?" |
A practical setup checklist
- Domain verification in Meta Business Manager.
- Pixel installed through your platform's official integration.
- Conversions API enabled with good event match quality (sending hashed email or phone where customers consented helps matching).
- Event deduplication so browser and server events are not double-counted.
- Purchase value and currency passed with every purchase event.
- UTM parameters on ad links so analytics tools can attribute sessions.
Check Events Manager regularly for warnings about missing parameters or event drops.
Reading the numbers after ATT
Because some conversions are modelled or delayed, Ads Manager numbers can shift after the fact. Practical habits:
- Wait a few days before judging yesterday's performance.
- Compare Meta-reported purchases with orders in Shopify for the same period to understand the gap.
- Track a blended metric, such as total revenue divided by total marketing spend, week to week.
- Ask new customers "How did you hear about us?" at checkout or in a post-purchase survey.
Testing incrementality on a small budget
You do not need an enterprise budget to sanity-check results. Options include:
- Geo tests: pause ads in a few regions and compare sales against similar regions.
- On/off tests: turn spend down for a set period and watch total sales (accounting for seasonality).
- Meta's lift studies where eligible for your account.
These are rough, but they help answer the question that matters: would these sales have happened without the ads?
What changed for retargeting
Retargeting pools are smaller than before, so many brands now spend most of their budget on prospecting and rely on email and SMS to follow up. That shift often improves results anyway, because owned channels are cheaper than paying again to reach the same visitor.
Should you still use Facebook ads?
For many consumer products, yes. Start small, build creative testing into your routine, and judge results by your overall business numbers. Read do Facebook ads work for ecommerce, the ecommerce Facebook ads strategy anyone can use and link clicks vs landing page views.
Frequently asked questions
What changed with iOS 14?
Apple required apps to ask permission to track users across other apps and websites. Many users declined, so Meta received less data for targeting and attribution.
What is the Conversions API?
A server-side way to send conversion events from your website or store to Meta, which helps fill gaps left by browser tracking. Shopify's Facebook & Instagram app can set it up.
How should I measure Facebook ads now?
Use Ads Manager results as a guide, but also track blended metrics like total revenue divided by total ad spend, new customer counts, and run holdout or lift tests when budgets allow.
Sources and further reading
Platform features, prices and policies change. Check the official help pages linked above before you act on a detail that matters to your store.