A Quartile alternative that optimises your profitwith governed AI and EU depth.
Quartile automates Amazon advertising to chase ACOS. Epinium is a European platform that optimises your profit — every AI action reviewed and approved by your team before it goes live, listings tuned to rank in AI shopping assistants, and margin (not vanity ACOS) as the goal.
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AI drafting your change — waiting for your approval…
★★★★★
Short answer
Epinium vs Quartile: the short answer
Quartile is a retail media optimisation platform: it automates advertising across Amazon Ads, Amazon DSP, Walmart, Instacart, Criteo, Google and Meta, and reports on ROAS. Epinium is a European platform that goes past advertising — AI proposes changes to bids, listings and stock, your team approves each one before it reaches Amazon, listings are optimised to rank in Rufus and other AI assistants, and a P&L per ASIN with fees, advertising and product cost shows contribution margin, not just the ad ratio. Pick Quartile for multi-channel ad breadth; pick Epinium for governed execution, EU depth and profit.
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Choose Quartile if…
Your priority is one ad console across retail media and D2C at once — Amazon DSP, Walmart, Instacart, Criteo, Google, Meta and Microsoft Ads.
You want a managed-service feel: Quartile pairs the platform with a dedicated account team on every plan.
Advertising is the only workflow you need to centralise — listings, catalogue and stock stay with other tools.
Choose Epinium if…
You will not let AI touch your account unsupervised: every change waits in an approval queue with a full audit trail.
You sell across Amazon EU (ES, IT, DE, FR, UK) and want localised keyword data plus EU data residency and AI Act alignment.
You measure success in margin, not ACOS — and you want listings ready for Rufus and other AI shopping assistants.
Human approval (HITL) & audit trailWhether AI acts on your account before a person signs off
Yes — approval queue, HITL lock on sensitive actions, full audit trail
Dedicated account team; a per-change approval queue is not documented publicly
GEO — listings optimised for Rufus & AI assistantsThe discovery surface advertising tools ignore
Yes — listing optimisation for Rufus and other AI assistants
Not documented on its site
P&L and margin per productTACOS, fees, product cost and contribution margin, not just ACOS
Yes: P&L and margin per product with fees, advertising by type and product cost (contribution margin on Business)
ROAS-led reporting (claims +41% ROAS); per-ASIN P&L with COGS not documented
Amazon EU depthES, IT, DE, FR, UK as first-class markets, not translations
Purpose-built for ES, IT, DE, FR and UK with localised keyword data
32 countries covered; Amazon EU-specific depth not detailed
EU data & AI Act postureWhere your commercial data lives and how AI use is governed
EU data under GDPR, aligned with the EU AI Act, no training on your data without consent
ISO/IEC 27001 certified; EU data residency and AI Act posture not documented publicly
Open to your AI agents (MCP)Can Claude/ChatGPT query the platform on your behalf
Yes — Epinium MCP reads on every plan; writes workflows, SP/SB/SD campaigns, portfolios and tasks on Business (opt-in scopes); 90-day change log
MCP or agent access not documented publicly
Free trialCan you evaluate it before a sales call
Yes — free to start, no credit card
Not published — demo request
Competitor data verified on from the public sources below. Capabilities a vendor does not document publicly are marked as such rather than denied. Spotted something out of date? Tell us and we will correct it.
We have not used Quartile ourselves, so nothing below is our opinion: every point names the third party that reported it and links to it. Scores come from each product's own G2 page, read on the date shown — with the review count, because a high score on a handful of reviews is not the claim a slightly lower one on hundreds is.
Quartile
4.6/5
215 reviews on G2
81.7% of reviews from small business
Most-tagged strengths
Helpful
Advertising optimisation
Most-tagged complaints
Expensive
Slow performance
What reviewers say works
Dedicated account representatives are the single most repeated praise across its 215 G2 reviews, often named individually. G2 reviews ↗
Helpfulness and advertising optimisation are its two most-tagged strengths, on the largest review base of the products compared here. G2 reviews ↗
What reviewers say does not
Expensive and slow performance are its two most-tagged complaints on G2. G2 reviews ↗
No pricing is published anywhere on its site, so cost cannot be compared without going through a demo. quartile.com ↗
For comparison — Epinium on G2: 4.8/5 (9) — far fewer reviews than the figure above. Judge the number and the sample together. G2 ↗ ·
500+ brands run Amazon with Epinium
3
Epinium plans with a published price
0
prices published by Quartile
12
points compared, verified 15 Aug 2026
EU
data in the EU, aligned with the AI Act
Why brands choose Epinium over Quartile
The moatQuartile can't copy.
Advertising automation is a commodity. Epinium's edge is structural: European by design, human-in-the-loop by default, profit as the objective, and listings optimised for the AI assistants that now shape Amazon discovery.
Governed AI Execution (HITL)
You choose the level of control for bids, budgets and listing edits: run them through your review queue, or delegate to an autonomy mode that applies changes directly — new campaigns and workflows always start paused, and every change is logged for 90 days. Quartile's automation acts without a human-in-the-loop checkpoint.
Profit, Not Vanity ACOS
Amazon's Ads Agent optimises Amazon's revenue. Epinium works for your profit, with no conflict of interest. TACOS leads, and the P&L shows the contribution margin your ads leave after fees and product cost, not the advertising ratio that hides your real economics.
GEO — Rank in AI Shopping Assistants
Epinium optimises your listings to rank in Rufus and other AI shopping assistants (GEO) — the new discovery surface pure advertising tools ignore. Content is written for shoppers and for the models that recommend to them.
Built for Amazon EU
Epinium is purpose-built for Amazon EU — Spain, Italy, Germany, France, and UK — with localised keyword data and marketplace-specific AI. Quartile applies a US-first advertising engine across markets.
One Connected Operation
Listings, advertising, catalog, and inventory live in one platform where every lever informs the next — not an advertising point tool bolted onto the rest of your stack.
European Data & AI Act Aligned
Your data stays in Europe under GDPR and is never used to train AI models without your explicit consent. Epinium is aligned with the EU AI Act — governance that a US advertising platform retrofits, not builds in.
How the moat shows up
From ACOS automation togoverned, profit-first execution.
Quartile's AI adjusts bids to hit an ad ratio. Epinium's AI proposes changes across advertising, listings, and inventory — you govern what goes live, profit is the target, and your listings are tuned for the AI assistants buyers now trust.
Raise the bid on this keyword?
AI proposal → Your approval
Current bid €0.62
AI-suggested bid €0.78
Pending your review
Govern
Every AI change passes through your approval
Review, approve, or edit before it goes liveAI drafts the change — a bid, a budget shift, a listing edit — and holds it in a queue. Nothing reaches your Amazon account until a human signs off, so autonomy never becomes a runaway.
HITL lock on sensitive actionsFlag price changes, high-budget campaigns, or bulk edits to pause until a person approves. You choose exactly where the AI runs free and where it waits.
Full audit trailEvery applied change is logged with author, timestamp, and the entity it touched — a complete record of what the AI did and who approved it.
AI listing rewriterEpinium rewrites titles, bullets, and backend keywords using competitor analysis and real search data — capturing organic growth that ad optimisation alone can't reach.
GEO for AI shopping assistantsEpinium optimises your listings to rank in Rufus and other AI shopping assistants (GEO) — positioning your products where a growing share of buyers now start their search.
Keyword index monitoringTrack which keywords each ASIN is indexed for across every marketplace. Spot ranking gaps and fix listings proactively before position erodes.
P&L and margin by productSee revenue, fees, advertising by type and product cost down to contribution margin per product, the profit view Quartile's ACOS-first reporting leaves out. Real business outcomes, not just advertising ratios.
TACOS as the north starTACOS leads our advertising view, and the P&L shows what each product leaves after fees, advertising and product cost, so you judge spend by what it leaves instead of buying revenue at any ACOS.
Inventory & sales forecastingPredict stockouts before they happen and calculate reorder points from actual sales velocity per marketplace — a forward-looking layer Quartile doesn't provide.
With a vast catalog and little time, we trusted Epinium to optimize our listings. This led to increased organic sales and improved advertising performance through AI, allowing us to focus on growing our business.
Alberto Feria
CEO, Alfa Holding
★★★★★
With Epinium, we are able to save a lot of time editing our clients' listings thanks to its bulk editor and Artificial Intelligence. We are able to take care of their strategies.
Miriam Larrosa
CEO, Roicos
★★★★★
Our expectations were certainly exceeded. Everything is just so well thought out, and snappy. Their support team is excellent too!
Neus Dominguez
Marketplace Manager, Labbox
★★★★★
We use Epinium every day to monitor the status of all our ASINs across all marketplaces and improve our SEO very productively. An indispensable tool that lets us manage a much larger catalog than we imagined. Worth every penny.
Oriol Penya
Organic Beauty Brands
★★★★★
It is impossible to calculate the hours Epinium has saved me managing customer catalogs. I've modified catalogs of up to 3,500 SKUs and run SEO audits comfortably from the same panel.
Jordi Ordóñez
Amazon Consultant
★★★★★
Epinium's ability to analyze and adjust ads in real-time based on performance has enabled us to maximize ROI and achieve our business goals more effectively. Without a doubt, I recommend Epinium to any seller.
Edgar Alvarez
Head eCommerce, BANDAI Entertainment Europe
Try the Quartile alternative that optimises profit, on your approval.
Quartile is an advertising automation engine focused on ACOS. Epinium is a European platform where AI proposes changes across advertising, listings, and inventory, your team approves what goes live, and profit — not ad ratio — is the objective.
Does Epinium put a human in the loop?
You choose. Run changes through your review queue for sign-off, or delegate to an autonomy mode (Maintenance, Growth, Expansion, Custom) that applies them directly once you turn it on. Either way, new campaigns and workflows start paused, and every change is logged for 90 days.
What is GEO and does Epinium do it?
GEO is optimising your listings to rank in Rufus and other AI shopping assistants — a discovery surface pure advertising tools ignore. Epinium tunes your content for shoppers and for the models that now recommend products to them.
Does Epinium look at profit or just ACOS?
Profit. Amazon's Ads Agent optimises Amazon's revenue; Epinium works for your profit, with no conflict of interest. TACOS leads, and the P&L shows the contribution margin your ads leave after fees and product cost, not vanity ACOS.
Is Epinium built for Amazon EU?
Yes. Epinium is purpose-built for Amazon EU — Spain, Italy, Germany, France, and UK — with marketplace-specific AI, localised keyword data, GDPR compliance, and alignment with the EU AI Act.
How much does Quartile cost compared with Epinium?
Quartile: Not published — quote after a demo. Epinium publishes its pricing: Guru from €159/mo, Business €349 and Master €799 — published, not quoted on request. Business and Master also carry an advertising commission that tapers from 5% to 2% with volume, charged only on the ad spend Epinium manages. You can start free with no credit card. Full detail on Epinium pricing. Competitor data verified on 15 August 2026 from public sources.
Is there a European alternative to Quartile?
Yes — Epinium. US company (New York per third-party profiles); its own site states only global coverage, 32 countries. Epinium is a European company with data held in the EU under GDPR, aligned with the EU AI Act, and purpose-built for Amazon EU — Spain, Italy, Germany, France and the UK — with keyword data localised per marketplace rather than a translated engine.
Does Quartile optimise listings for Rufus and AI shopping assistants?
Not documented on its site. Epinium does: it optimises your listings to rank in Rufus and other AI assistants (GEO), writing content for the shopper and for the models that recommend to them — see GEO / AI search. To be precise: Epinium optimises for that surface; it does not measure your share of voice inside Rufus.
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