Amazon PPC Tools Compared: Quartile vs Xnurta vs Eva Guru (2025)
Amazon advertising has become increasingly sophisticated — and increasingly expensive. Manual bid management at scale is nearly impossible: the number of keywords, match types, placement modifiers, and dayparting variables grows exponentially as your catalogue expands.
Dedicated PPC tools automate the heavy lifting and optimise bids based on performance data, often improving ACOS significantly within the first 30 days.
Quartile
Quartile uses AI-driven bid optimisation across Amazon, Walmart, and Google Shopping. It connects to your Seller Central or Vendor Central account, ingests your historical advertising data, and runs autonomous campaigns with minimal manual oversight. Their platform is particularly strong for brands spending $10,000+/month on ads — the AI needs enough data to make meaningful optimisations.
Best for: Established brands with significant ad budgets wanting hands-off, AI-driven management.
- Cross-channel (Amazon + Walmart + Google)
- AI bid optimisation updated multiple times daily
- Managed service option available
Xnurta
Xnurta is a data intelligence platform built for Amazon sellers and agencies. Beyond PPC automation, it provides market intelligence, competitor tracking, and detailed profitability reporting. The PPC module allows rule-based and AI-assisted bid management, and the interface is designed for agencies managing multiple brand accounts.
Best for: Agencies and data-driven sellers who want competitive intelligence alongside PPC automation.
- Multi-account / agency dashboard
- Market share and competitor ranking data
- Custom automation rule builder
Eva Guru
Eva Guru combines PPC optimisation with inventory management and profitability analytics in one platform. Their AI adjusts bids based on inventory levels — a powerful feature that prevents you from spending aggressively on keywords when you are low on stock. This inventory-aware bidding is particularly valuable for sellers who frequently run out of fast-moving SKUs.
Best for: Mid-sized sellers who want PPC, inventory, and P&L management integrated.
- Inventory-aware bidding (automatically reduces spend when stock is low)
- Profitability dashboard including COGS and FBA fees
- Amazon and Walmart support
Quick Comparison
| Quartile | Xnurta | Eva Guru | |
|---|---|---|---|
| AI bidding | ✓ Advanced | ✓ Rule + AI | ✓ Inventory-aware |
| Multi-channel | Amazon + Walmart + Google | Amazon focus | Amazon + Walmart |
| Agency-friendly | Yes | Yes (built for it) | Partial |
| Inventory integration | No | No | Yes |
Verdict
For pure PPC automation at scale, Quartile. For agency use with competitive intelligence, Xnurta. For sellers who want PPC and inventory managed together, Eva Guru.
Whichever tool you choose, pair it with a profit analytics platform — Sellerboard or Feedvisor — to track true margins after advertising costs.