Perpetua vs Stackline (2026): which should you pick?
As of Nov 13, 2026, Stackline grades higher than Perpetua: 1.8 against 1.2 out of 4.0.
Checked Oct 18, 2026 and Nov 13, 2026 · graded Oct 18, 2026 and Nov 13, 2026 by ToolGPA
Stackline grades higher on value for money and platforms. They get the same grade on the free plan, features and ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
Perpetua
Goal-based ad automation for Amazon, Walmart and other marketplaces
From $695/mo
Stackline
Enterprise retail analytics and ad platform for consumer brands
Paid
Which one is for you
Pick Perpetua if
- Fits if you spend several thousand dollars a month on Amazon ads and want goals, not campaigns
- Works for agencies running ads for many Amazon and Walmart clients
Look elsewhere if
- Pricey if you spend little on ads, as it's $695 a month regardless
- Skip it if you want to try it first, as there's no free plan or trial
- Not for you if you also want research, profit tracking or repricing
- Watch out: above $10K a month in ad spend a share is added to the $695, and the page doesn't say how much
- Tight if you want hourly bidding, share of voice or onboarding help, which all start at Growth
Pick Stackline if
- Fits if you run a consumer brand across Amazon, Walmart and Target
- Makes sense if you want forecasts and competitor tracking for a catalogue of SKUs
Look elsewhere if
- Not for you if you are one marketplace seller: customers are described as consumer brands
- Skip it if you want a visible price, as it points you to a demo
- Skip it if you want a free try, because there is no free plan or trial
- Watch out: Atlas, Beacon, Advisor and Ad Manager are separate products and the site doesn't say which come together
How we grade them
| 1.2GPAPerpetuaWeak | 1.8GPAStacklineWeak | |
|---|---|---|
| Value for money | FGraded against the ad tools it's listed beside. Essentials is $695 a month, even well under $10K of ad spend. Teikametrics' Essentials is $149 and BidX Essential $195 for the same band, and nothing on record here explains the gap. Above $10K, a share of spend is added. | CNo price is published and the site points to a demo, so it sits in the middle by default. |
| Free plan and trial | FNothing free on record: no free plan and no published trial. You're paying $695 from the first month. | FNo free plan and no trial on record, so you pay before you see it. |
| Features | CGoal-based campaigns, AI bidding, keyword harvesting, profitability and market reports, and display and video ads. Hourly bidding and share of voice start at Growth, and there's no research, profit tracking or repricing. | CCompetitor and market tracking, 52-week SKU forecasts, shopper analytics, an AI assistant and ad manager. It is several products and the site doesn't say which come together. |
| Ease of use | CNo rating on record. Setting goals is simpler than building campaigns by hand, but you still connect ad accounts and pick targets, and onboarding help starts at Growth. | CNo store rating on record. A multi-product platform for brand teams, built around onboarding and demos. |
| Platforms and integrations | CWeb only, with no phone or desktop app. It connects to Amazon Ads, Marketing Stream, Amazon Marketing Cloud and Walmart, the platforms it runs ads on, and nothing else on record. | BWeb sign-in with Amazon, Walmart and Target data. No desktop or phone app is named. |
| Best for | goal-based Amazon ads for bigger spenders | large consumer brands tracking retail sales |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Perpetua and Stackline. How we grade
Where they differ
- Stackline also covers AI agents and dashboards.
In commonWebAI featuresReportsAmazon selling
At a glance
| Perpetua | Stackline | |
|---|---|---|
| Pricing | Paid | Paid |
| Starts at | $695 per month for up to $10K in monthly ad spend | Not published |
| Free plan | None | None |
| Free trial | None listed | None listed |
| Web | ||
| Made by | Perpetua | Stackline |
| Price read from | perpetua.io | Not confirmed |
| Checked | Oct 18, 2026 | Nov 13, 2026 |
Worth knowing
Perpetua
- There is no free plan or published free trial; the lowest plan is $695 a month even below $10K of ad spend.
- Above $10K a month in ad spend, a percentage of spend is added to the $695 fee; the page does not say how much.
- Hourly bidding, share of voice and onboarding help start at the Growth tier.
- It is an ad tool only: there is no product research, profit tracking or repricing.
Stackline
- No prices are published; the site points buyers to scheduling a demo.
- Its customers are described as consumer brands, so it is not set up for a small individual seller.
- The platform is a suite of separate products (Atlas, Beacon, Advisor, Ad Manager), and the site does not say which come together.
- The site lists a web sign-in only; no desktop or mobile apps are named.
Key features
Perpetua
- Goal-based campaigns
- Set an objective, a target ACoS and a daily budget, and Perpetua builds, runs and adjusts the campaigns to meet it.
- AI bidding and keyword harvesting
- Conversion-based bidding and automatic keyword harvesting, with recommendations such as negating search terms that never convert.
- Hourly optimization
- From the Growth tier, Amazon Marketing Stream data drives hourly reports and intraday bid changes.
- Share of voice and organic rank
- Growth adds hourly share-of-voice and organic rank insights, plus competitor search term data and revenue opportunity analysis.
- Profitability and market reports
- Reports total sales, attributed and organic sales and ACoS across channels, with retail intelligence and digital shelf insights.
- Display and video ads
- Manages display and video advertising alongside sponsored search ads.
Stackline
- Atlas market intelligence
- Tracks competitor ad spend, market share, traffic, reviews, pricing and product performance across Amazon, Walmart, Target and other retailers.
- Beacon forecasting and insights
- Dashboards across sales, advertising, content and operations, plus 52-week SKU-level forecasts and scenario modeling.
- Shopper Analytics
- Shows how shoppers behave across retailers, with AI-identified audience segments and tracking by retailer.
- Advisor AI agent
- An assistant that connects sales, media and shopper data to answer questions, assess competitors and propose action plans.
- Ad Manager
- Runs retail media campaigns on Amazon, Walmart and other retailers from one interface, with rules, dayparting and budget pacing.
Plans
Perpetua
Essentials$695
per month for up to $10K in monthly ad spend
AI bid optimization, automated keyword harvesting, performance and profitability reports, chat support and the Ad School tutorials.
Growth$695
per month, plus a share of ad spend, for over $10K a month in spend
Adds hourly reports and bidding through Amazon Marketing Stream, share of voice and organic rank, and onboarding. The share of ad spend is not published.
PremiumCustom
For over $500K a month in ad spend: market intelligence, custom AMC reports and data integrations, beta features and a dedicated account team.
Stackline
Pricing could not be confirmed. See stackline.com.
Common questions
Which is cheaper, Perpetua or Stackline?
As of Nov 13, 2026, Perpetua starts at $695 per month for up to $10K in monthly ad spend, and Stackline has no price we could confirm.
Which has a free plan, Perpetua or Stackline?
As of Nov 13, 2026, neither Perpetua nor Stackline has a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.