SellerApp vs ZonGuru
We give SellerApp a 2.2 GPA and ZonGuru a 1.4, out of 4.0. SellerApp grades higher on value for money, the free plan, features and platforms. They get the same grade on ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
SellerApp
Amazon ads automation, profit tracking and product research in one
ZonGuru
AI listing rewrites and monitoring for Amazon US and UK sellers
How we grade them
| 2.2GPASellerAppFair | 1.4GPAZonGuruWeak | |
|---|---|---|
| Value for money | CPro is $99 a month and up, rising with your ASINs, ad spend and revenue. The FAQ says yearly billing saves 50%, but no yearly price is shown. That's inside the normal range here. The Smart Plan, with an account manager, is $250 after $149 for the first 3 months. | DGraded against the suites it's listed beside. Helix Starter is $124 a month billed annually at $1,490 ($149 monthly) for 15 watched listings and 5 rewrites. Helium 10's Platinum is $99 with an AI listing builder and all its research, and extra Helix rewrites are $49 each. |
| Free plan and trial | CFreemium is free for as long as you like, with no card: basic product research, an advertising overview, campaign manager and listing quality checks. Access is limited, so it's a taster rather than a plan you'd run a store on. | DThe free AI Readiness Score rates a live listing from 0 to 100, with no card. It doesn't rewrite or watch anything, though, and there's no trial of Helix itself, so the free part does none of the paid job. |
| Features | CRule-based PPC automation with hourly bids and dayparting, a profit dashboard per ASIN, listing scores and an extension. Product research is the basic part, and there's nothing on record for inventory, review requests or reimbursements. | DHelix does one narrow job, listing copy: scoring, rewriting, publishing and nightly checks. Only the US and UK marketplaces are covered, and ZonGuru's older product and keyword research is gone from its pricing page. |
| Ease of use | CNo rating on record. Bid rules, dayparting and profit tracking all need your seller and ad accounts connected and your costs filled in, and there's a fair bit to learn. | CNo rating on record. The score needs nothing, but Helix needs a Seller Central connection on a Professional selling plan, and you approve each rewrite before it goes live. |
| Platforms and integrations | BWeb and a Chrome extension, with no phone or desktop app. It connects to Seller Central, Amazon Ads, Amazon DSP and Amazon Marketing Cloud, and there's a data API billed by usage. | CWeb only, on the US and UK Amazon marketplaces. It connects to Seller Central, and every plan includes MCP access for Claude or another AI tool. No phone or desktop app. |
| Best for | automating Amazon PPC with profit in view | rewriting Amazon listings for AI shopping |
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: SellerApp and ZonGuru. How we grade
Price against what you get
SellerApp starts at $99 a month and scores 2.3 out of 4 on features, ease of use and platforms. ZonGuru starts at $124 a month and scores 1.7.
SellerApp scores higher and starts $25 a month lower. Of the other Amazon seller tools on the chart, 2 score higher than SellerApp for less, and 12 score higher than ZonGuru for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- SellerApp starts at $99 per month and up. ZonGuru starts at $124 per month, billed annually at $1,490 ($149 billed monthly).
- Only SellerApp lists a browser extension.
- SellerApp also covers keyword research, rank tracking and dashboards.
At a glance
| SellerApp | ZonGuru | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $99 per month and up | $124 per month, billed annually at $1,490 ($149 billed monthly) |
| Free plan | Freemium plan, free for as long as you like with no card: basic product research, product intelligence, an advertising overview, campaign manager and listing quality checks. | Free AI Readiness Score: a 0-to-100 read of how well a live listing answers Amazon's AI, with no card or Seller Central connection. Rewrites and monitoring need a plan or credits. |
| Free trial | None listed | None listed |
| Web | ||
| Browser extension | ||
| Made by | SellerApp | ZonGuru |
| Price read from | sellerapp.com | zonguru.com |
| Checked | Oct 18, 2026 | Oct 18, 2026 |
Who each one suits
SellerApp
- Sellers who spend heavily on Amazon PPC and want rule-based automation
- Sellers who want profit after ads and fees by product
- Agencies managing several Amazon ad accounts
ZonGuru
- Brand owners who want listings rewritten for Amazon's AI shopping assistant
- Agencies managing listings for several Amazon clients
- Sellers on Amazon US or UK with a catalog of up to 100 key listings
Worth knowing
SellerApp
- The Smart Plan's $149 price lasts for the first 3 months; the page shows $250 a month after that.
- Plan prices start at the figures shown and rise with the number of ASINs, ad spend and revenue.
- Agencies pay from $300 a month plus 0.5% to 2.5% of Amazon ad spend.
- Managed ad services and API access are quoted separately through sales.
ZonGuru
- Helix works only on the US and UK Amazon marketplaces.
- Plans need a Seller Central connection on an Amazon Professional selling plan.
- Extra rewrites are bought as credits at $49 for one or $99 for three; credits bought this way never expire.
- ZonGuru's older product and keyword research tools are no longer on its pricing page, which now sells only Helix.
Key features
SellerApp
- PPC automation
- Rule-based bid automation with preset rules such as ACoS Reducer and Target Harvester, hourly bid changes from Marketing Stream data and dayparting.
- Profit dashboard
- Tracks FBA fees, ad spend, storage, shipping and product costs to show margin, net profit, ROI and TACoS for each ASIN.
- Product and keyword research
- Finds products and keyword opportunities, with keyword rank tracking on paid plans.
- Listing Quality Index
- Scores listings on titles, bullet points, images, backend keywords, descriptions and A+ content.
- Chrome extension
- Shows estimated daily orders, revenue, BSR, FBA fees and opportunity scores on Amazon search and product pages.
- Data API
- A REST API returns product, sales, advertising and keyword data, billed monthly by usage.
ZonGuru
- AI Readiness Score
- Scores every listing from 0 to 100 and ranks them by fixable gap and revenue at stake, so the most valuable fixes come first.
- Listing rewrites
- Rewrites titles, bullets, descriptions and shopper questions in one pass for Amazon's A9 search and its AI shopping assistant, within Amazon's 75-character title cap.
- One-click publishing
- Shows the before and after for approval, then publishes the new copy to Amazon and confirms it is live.
- Nightly monitoring
- Checks watched listings nightly for score drops and outside edits, and more often for suspensions and a lost Buy Box.
- MCP access
- Every subscription can connect Claude or another MCP-capable AI tool to Helix to pull Amazon data and run rewrites from there.
Plans
SellerApp
Freemium$0
Basic product research and overview, product intelligence, advertising overview, campaign manager and listing quality, with limited access.
Pro Plan$99
per month and up
For sellers growing several products: adds insights, keyword tracking, listing quality reports, ads automation and email support.
Smart Plan with Automation$250
per month and up
Advertising automation, quarterly business reviews, chat support and a dedicated account manager. Advertised at $149 a month for the first 3 months.
CustomCustom
Smart Plan plus data warehousing, custom development, a product solution expert and priority support, arranged on a call.
ZonGuru
AI Readiness Score$0
Scores a live listing's text from 0 to 100 on meaning and buyer question coverage. It does not rewrite or monitor anything.
Helix Starter$124
per month, billed annually at $1,490 ($149 billed monthly)
Up to 15 watched listings and 5 rewrites a month, with monitoring and alerts, a Seller Central connection and MCP access.
Helix Growth$249
per month, billed annually at $2,990 ($299 billed monthly)
Up to 50 watched listings and 10 rewrites a month, with the same monitoring, publishing and MCP access.
Helix Pro$583
per month, billed annually at $6,990 ($699 billed monthly)
Up to 100 watched listings and 25 rewrites a month.
Helix EnterpriseCustom
Custom listing and rewrite counts with volume pricing and priority support, quoted by sales; aimed at agencies with many clients.
Ways to pay less
SellerApp
- Other savings
Smart Plan at $149 for the first 3 months
The pricing page shows the Smart Plan with Automation at $149 a month for the first 3 months, down from $250.
- Annual discount
Save 50% with a yearly plan
SellerApp's pricing FAQ says a yearly subscription saves 50% of the fees compared with paying monthly.
ZonGuru
- Annual discount
Save 17% with annual billing
Billed yearly, Helix Starter is $1,490 ($124 a month) instead of $149 a month; Growth and Pro are discounted the same way.
