Best for
Best for Etsy sellers who want keyword data and listing audits for one or more shops at a low monthly price.
E-commerce Seller Tools Comparison
eRank vs. SellerApp
At a glance
At a glance
Best for
Best for Amazon sellers and agencies whose main workload is advertising, with research and listing checks alongside.
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | eRank | SellerApp |
|---|---|---|
| Starting price | Free Paid plans from $5.99 per month, or $65.99 billed annually. | Freemium free; Pro from $99 / month The pricing FAQ states a yearly plan saves 50% against monthly billing; yearly amounts are not shown. Smart is $149 a month for the first 3 months, then $250. |
| Free trial | No trial; an ongoing free plan instead | Freemium plan with limited access, no credit card required |
| API | Not stated | Paid Amazon data APIs for products, keywords, listing quality, FBA fees and profit, with a key issued on subscribing and 100 free tokens to start |
| Hosting | Cloud: a web app and a Chrome extension | Cloud: a web app and a browser extension |
| Product research | Trend Buzz on what shoppers search for on Etsy, Amazon, eBay and other marketplaces, monthly Etsy trend reports by category, and the Top 100 listings for any keyword with estimated sales and average price | Product research and product intelligence, ASIN tracking of historical pricing, sales estimates, revenue trends and listing quality over time, and a browser extension that shows data on Amazon product pages |
| Marketplace keyword research | Keyword tool with search volume, clicks, click-through rate, competition and 15 months of search history, keyword ideas, keyword lists and side-by-side comparison of up to four keywords | Keyword Explorer for keyword research and a keyword tracker that monitors rankings; keyword tracking is part of the Pro plan |
| Listing optimisation | Listing audits against Etsy's guidelines, the AI Listing Helper for titles, tags and descriptions, tag reports, a rank checker and daily snapshots of listing changes | Listing Quality Index (LQI) analysis of Amazon listings across 6 to 7 areas; listing optimisation and creation is also sold as a managed service per parent ASIN |
| Competitor tracking | Estimated daily sales for tracked Etsy shops, shop reports, competitor listings and tags, and a ranking of Etsy's top sellers by sales | Competitor research, and ASIN tracking that follows any product's pricing, sales estimates and listing quality over time |
| Fee and profit calculation | A Profit Calculator for all members: from the shop's country, price, shipping, tax, discount and the seller's labour, material, shipping, renewal and Etsy Ads and Offsite Ads costs, it estimates Etsy's listing, transaction, payment processing and regulatory fees, total cost, profit and margin; an Ad Performance Calculator sits beside it | Profit and loss tracking at every level of the account, plus FBA Fees and Amazon Profit Calculator APIs |
| Marketplaces covered | Etsy for shop connections and competitor tracking; the Chrome extension adds keyword and competitor research on Amazon and keyword trend data on Printify, Shopify, eBay and Teachers Pay Teachers | Amazon; the pricing page lists US, CA, MX, BR, DE, ES, FR, IT, NL, PL, SE, TR, UK, SA, AE, AU, IN, JP and SG, while its FAQ names 15 of these |
| Integrations and API | Etsy shop connection through the Etsy API, up to 100 shops on Expert, and a Chrome extension | Paid APIs for product details, best sellers by category, category tree, reviews, keywords, keyword tracking, indexing, listing quality, FBA fees, profit, storefronts and search results; pricing is usage-based and on request |
| AI features | Yes | Yes |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Support | Email helpdesk, Community forum | Email helpdesk, Chat |
| Onboarding | more entries Documentation and knowledge base, Video tutorials | Personal consulting |
| Integrations | more entries Etsy, Chrome extension | Browser extension |
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Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.
The short version
Key Differences
- Starting price eRank Free SellerApp Freemium free; Pro from $99 / month
- Free trial eRank No trial; an ongoing free plan instead SellerApp Freemium plan with limited access, no credit card required
- Hosting eRank Cloud: a web app and a Chrome extension SellerApp Cloud: a web app and a browser extension
- Support eRank Email helpdesk, Community forum SellerApp Email helpdesk, Chat
- Product research eRank Trend Buzz on what shoppers search for on Etsy, Amazon, eBay and other marketplaces, monthly Etsy trend reports by category, and the Top 100 listings for any keyword with estimated sales and average price SellerApp Product research and product intelligence, ASIN tracking of historical pricing, sales estimates, revenue trends and listing quality over time, and a browser extension that shows data on Amazon product pages
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
eRank
Strengths
- Free plan with no time limit and no card needed
- Paid plans start at $5.99 a month, or $65.99 billed annually
- Keyword data comes with 15 months of search history
- Expert connects up to 100 Etsy shops in one account
Limitations
- Free plan is limited to 5 keyword lookups and 5 listing audits a day
- Competitor sales are estimates
- Shop connections and competitor tracking cover Etsy only
- The site names no public API
SellerApp
Strengths
- Freemium plan with no credit card required
- Advertising automation and research in the same account
- Listing Quality Index analysis of Amazon listings
- Documented Amazon data APIs, starting with 100 free tokens
Limitations
- Yearly prices are not shown, only a stated 50% saving
- Smart is discounted only for the first 3 months, then $250 a month
- API pricing is on request
- Agencies pay 0.5% to 2.5% of Amazon ad spend on top of the base fee
Plans
Pricing
eRank
- Free $0 No time limit. 5 keyword lookups and 5 listing audits per day, 1 shop with 50 listings.
- Basic $5.99 / month Or $65.99 billed annually. 100 keyword lookups per day, up to 5 shops.
- Pro $9.99 / month Or $94.99 billed annually. 200 keyword lookups per day, up to 10 shops.
- Expert $29.99 / month Or $269.99 billed annually. 500 keyword lookups per day, up to 100 shops.
SellerApp
- Freemium $0 For sellers getting started on Amazon. Basic functionalities including product research; no credit card required.
- Pro From $99 / month Adds insights and tracking, keyword tracking, listing quality and email support.
- Smart From $250 / month $149 a month for the first 3 months. Adds ads automation, a quarterly business review, email and chat support, a dedicated account manager and custom development.
- Custom On request Smart plan plus data warehousing, custom development, a product solution expert and priority support.
- Agency $300 plus 0.5% to 2.5% of Amazon ad spend Agency program with ad automation, multiple accounts and reporting; the FAQ calls $300 a starting sum and states no minimum duration.
What users say
Review Scores · opens after launch
eRank
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Nothing has been published here yet, and no score is shown. How a review is checked before it appears is described below.
SellerApp
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Nothing has been published here yet, and no score is shown. How a review is checked before it appears is described below.
How we check reviews
Before sending, the author has to confirm three things: that they have used the product themselves, that they work neither for the vendor nor for a competitor, and that nobody is paying them for the review. We also ask whether the vendor invited them to write it. That answer is required, either answer is accepted, and it stays with the review.
Every review is read by a person before it appears. An email address is required and is confirmed: we send a link to it, and a review does not reach us until the author opens that link, so a review has a sender who was reachable at least once rather than being anonymous. Where what somebody writes needs backing, we ask them for evidence that they used the product, and a review that does not get it is not published. We publish positive and negative reviews alike, we pay nothing and offer nothing for a review, and we accept none that was bought or incentivised.
What we cannot do is verify a purchase. There is no shop here and no account, so whether the author really used the tool rests on their own declaration, on whatever we ask them for, and on the plausibility of what they write. We say so rather than implying a check that does not exist.
A vendor cannot buy a review, and cannot have one removed or changed because they dislike it. We remove or edit a review only if it breaks our rules or the law, for example a false statement of fact. Paid placement has no effect on which reviews appear or on any score.
Where this comes from
Where this comes from
eRank https://erank.com/ · checked against the official source on 2026-11-10
SellerApp https://www.sellerapp.com/ · checked against the official source on 2026-11-11
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.