
eBay
thredUp
Etsy
Mercari
1stdibs
StockX
Amazon
Poshmark is the #1 place to buy and sell fashion. Shop millions of closets–and sell yours too!

Substack
Formo.so
Advanced analytics for Substack writers. Runs 100% locally, no cloud, no subscription. Discover your superfans, churn risk, and cohort retention.
Which is more popular?
Based on our record, Poshmark seems to be a lot more popular than StackStats.app. While we know about 46 links to Poshmark, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
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| Website | poshmark.com | stackstats.app |
| Pricing | — | |
| Company | 2011 | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Poshmark yet.
StackStats is a local desktop app for serious Substack writers. Import your CSV exports and get analytics Substack doesn't show you: bot-filtered open rates, cohort retention, dead subscriber detection, superfan ID, content-to-growth correlation, and an optional AI layer (supports Ollama,...
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Watch This Before You Buy or Sell on PoshMark | Poshmark Buyer & Seller Tips | Poshmark Review
More videos
No StackStats.app videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Poshmark and StackStats.app.
StackStats.app's answer:
I built StackStats because Substack's native analytics weren't cutting it. I wanted cohort data, real open rates (not bot-inflated), and a way to identify which posts were actually driving subscriber growth — but every tool I found was either cloud-based or required migrating off Substack entirely. So I built a local app that works with Substack's own CSV exports. No migration, no cloud, no subscription.
StackStats.app's answer:
StackStats runs 100% locally on your machine — your subscriber data never touches a server. It also goes far beyond what Substack shows natively: bot-filtered open rates, cohort retention, superfan identification, dead subscriber detection, and content-to-growth correlation. No subscription, no account, no cloud. Pay once, own it forever.
StackStats.app's answer:
Most newsletter analytics tools are cloud-based SaaS with monthly subscriptions. StackStats is a one-time purchase that runs entirely on your device. For Substack writers who care about privacy — especially those with paid subscribers — that's a meaningful difference. You also get analytics features that don't exist anywhere else, like bot-filtered open rates and cohort retention, without having to migrate away from Substack.
StackStats.app's answer:
Serious Substack writers who are frustrated by Substack's shallow native analytics and want real data to drive growth — without moving their subscriber data to the cloud.
StackStats.app's answer:
Electron (macOS + Windows), HTML/CSS/JavaScript, Chart.js, PapaParse. Optional AI layer supports Ollama, Claude, GPT-4, Gemini, Groq, and OpenRouter. Licensing via Cloudflare Workers + D1. Payments via Gumroad.
Share your experience with using Poshmark and StackStats.app. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Poshmark is a site dedicated to selling fashion and accessories. The site has many great features for sellers and offers Posh Protect to buyers. Posh Protect is a service that gives buyers a money-back guarantee on...
Poshmark is one of the original online consignment shops but what you might not know is that it has a great selection of kids' clothing (and is an excellent way to sell). Selling is uber-easy with the app: you take a...
Poshmark is a free app that lets you sell high-end clothing, shoes, handbags, and accessories. Messaging and payments are handled over the app, and the buyer pays for shipping. Poshmark takes a 20% commission for each...
We have no reviews of StackStats.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Poshmark - buyer: Marketplace Integrity or Risk Operations lead; budget bucket: first-order fraud, refund abuse, and seller/buyer identity abuse; estimated pilot budget: $20k-$35k/month. - Source: dev.to / 6 months ago
If there are brands you know fit you well, buy the clothes secondhand, e.g. From poshmark.com. Source: over 3 years ago
Yeah, I get it. They are more pricey. One option is to look at https://revivo.com for 2nd hand options from Vivo. Or try 2nd hand market places like Minimalist Shoe Buy/Sell/Trade on facebook, or Poshmark. I've had luck on all those... Source: over 3 years ago
I'm working on 3 products now: 1. FormBeep(https://formbeep.com) at $38 MRR now - A form to Whatsapp tool. Stack is mainly CF workers with Clerk Auth. 2. SlashLink(https://slashlink.app) $0 - A simple pay as you go amazon link localizer.... - Source: Hacker News / 3 days ago
When comparing Poshmark and StackStats.app, you can also consider the following products.

Buy and sell electronics, cars, fashion apparel, collectibles, sporting goods, digital cameras, baby items, coupons, and everything else on eBay, the world's online marketplace
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With Substack, anyone can start a publication that combines a personal website, blog, and email newsletter or podcast. It's quick and simple.
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thredUp is the free fashion resale app for the consumer to buy and sell secondhand clothing online.
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Buy and sell handmade or vintage items, art and supplies on Etsy, the worlds most vibrant handmade...
Compare Etsy to Poshmark or StackStats.app:

Mercari provides a hassle-free and secure way for anyone to buy and sell stuff straight from their mobile device. We provide a buyer protection guarantee so you can buy in confidence. About UsFurther Information.
Compare Mercari to Poshmark or StackStats.app: