
Figma
Adobe XD
Invision
Moqups
Axure RP
Balsamiq
MockFlow
Design is really about solving problems. UXPin is the UX Design Platform that gets that right.

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?
StackStats.app might be a bit more popular than UXpin. We know about 1 link to it since March 2021 and only 1 link to UXpin.
Website, pricing, platforms and company facts side by side.
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| Website | uxpin.com | stackstats.app |
| Pricing | ||
| Company | Startup from the United States | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of UXpin 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.


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


No analysis of UXpin yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
UXPin: 2018 Feature 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 UXpin 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 UXpin 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.


It is another best Figma alternative that provides a number of features to make the UX/UI design process easier. With UXPin, you may start from scratch when designing solutions. However, you may also import Bootstrap...
One of its stand-out features is UXPin Merge, with which you can design using React and ensure consistency across the board. This option lets you use the same components for design AND development—all you need to do...
UXPin is a collaborative design platform that allows you to create beautiful, detailed user interfaces in record time. The platform uses Merge Technology to help reuse the same building blocks and design components...
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.


1st design a responsive website from templates that follow established design: UXPin.com . Most of the other prototyping solutions kinda felt like they're built for folks who can draw, sketch, or maybe organize their room and choose... Source: almost 5 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 / 1 day ago
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