
Tailwind UI
DaisyUI
Float UI
FlowBite
Aceternity UI
Tailwind CSS
Pines
Open source Tailwind CSS UI components

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, Preline UI should be more popular than StackStats.app. It has been mentioned 9 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | preline.co | stackstats.app |
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| Company | — | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Preline UI 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 Preline UI yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Preline UI 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 Preline UI 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.


Preline UI is a freshly released UI component library on top of Tailwind CSS. It's unclear whether the promotion was part of the marketing strategy for this library, but I've seen it trending on Twitter, and many...
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.


Preline UI distinguishes itself by focusing on enterprise applications while maintaining the flexibility developers need. Its MIT license and comprehensive documentation make it particularly appealing for teams building complex... - Source: dev.to / over 1 year ago
1️⃣ Sailboat UI - https://sailboatui.com/ A lightweight and customizable library perfect for crafting sleek, modern designs. 2️⃣ HyperUI - https://www.hyperui.dev/ A collection of free, accessible components for marketing websites,... - Source: dev.to / almost 2 years ago
Today, I've released the Gowebly CLI v2.4.0 which includes Preline UI components library support for the frontend. - Source: dev.to / over 2 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
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