
Telegram
Signal
Facebook Messenger
Element.io
Slack
Discord
LINE
WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.

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, WhatsApp seems to be a lot more popular than StackStats.app. While we know about 24 links to WhatsApp, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | whatsapp.com | stackstats.app |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States · 1,000 - 1,999 employees · 2009 | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of WhatsApp 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 WhatsApp yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How to Use Whatsapp - 2020 Beginner's Guide
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 WhatsApp 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 WhatsApp 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.


WhatsApp’s other claim to fame is its security features, with end-to-end encryption. These security features, although not perfect, are still considered much better than Telegram’s. WhatsApp does a good job...
WhatsApp is another highly popular messaging app that has brought end-to-end encryption to the masses. And the best part is that the encryption is enabled by default and extends to all forms of communication on...
I AM USING WHATSAPP SINCE 2015 AND STILL CURRENTLY USING IT HELPS ME TO GET IN TOUCH WITH MY FRIEND AND RELATIVES AND NOW IT ALSO HELPS ME TO DO PAYMENT VIA WHATSAPP.
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.


Hi everyone. The other day a client of mine's employees started having issues with the "internet not working". After some detective work with traceroute and interviewing them about what sites they were having issues with, I determined... Source: almost 3 years ago
I believe web.whatsapp.com is being blocked by local telecom companies in order to protect their duopoly and keep Oman in tech--stone-age. If fewer people know how else the rest of the world uses the internet, then they don't have to... Source: almost 3 years ago
What's wrong with https://web.whatsapp.com/ ? Source: almost 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 / 2 days ago
When comparing WhatsApp and StackStats.app, you can also consider the following products.

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Compare Telegram to WhatsApp or StackStats.app:

With Substack, anyone can start a publication that combines a personal website, blog, and email newsletter or podcast. It's quick and simple.
Compare Substack to WhatsApp or StackStats.app:

Fast, simple & secure messaging. Privacy that fits in your pocket.
Compare Signal to WhatsApp or StackStats.app:


Facebook Messenger is a faster way to message.
Compare Facebook Messenger to WhatsApp or StackStats.app:

Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Compare Element.io to WhatsApp or StackStats.app: