
Weather.com
Weather Underground
AccuWeather
CARROT Weather
1Weather
Windy
WeatherBug
Hyperlocal weather information, now on the web ⛈

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


No description of Dark Sky 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.


Overall verdict
Why this product is good
Recommended for
Dark Sky was highly recommended for users needing detailed and reliable weather forecasts and those who preferred an intuitive and user-friendly application or website. As it became a part of Apple's ecosystem, iOS users are encouraged to try the Apple Weather app to experience similar benefits.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Dark Sky Weather App 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 Dark Sky 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 Dark Sky 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.


A broad selection of notification choices is another area where Dark Sky and AccuWeather differ slightly from one another. You can thus personalize the alerts to suit your preferences in order to stay informed about...
There are two types of committed cyclists: Those who watch the Weather Channel for fun and those whose nightmares are punctuated by ominously swirling weather radar. No matter whether you get excited or compulsively...
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.


Tracking Dark Sky since Mar 2021.
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 / 4 days ago
When comparing Dark Sky and StackStats.app, you can also consider the following products.

The Weather Channel and weather.com provide a national and local weather forecast for cities, as well as weather radar, report and hurricane coverage
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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.
Compare Substack to Dark Sky or StackStats.app:

Weather Underground is committed to delivering the most reliable weather information possible.
Compare Weather Underground to Dark Sky or StackStats.app:


AccuWeather is an app that provides hourly, daily and 15-day weather forecasts, which you can...
Compare AccuWeather to Dark Sky or StackStats.app:

An eerily accurate weather app with hilarious forecasts
Compare CARROT Weather to Dark Sky or StackStats.app: