
Postman
Insomnia REST
Hoppscotch
Apigee
Amazon API Gateway
MuleSoft Anypoint Platform
DreamFactory
Paw is a REST client for Mac.

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, RapidAPI for Mac seems to be a lot more popular than StackStats.app. While we know about 48 links to RapidAPI for Mac, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | paw.cloud | 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 RapidAPI for Mac 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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Dr Paw Paw Review & Demo | Abbey Clayton
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 RapidAPI for Mac 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 RapidAPI for Mac 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.


Are you a developer that works with macOS? Then Paw is the right pick for you. Paw is specifically built for macOS. As such, it is arguably the best tool for Mac interface. Unlike Postman which majorly revolves around...
Paw is a full-featured HTTP client, which allows you to send all kinds of HTTP requests. With Paw, you can test your APIs and also explore new ones.
Paw is an advanced API tool with powerful features designed explicitly for Mac. Its primary function is to test and describe APIs, and it provides a beautiful interface to make activities such as composing requests,...
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.


Why miss? It still exists, just renamed as RapidCloud https://paw.cloud. - Source: Hacker News / 10 days ago
RapidAPI for Mac, formerly Paw, it's free for individuals. https://paw.cloud/. - Source: Hacker News / about 1 year ago
If you're on macOS, try Paw/RapidAPI https://paw.cloud They may be affected by AWS. - Source: Hacker News / about 1 year 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 / 5 days ago
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