
Postman
Insomnia REST
Hoppscotch
Bruno
StopLight
ReadMe
Thunder Client
All-in-One workspace for API Design, Documentation, Debug, Mock, Test

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, Apidog seems to be a lot more popular than StackStats.app. While we know about 25 links to Apidog, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | apidog.com | 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 Apidog 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 Apidog yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Apidog: Streamline Your API Development with Comprehensive Tools for a Design-First Approach"
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 Apidog 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 Apidog 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.


Lack of Flow Visualization for Diagram Creation: While Apidog excels in many aspects of managing and testing APIs, it falls short when it comes to offering features like Postman Flow, which allows developers to create...
That’s right, APIDog gives you all the features that comes with Postman paid version, at a fraction of the cost. Migration has been so easily that you only need to click a few buttons, and APIDog will do everything...
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.


💡 Pro Tip: Building or interacting with AI agents and MCP servers? Apidog provides a powerful, built-in MCP Client specifically designed for debugging and testing MCP Servers. Whether you're connecting via STDIO for local processes or... - Source: dev.to / 8 months ago
Test Before Coding: Before writing integration code, validate your API requests visually. Tools like Apidog let you configure requests with headers, authentication, and body parameters, then inspect responses and generate code snippets... - Source: dev.to / 8 months ago
Apidog offers 4 users free with unlimited everything. Bruno has built a passionate community around privacy-first API testing. Insomnia continues to improve with strong multi-protocol support. - Source: dev.to / 9 months 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
When comparing Apidog and StackStats.app, you can also consider the following products.


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 Apidog or StackStats.app:

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.
Compare Insomnia REST to Apidog or StackStats.app:



Bruno is a Git-integrated, fully offline, and open-source API client
Compare Bruno to Apidog or StackStats.app: