
MongoDB
Redis
PostgreSQL
ArangoDB
MariaDB
RethinkDB
CouchBase
HTTP + JSON document database with Map Reduce views and peer-based replication

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, CouchDB seems to be a lot more popular than StackStats.app. While we know about 25 links to CouchDB, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
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| Website | couchdb.apache.org | 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 CouchDB 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.
couchdb
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 CouchDB 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 CouchDB 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.


CouchDB is a multipurpose open-soure database engine with a developer-friendly API and rich web admin dashboard. It offers user crud operation and authentication out-of-the-box. It also supports documents upload, file...
The prominent big data analytics tools that use non-relational databases are MongoDB, Cassandra, Oracle No-SQL, and Apache CouchDB. We’ll dive into each one of these and cover their respective features.
CouchDB is an open source NoSQL data which is based on the common standard to offer web accessibility with a variety of devices. Data in CouchDB is stored in JSON format, and organized as key-value pairs.
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.


CouchDB has a "List function" feature which allows you to transform query results. - Source: dev.to / 10 months ago
CouchDB on the serer and PouchDB on the client was an attempt at making such an environment: - https://couchdb.apache.org/ - https://pouchdb.com/ Also some more pondering on local-first application development from a "few" (~10) years... - Source: Hacker News / over 1 year ago
The author would be excited to learn that CouchDB solves this problem since 20 years. The use case the article describes is exactly the idea behind CouchDB: a database that is at the same time the server, and that's made to be synced... - Source: Hacker News / over 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
When comparing CouchDB and StackStats.app, you can also consider the following products.

MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
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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.
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Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
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PostgreSQL is a powerful, open source object-relational database system.
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A distributed open-source database with a flexible data model for documents, graphs, and key-values.
Compare ArangoDB to CouchDB or StackStats.app: