
Aircall
RingCentral
Dialpad
Grasshopper
CloudTalk
JustCall
Nextiva
Simplest way to own a business phone number

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, OpenPhone seems to be a lot more popular than StackStats.app. While we know about 11 links to OpenPhone, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | openphone.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 OpenPhone 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.
OpenPhone
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 OpenPhone 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 OpenPhone 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.


I needed a 1800 number for my business, and paying for a second phone line and getting a second phone is overpriced for what I needed. for 10 bucks a month, OpenPhone allows me to have a 1800 number right on my own...
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.


I usually use VOIP with openphone.com and use her phone when I am on the go... But now need a phone for something simple and was looking to sign up with Public mobile for the $15 / month my wife had, but NOW ITS GONE!!! Dang those bastards. Source: over 3 years ago
Google voice is free! If you need something with a little more power. Voip.ms, sipharmony.com, and openphone.com. Source: about 4 years ago
Hey – I'm one of the founders at OpenPhone so obviously biased here. I'm confident OpenPhone is the superior product and experience in every way. Would be happy to talk to you about it directly and show you a demo. Feel free to book a... Source: almost 5 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 / 3 days ago
When comparing OpenPhone and StackStats.app, you can also consider the following products.

Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs
Compare Aircall to OpenPhone 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 OpenPhone or StackStats.app:

RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Compare RingCentral to OpenPhone or StackStats.app:


Switch is a cloud-based phone system built for Google Apps users.
Compare Dialpad to OpenPhone or StackStats.app:

Grasshopper enables entrepreneurs to build a virtual office that connects callers to employees, wherever they are.
Compare Grasshopper to OpenPhone or StackStats.app: