
CloudConvert
Convertio
Online Convert
Format Factory
Zamzar
HandBrake
iLovePDF
Convert & compress everything in 2 clicks!

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, File Converter seems to be a lot more popular than StackStats.app. While we know about 14 links to File Converter, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | file-converter.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 File Converter 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 File Converter yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
BEST DVD/VIDEO/FILE CONVERTER BY WONDERFOX REVIEW
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing File Converter 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 File Converter 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.


File Converter(https://file-converter.org/) is an all-in-one converter that allows you to convert and compress one or several files to other formats easily and quickly. It supports to convert audio, video, image and...
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 recently found a file converter for Windows 10 that works through the context menu when right clicking a file. It can be found here: https://file-converter.org/. Source: over 3 years ago
Download and install the File Converter, right-click on an image file such as jpg, png, etc. And hover over "File Converter" which should be above "Open with," go to "Configure presets," go to webp, set the quality to something... Source: over 3 years ago
To get away from websites, I use this https://file-converter.org/. Source: almost 4 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 / 4 days ago
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Format Factory is software that allows the user to convert media into various file formats. The software is a product of PC Free Time, a Chinese software development company. Read more about Format Factory.
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