Software Alternatives & Startups
Register | Login

Zamzar VS StackStats.app

Compare Zamzar VS StackStats.app and see what are their differences

Zamzar

Free conversion online of many type of documents (images, text, video, audio...

Rating
0 reviews
Promote on VibeVoted
Alternatives Is it good?
StackStats.app

Advanced analytics for Substack writers. Runs 100% locally, no cloud, no subscription. Discover your superfans, churn risk, and cohort retention.

Rating
0 reviews
Pricing
Paid $39 / Annually (1 Year License)
Promote on VibeVoted
Alternatives Is it good?
KeptPDF
Redact, edit, OCR, and sign PDFs entirely in your browser. The file never leaves your device. Free, no account needed. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Zamzar should be more popular than StackStats.app. It has been mentioned 4 times since March 2021.

social mentions
4 vs 1
File Converter popularity
100% vs 0%
alternatives listed
240+ vs 2

Base details

Website, pricing, platforms and company facts side by side.

Zamzar
StackStats.app
Website zamzar.com stackstats.app
Pricing
Official pricing
Paid $39 / Annually (1 Year License) Official pricing
Company — Startup from the United Arab Emirates · 1 - 9 employees · 2026
Listed in
File Converter PDF Tools Video Converter File Sharing +1
Data Analysis And Visualization Data Analytics Web Analytics

About Zamzar and StackStats.app

In their own words, as submitted to SaaSHub.

Zamzar
StackStats.app

No description of Zamzar 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,...

Read more about StackStats.app

Features and specs

What each product offers, as listed by its team.

Zamzar 6 features
StackStats.app 6 features
  • Ease of Use
    The Zamzar interface is user-friendly and straightforward, making it easy for users of all technical levels to convert files.
  • Supports Multiple Formats
    Zamzar supports a wide variety of file formats, including document, image, video, and audio formats, providing versatility for users.
  • No Software Installation Needed
    Zamzar is a web-based application, so users do not need to install any additional software to use it. This is convenient and saves disk space.
  • Fast Conversion Speed
    The service offers quick conversion times, especially for smaller files, which enhances user productivity.
  • Email Notifications
    Users have the option to receive email notifications when their file conversions are complete, providing flexibility for multitasking.
  • Free Tier Available
    Zamzar offers a free tier with some limitations, allowing users to try the service without a subscription.

Possible disadvantages

  • File Size Limitations
    The free version of Zamzar has a file size limit, which can be restrictive for users needing to convert larger files.
  • Limited Daily Conversions
    Free tier users have a limit on the number of file conversions they can perform each day, which may be a drawback for users with high conversion needs.
  • No Batch Conversion in Free Plan
    Batch conversion, which allows multiple files to be converted at once, is not available in the free plan, potentially affecting efficiency for heavy users.
  • Dependent on Internet Connection
    Being a web-based service, Zamzar requires a stable internet connection. Poor connectivity can hinder the file conversion process.
  • Subscription Costs
    The premium plans, which offer additional features such as larger file size limits and faster conversion speeds, come at a cost that may not be feasible for all users.
  • Privacy Concerns
    Uploading files to an online service can pose privacy and security risks, particularly if the files contain sensitive information.
  • Platforms
    Mac, Windows
  • Pricing
    One-time
  • Data storage
    Local Only
  • Internet Required
    No
  • Account Required
    No
  • AI integration
    Yes (optional)

Analysis

An editorial look at what each product does well and who it suits.

Zamzar
StackStats.app

Overall verdict

  • Zamzar is generally considered a good option for users who need quick and hassle-free file conversions. Its wide format support and convenient cloud-based service make it a reliable choice for everyday conversion needs.

Why this product is good

  • Zamzar is a popular online file conversion service known for its ease of use, supporting a wide range of file formats including documents, images, audio, and video. It allows users to convert files without needing to download any software, making it accessible from any device with internet access.

Recommended for

    Zamzar is recommended for users who need occasional file conversions without the need for advanced features. It's particularly useful for people who work across different file types and prefer a web-based solution to handle these tasks efficiently.

Overall verdict

  • StackStats.app appears to be a niche analytics/tracking tool, but without verified hands-on data or extensive user reviews available, a definitive quality judgment can't be fully confirmed—prospective users should test the free tier or trial before committing.

Why this product is good

  • Likely offers a focused, lightweight dashboard for tracking specific stats without the bloat of larger platforms
  • May provide simple setup and integration compared to more complex enterprise analytics tools
  • Could offer competitive pricing for smaller teams or solo users compared to established competitors
  • Potentially built with a modern tech stack for faster performance and cleaner UI

Recommended for

  • Indie developers or solopreneurs needing simple stat tracking
  • Small teams looking for an affordable alternative to larger analytics suites
  • Users who prioritize simplicity and minimal setup over advanced feature sets
  • Those willing to test a newer or less-established tool in exchange for potentially lower cost or more tailored functionality

Videos

Walkthroughs and reviews on video.

Zamzar 3 videos + Add
StackStats.app 0 videos + Add

Zamzar - A Website Review

More videos

  • - GamerGuy's Reviews - Reviews: S2 E3 - ZamZar File Converter
  • - ZamZar

No StackStats.app videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Zamzar
StackStats.app
100% 100%
File Converter
0% 0%
0% 0%
Data Analysis And Visualization
100% 100%
100% 100%
PDF Tools
0% 0%
0% 0%
Data Analytics
100% 100%

Questions & Answers

As answered by people managing Zamzar and StackStats.app.

What's the story behind your product?

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.

What makes your product unique?

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.

Why should a person choose your product over its competitors?

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.

How would you describe the primary audience of your product?

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.

Which are the primary technologies used for building your product?

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.

User comments

Share your experience with using Zamzar and StackStats.app. For example, how are they different and which one is better?

Log in or Post with

Reviews and articles

External articles and on-site reviews we used to compare the two products.

Zamzar no reviews yet
StackStats.app no reviews yet
  • Top 7 Free YouTube to WAV Converters
    www.geekersoft.com · Sep 2022

    Zamzar is also one of the YouTube to WAV converters not to be missed. It can convert YouTube videos to audio formats such as wav, wma, etc. without downloading or registering. You can copy the ULR or just drag and...

  • How to Convert PDF to Text
    www.geekersoft.com · Jul 2022

    Zamzar is a tool that is a bit strange from its name, but it is a really good PDF to Text tool. According to the founder of Zamzar, its name is derived from the character of "The Metamorphosis".

We have no reviews of StackStats.app yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Zamzar 4 mentions
StackStats.app 1 mention
  • Impossible to convert from EPUB to PDF
    I convert EPUBs to PDFs often with Zamar @ zamzar.com. You are limited to 2 or 3 free conversions per day. When you get to the site, note that "Convert to" format is found by having to scroll down a lot in column 2 under Document... Source: almost 4 years ago
  • Powerpoints With Flash Interactive Animations/Videos
    If your flash file is a simple animation/movie with no interaction, you might be able to find an app or site (zamzar.com maybe?) that'll convert it into a PPT-friendly video format. Source: over 5 years ago
  • How do I open an older PowerPoint file?
    I've heard that zamzar.com can convert files from very old PPT versions. If you haven't tried that already, I'd give it a go. Source: over 5 years ago

View more

  • Ask HN: What are you working on? (November 2026)
    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

Alternatives to Zamzar and StackStats.app

When comparing Zamzar and StackStats.app, you can also consider the following products.

Loading...