Vital
Omnisphere
Unstable by De La Mancha
Korg Legacy Collection
Dumpster Fire by Freakshow Industries
Nexus 2
SketchCassette
VST for FL Studio, Ableton Live, and many other VST supported DAWs. Heavily utilized in EDM.

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, Serum seems to be a lot more popular than StackStats.app. While we know about 30 links to Serum, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
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Serum
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|---|---|---|
| Website | xferrecords.com | stackstats.app |
| Pricing | — | |
| Company | 2014 | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

The dream synthesizer did not seem to exist: a wavetable synthesizer with a truly high-quality sound, visual and creative workflow-oriented interface to make creating and altering sounds fun instead of tedious, and the ability to “go deep” when desired - to create / import / edit / morph...
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.
THIS PLUGIN IS JUST REALLY REALLY GOOD!!! (Serum Plugin Review)
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How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing Serum 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 Serum and StackStats.app. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

What matters though is choosing a good synthesizer. I personally use Serum (~190$) for most things, since it's easy to use and has a big community with a lot of free and paid presets. Source: about 3 years ago
One of the problems I am currently facing is having a large lookup table. I want to have a large set of predefined sound waves that can be manipulated like programs such as Serum. Is this still possible with an MC instead of an MCU?... Source: over 3 years ago
You'll have to find some other alternative for your Text-to-speech needs. Serum has a basic speech synth, Vital uses Amazon's TTS solution, and you'll find plenty more with a quick google search. Source: over 3 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
When comparing Serum and StackStats.app, you can also consider the following products.

Vital is a spectral warping wavetable synthesizer with drag'n'drop modulation workflow and animated preview of the synth's inner workings where needed. Comes with many modulation sources (including audio-rate), MPE support and FX chain.
Compare Vital to Serum 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 Serum or StackStats.app:


Unstable by De La Mancha is a pitch modulation effect tool packed with inspiration and creativity.
Compare Unstable by De La Mancha to Serum or StackStats.app:

Korg Legacy Collection is a suite of VST instruments that acts as an audio plugin software for integrating synthesizers and effects units into your digital audio workstation.
Compare Korg Legacy Collection to Serum or StackStats.app: