Surge XT
Vital
Helm.sh
Dexed
ZynAddSubFX
TAL-NoiseMaker
synthv1
Synth1 is a software synthesizer. Functionally it is modeled on the Clavia Nord Lead 2 Red Synth.

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, Synth1 seems to be a lot more popular than StackStats.app. While we know about 13 links to Synth1, we've tracked only 1 mention of StackStats.app.
Website, pricing, platforms and company facts side by side.
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Synth1
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| Website | daichilab.sakura.ne.jp | 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 Synth1 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 Synth1 yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Synth1 favorite 25 000 presets banks review
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 Synth1 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 Synth1 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.

If you haven't used it before but are willing to give it a try on your machine and let me know if it works, I'd really appreciate it. It's free and lightweight, and a nice little synth. It can be downloaded here if anyone's willing to... Source: about 3 years ago
Have you tried the free VST called Synth1? you'll probably find these sounds in there, or something that sounds close to this- because the sounds above are pretty straightforward - you can get Synth1 from here -... Source: over 3 years ago
Synth1 is the OG free VA synth and can make some great Synthwave tones: https://daichilab.sakura.ne.jp/softsynth/index.html. 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 Synth1 and StackStats.app, you can also consider the following products.

Open-source subtractive-hybrid synthesizer formerly sold commercially as Vember Audio Surge.
Compare Surge XT to Synth1 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 Synth1 or StackStats.app:

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 Synth1 or StackStats.app:


Dexed is a multi-platform, multi-format plugin synth that is closely modeled on the Yamaha DX7.
Compare Dexed to Synth1 or StackStats.app: