WriteStack vs StackSweller: Which Substack Notes Scheduler Should You Use?

WriteStack vs StackSweller—two tools solving the same problem: scheduling Substack notes. But they take different approaches. Here's how to pick the right one for you.

The Problem

Substack doesn't let you schedule notes.

This means you're stuck manually posting throughout the day, trying to remember to publish at optimal times, or just skipping notes altogether because it's too much hassle.

Both WriteStack and StackSweller fix this problem. But they work differently. When comparing WriteStack vs StackSweller, the key differences come down to how they publish and what features they offer.

The Big Difference: Your Computer Stays On or Not

WriteStack uses a Chrome extension. Your computer needs to be running when your notes are scheduled to publish. You can put it to sleep between scheduled times, but Chrome must be open when a note goes live.

StackSweller is cloud-based. Schedule your notes, close your laptop, go to the beach. Your notes publish automatically from their servers.

If you work from a desktop that's always on anyway, this difference doesn't matter much. If you travel with a laptop or shut it down every night, it matters a lot.

Content Repurposing: Both Tools Do It

Both WriteStack and StackSweller let you repurpose existing content.

You can import your long-form articles and automatically turn them into short-form notes with either tool. WriteStack does this. StackSweller does this too.

Here's why this matters: You've probably written dozens of articles already. Maybe hundreds. That content is just sitting there, bringing in subscribers once when you publish it, then doing nothing.

Both tools let you take a 2,000-word article and generate 10-15 notes from it. Schedule them throughout the week. Get more value from work you've already done.

They also both generate new notes from scratch using AI. They learn your writing style and create original content based on your niche.

So on content repurposing, they're tied. The real differences come down to how they publish and what extra features they include.

The Speed and Complexity Trade-Off

With WriteStack, you need to pick which AI model to use for generating notes.

This sounds like flexibility, but it's actually a headache. Different models need different prompts. Claude works one way, GPT works another. You're constantly tweaking and testing to figure out which combination produces notes that actually sound like you.

Every time you want to generate notes, you're making decisions: Which model? Which prompt? How many notes? It slows you down.

StackSweller removes this entirely. No model selection. No prompt engineering. The workflow is optimized for speed—as few clicks as possible to go from article to scheduled notes. You paste your content, it generates notes that match your style, you schedule them. Done.

If you enjoy experimenting with AI models and fine-tuning prompts, WriteStack gives you that control. If you just want to generate notes fast without the technical overhead, StackSweller is built for that.

What Each Tool Offers

Both give you:

• Notes scheduling
• Analytics on your top performing notes
• Email Support 24/7
• AI-powered note generation

WriteStack also gives you:

• More AI generation credits (50 to unlimited per month)
• Ability to queue up to 100+ notes at once
• Search through millions of Substack notes
• "Radar" feature to find potential clients
• Detailed analytics dashboard

StackSweller also gives you:

• Cloud-based publishing (computer off)
• No model selection required (one-click solution)
• Faster note generation (optimized workflow with minimal clicks)
• Better value for serious writers (more notes for less money)
• Simpler interface

Feature Comparison

The Pricing: Better Value for Serious Writers

WriteStack: $16.99 to $59.99 per month
StackSweller: $19 to $39 per month (beta pricing)

The entry-level pricing is similar. But here's where it gets interesting for serious writers:

WriteStack Standard: $39.99/month - Queue up to 100 notes
StackSweller Pro: $29/month - 50 scheduled notes

If you're posting consistently (2-3 times per day), you need around 50 notes per month. StackSweller gives you that capacity for $29. WriteStack charges $39.99 for similar usage.

For serious writers who publish regularly, StackSweller is the better deal. You get cloud-based scheduling, no model selection complexity, and lower pricing.

Which One Should You Choose?

Pick WriteStack if:

• Your computer is always on
• You enjoy experimenting with different AI models
• You want to find potential clients through their Radar feature
• You need to search through millions of Substack notes
• You need to queue 100+ notes at once

Pick StackSweller if:

• You travel with a laptop or shut it down regularly
• You want true set-it-and-forget-it cloud-based scheduling
• You don't want to mess with model selection or prompt engineering
• You want to generate notes quickly with minimal clicks
• You're a serious writer posting 2-3 times per day
• You want better value (more notes for less money)
• You prefer simpler, one-click solutions

The Truth

Both tools work. Both will help you stay consistent. Both will grow your audience faster than posting manually.

You're not making a life-or-death decision here.

But the differences matter:

WriteStack requires your computer to be running. You need to pick AI models. You need to understand prompt engineering. It's more complex, but gives you more control and extra features like Radar and note search.

StackSweller is cloud-based. No model selection. No prompt tweaking. Optimized workflow with minimal clicks. You write, it generates fast, it publishes. And for serious writers posting regularly, it's cheaper.

If you want more features and control, WriteStack. If you want simplicity and better value, StackSweller.

Pick the one that matches your workflow and budget.

Related: Learn more about how to schedule Substack notes or discover the best time to post Substack notes for maximum engagement.