Comparison
NightScape Stacker vs. Sequator
Sequator is a well-regarded free stacking tool, and if you're on Windows and stacking is all you need, it earns its reputation. The gap shows up when you want a finished image: denoising, star removal or reduction, and gradient removal all require separate apps that add cost and friction. NightScape Stacker covers that entire workflow in one purchase, and it runs on Mac and Linux too.
Sequator
Sequator has been a go-to for landscape astrophotographers for years. It handles the core stacking problem well: aligning frames, separating star movement from foreground, and blending exposures. And it does all of that for free. The community around it is active, and the results are solid.
The hard limit is scope. Sequator stacks. Everything after that (noise reduction, removing or reducing stars, correcting light pollution gradients) is out of scope for the tool. That's not a flaw; it's a deliberate boundary. But it means you're not done when Sequator finishes.
To take a Sequator output to a finished image, most photographers reach for Topaz DeNoise AI (around $99 per year on subscription), a star removal tool, and GraXpert or PixInsight for gradient correction. PixInsight alone runs $330. The free entry point can quietly become a $400-plus multi-app workflow with no common interface or file handoff between the tools. Sequator is also Windows-only; if you shoot on a Mac or Linux machine, it isn't an option at all.
NightScape Stacker
NightScape Stacker is built for the same subject: Milky Way landscapes from a tripod, foreground in frame. It covers the full path from raw frames to a file ready for final editing. Stack, denoise, remove or reduce stars, and correct gradients all happen inside one application, in a four-step workflow designed to move in sequence.
The pricing is a one-time purchase of $99, covering two seats with a perpetual license. No subscriptions, no annual renewal decisions. The AI models that power denoising and star tools run locally on your machine. No internet connection required, and your photos never leave your computer.
NightScape Stacker runs on Mac, Windows, and Linux. If you're on a Mac or Linux machine, it's a direct replacement for the Sequator-plus-plugins workflow. If you're on Windows and already own denoising and gradient tools, the comparison is closer, though consolidating into one app with one interface is worth weighing against what you already have.
One app. Full workflow. No subscriptions.
$99 one-time · 2 seats · Mac, Windows, Linux · AI runs locally
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