NoiseXTerminator review
Astronomy-trained denoising with separate noise controls and local processing.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
NoiseXTerminator is a local machine-learning noise-reduction tool designed for astrophotography. It suits solo photographers and small teams who want to denoise astronomical images through a command-line interface or a plug-in workflow in PixInsight or Photoshop. Its training is specific to astronomical images, so photographers looking for a general-purpose photo denoiser may prefer a tool designed for broader image types.
Noise control is more fine-grained than a single strength adjustment: users can separate intensity from color noise and high-frequency from low-frequency noise, then adjust denoise strength and process iteratively. The model uses discriminative, non-generative training, intended to reduce noise while limiting artifacts and invented detail. Processing is local on supported Windows, macOS, and Linux systems, with CPU or GPU acceleration depending on platform and configuration. That makes it a fit for desktop workflows, but not a cloud-processing service.
The published plan is a $59.95 one-time permanent license, with standalone CLI, PixInsight, and Photoshop license options. The Photoshop version is also compatible with Affinity Photo. A free trial is offered, though its duration and payment-card requirements are not specified on the product page. Choose NoiseXTerminator if your work centers on astronomical images and its supported desktop workflows; consider an alternative if you need broader photographic coverage or a dedicated batch workflow. Support is available through tickets and documentation.
NoiseXTerminator pros and cons
- Where it wins
- Separates intensity and color noise, plus high- and low-frequency noise
- Available as a CLI tool and PixInsight or Photoshop plug-in
- Runs locally and supports GPU acceleration on compatible systems
- Where it doesn't
- The machine-learning training is specific to astronomical images
- Costs $59.95 one-time, with no free plan
- Affinity Photo compatibility is through the Photoshop version
NoiseXTerminator fact sheet, pricing and score →
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