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Upscaler

Free#87 of 99 in Image Upscaling Software

Upscaler: Free, open-source Android upscaling with on-device Real-ESRGAN processing. Ranked #87 of 99 in Image Upscaling Software by our editors (6.0/10); pricing: Free plan; best for android users wanting free local upscaling.

6.0/10Editor score

Visit GitHub

Upscaler6.0 Visit GitHub

At a glance

Editor score
6.0 / 10
Pricing
Free plan
Best for
Android users wanting free local upscaling
Free plan
Yes
Paid from
Free
Upscaling method
Ai
Facts checked
22 Sep 2026

Where it wins
- Runs Real-ESRGAN upscaling locally with GPU acceleration
- Supports tiled processing, merging, and drawing modes
- Offers Vulkan or OpenCL support on Android 7 or later
Where it doesn't
- Android-only platform support
- No batch processing for multiple images
- Requires Vulkan or OpenCL support

Our verdict on Upscaler

Upscaler is an open-source Android application for enlarging and sharpening low-resolution images with neural-network-based AI upscaling. It uses the MNN deep-learning framework and a pretrained Real-ESRGAN model, processing image tiles on the device GPU before merging them into a higher-resolution result. The application is aimed at Android users who want free, local image enhancement rather than a browser-based or desktop workflow. Android 7 or later is required, along with Vulkan or OpenCL support.

The published project materials show a focused feature set for image enlargement. Upscaler includes generic and drawing upscaling modes, tiled image processing and merging, and GPU acceleration through Vulkan or OpenCL. Its scale setting is recorded as custom; the repository README benchmarks 16x modes, while the category scale options stop at 8x. This gives the application room for different enlargement workflows, but the practical result depends on the Android device and supported graphics API.

Upscaler is distributed through the project’s GitHub repository and release APKs, with no paid tier described. The main workflow limitation is batch processing: it appears on the README TODO list, so the current workflow is oriented toward processing images individually. Choose Upscaler if Android compatibility, open-source availability, local GPU processing, and Real-ESRGAN matter most. Choose an alternative if you need desktop or multi-platform support, built-in batch handling, or a broader workflow around multiple images.

Your product? Our editors can test Upscaler in depth and publish a review, labelled as paid · from $149/mo →

Upscaler pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on github.com

Upscaler fact sheet

Free plan	Yes
Paid from	Free
Upscaling method	Ai
Maximum scale	Custom
Batch processing	No
API access	Not verified
Desktop app	Not verified
Input formats	Not verified
Deployment	Mobile
Platforms	Android
Support	Community
Built for	Solo, Small business (editorial estimate)
Pricing	Free plan
Website	github.com
Facts checked	22 Sep 2026

Alternatives to Upscaler

See all Upscaler alternatives →

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Featured on iTechGuides

Upscaler is listed in our Image Upscaling Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update