Upscaler

Free plan Android

What Upscaler is

Upscaler is a free Android application that enlarges and sharpens low-resolution images with an AI model. It divides pictures into tiles, processes them on the device GPU, and combines the results into a higher-resolution image. The app uses a pretrained Real-ESRGAN model with the MNN deep-learning framework. Listed modes include generic 4×, generic 16×, and 16× drawing upscaling, while the maximum scale is custom. Images are handled individually because batch processing is unavailable. Upscaler requires Android 7 or newer and hardware with Vulkan or OpenCL support. The project points to its GitHub Releases section for the latest APK and is licensed under GNU GPL v3.0. A listed Vulkan benchmark on a Qualcomm Snapdragon 855 converted a 1920×1080 image to 3840×2160 with generic 4× scaling in three minutes. Release 1.0.0 notes removal of telemetry and internet permission.

Who it suits

It suits Android users who need GPU-based enlargement for individual images and have Vulkan or OpenCL support. The drawing mode may help users handling illustrated images.

What it does well

Free Android image upscaling app
Uses pretrained Real-ESRGAN
Runs processing on the device GPU
Includes 4× and 16× modes
GNU GPL v3.0 licensed

What to know first

Requires Android 7 or newer
Needs Vulkan or OpenCL support
No batch processing
Latest APK comes from GitHub Releases

Verdict

Upscaler provides device-based AI enlargement with several scaling modes and a drawing option. Hardware requirements and the lack of batch processing define how practical it will be for a particular Android workflow.

Facts from Upscaler's own pages

Batch processing: Batch processing is listed as a TODO. · github.com, 12 Oct 2026
Benchmark: On a Qualcomm Snapdragon 855 using Vulkan, the listed 4x benchmark converts 1920×1080 to 3840×2160 in 3 minutes. · github.com, 12 Oct 2026
Device requirements: The app requires Vulkan or OpenCL support and Android 7 or above. · github.com, 12 Oct 2026
Distribution: The repository directs users to its Releases section for the latest APK. · github.com, 12 Oct 2026
Download: The README directs users to the Releases section for the latest APK. · github.com, 12 Oct 2026
Framework: The app is built with the MNN deep learning framework. · github.com, 12 Oct 2026
Free plan: Yes · github.com, 22 Sept 2026
License: The project is licensed under GNU GPL v3.0. · github.com, 12 Oct 2026
Maker: The GitHub profile identifies the maker as Ege Öz and lists Turkey. · github.com, 12 Oct 2026
Maximum scale: custom · github.com, 22 Sept 2026
Model: It uses a pretrained Real-ESRGAN model. · github.com, 12 Oct 2026
Performance: On a Qualcomm Snapdragon 855 with Vulkan, the README reports 3 minutes for generic 4× upscaling of a 1920×1080 image to 3840×2160. · github.com, 12 Oct 2026
Processing: The app processes image tiles on the device GPU and merges them into a high-resolution image. · github.com, 12 Oct 2026
Product type: Upscaler is a neural-network-based image upscaling application for Android. · github.com, 12 Oct 2026
Purpose: Upscaler is an AI image upscaling app for sharpening low-resolution pictures. · github.com, 12 Oct 2026
Release changes: The 1.0.0 release notes say telemetry and internet permission were removed, along with the Google Play variant and Patreon/Telegram links and prompts. · github.com, 12 Oct 2026
Requirements: It requires Vulkan or OpenCL support and Android 7 or above. · github.com, 12 Oct 2026
Scaling modes: The README lists generic 4× and 16× modes and a 16× drawing mode. · github.com, 12 Oct 2026
Upscaling method: ai · github.com, 22 Sept 2026
Upscaling modes: The README lists generic 4x, generic 16x, and drawing 16x benchmark modes. · github.com, 12 Oct 2026

Where Upscaler stands on Freedom251

Image Upscaling Software#72 of 99