Castro is a huge collection of information about your device and a set of tools for monitoring its status. This allows you to check the performance of your device in real-time!

Large collection of the information
Castro processes and displays a huge amount of information, namely:

• Detailed processor statistics (CPU and GPU);
• Battery monitoring;
• Consumption of all kinds of memory;
• Data usage via Wi-Fi and mobile networks;
• Real-time sensors data with useful graphs;
• Detailed information about device's cameras;
• Full list of available audio and video codecs;
• Monitoring temperatures of the device;
• And many other features, including DRM and Bluetooth!

The most important thing in the "Dashboard"
If you are not interested in too detailed information in a larger volume, you can always use the "Dashboard" window, which collects all the most important information - CPU usage, battery status, network usage, and memory load on the device.

More control with useful tools
• Share your device information using "Data export";
• Test your display state via "Screen tester";
• Check the noise around you with "Noise checker".

Even more features with "Premium"
• Deep interface customization with various colors and themes;
• Configurable home-screen widget, with information about battery, memory, and more;
• Network traffic speed monitor to track your connection speed;
• CPU usage monitor to keep abreast of frequency usage;
• PDF format for information exporting.

FAQ and localization
Looking for answers to frequently asked questions (FAQ)? Visit this page:

Want to help in Castro localization? Visit this page:

From version Castro - system info 4.4:

Castro 4.4 features a full rewrite of the home-screen widget, allowing to add of multiple instances with different settings and an updated refresh mechanism. Also, added full support for Android 12 (which includes new information) and a new tool called "Root analyzer" for detailed check for Root access presence.

Detailed changelog:

All versions
Castro - system info 4.4


Uploaded:October 25, 2021 at 8:58AM UTC

File size:4.28 MB


Castro - system info 4.3.2


Uploaded:August 4, 2021 at 9:26PM UTC

File size:4.74 MB



Uploaded:May 9, 2021 at 6:39PM UTC

File size:4.65 MB


Castro - system info 4.3
April 7, 2021


Uploaded:April 7, 2021 at 10:33AM UTC

File size:4.81 MB


Castro - system info 4.2.2


Uploaded:March 1, 2021 at 10:05PM UTC

File size:4.76 MB


Castro - system info 4.2.1
February 4, 2021


Uploaded:February 4, 2021 at 1:02AM UTC

File size:4.44 MB


Castro - system info 4.2
December 22, 2020


Uploaded:December 22, 2020 at 12:06PM UTC

File size:4.57 MB


Castro - system info 4.1
December 10, 2020


Uploaded:December 10, 2020 at 3:57PM UTC

File size:4.51 MB


Castro - system info 4.0.5
October 29, 2020


Uploaded:October 29, 2020 at 12:21AM UTC

File size:4.53 MB


Castro - system info 4.0.3
August 11, 2020


Uploaded:August 11, 2020 at 4:21PM UTC

File size:4.62 MB