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 4.5.7:

Long time no see! The new Castro update is finally here: Material You design, dynamic colors support, Android 12L and Android 13 support, and many other fixes + improvements!

Detailed changelog:

All versions
Castro - system info 4.5.7


Uploaded:May 12, 2023 at 6:26AM UTC

File size:7.68 MB


Castro - system info 4.5.6


Uploaded:April 21, 2023 at 7:40AM UTC

File size:7.41 MB


Castro - system info 4.5.5


Uploaded:April 6, 2023 at 4:51PM UTC

File size:7.44 MB


Castro - system info 4.5.4


Uploaded:March 29, 2023 at 12:50PM UTC

File size:8.08 MB


Castro - system info 4.5.3


Uploaded:February 12, 2023 at 12:12AM UTC

File size:7.13 MB


Castro - system info 4.5.2


Uploaded:December 15, 2022 at 1:35PM UTC

File size:7.12 MB


Castro - system info 4.5.1


Uploaded:September 16, 2022 at 2:43PM UTC

File size:7.09 MB


Castro - system info 4.5


Uploaded:September 8, 2022 at 4:19PM UTC

File size:7.12 MB


Castro - system info 4.4.2


Uploaded:July 6, 2022 at 8:21AM UTC

File size:5.79 MB


Castro - system info 4.4


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

File size:4.28 MB