This is the universal build of Castro - system info 4.8.1. It contains native libraries for every CPU architecture (arm64-v8a, armeabi-v7a, x86, x86_64), so it installs on any Android device. The trade-off is size — it's larger than per-architecture variants. Pick this one if you're unsure which CPU your phone has, or if you plan to share the APK with multiple devices.
File size: 8.4 MB • Min Android: 23 • Target Android: 36 • Version code: 365 • Framework: Native (Java/Kotlin) • Permissions: 23
Screenshots
File Information
| Package Name | com.itemstudio.castro |
|---|---|
| Version Name | 4.8.1 |
| Version Code | 365 |
| Architecture | Universal |
| Min Android Version | Android 23 (API 36) |
| Main Activity | com.itemstudio.castro.navigation.NavigationActivity |
| Framework | Native (Java/Kotlin) |
| File Size | 8.36 MB |
| Signature (SHA1) | 3E79F3E4AEDE502E1660CBE682570E8FDE056EAE |
| File Hash (SHA256) | bf1456870973d8e96bb69e8d8192a036e9445c8c1b3c21c83c24076081c63b0a |
What's New
Castro 4.8 "Cell" update is now available and includes full support for Android 16, improvements for HDR display support, and many other fixes and enhancements.
Detailed changelog:
pavlorekun.dev/castro/changelog_release/
Detailed changelog:
pavlorekun.dev/castro/changelog_release/
App Description
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 the "Premium"
"Premium" users will have access to even more features, such as:
• Deep interface customization with various colors and themes;
• Battery monitoring tool to track battery properties;
• 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:
pavlorekun.dev/castro/faq/
Want to help in Castro localization? Visit this page:
crowdin.com/project/castro
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 the "Premium"
"Premium" users will have access to even more features, such as:
• Deep interface customization with various colors and themes;
• Battery monitoring tool to track battery properties;
• 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:
pavlorekun.dev/castro/faq/
Want to help in Castro localization? Visit this page:
crowdin.com/project/castro
Download Castro - system info APK
Fast, free and safe download.
APK Permissions 23
- android.permission.ACCESS_ADSERVICES_AD_ID
- android.permission.ACCESS_ADSERVICES_ATTRIBUTION
- android.permission.ACCESS_NETWORK_STATE
- android.permission.ACCESS_WIFI_STATE
- android.permission.BLUETOOTH
- android.permission.BLUETOOTH_ADMIN
- android.permission.BLUETOOTH_CONNECT
- android.permission.BLUETOOTH_SCAN
- android.permission.FOREGROUND_SERVICE
- android.permission.HIGH_SAMPLING_RATE_SENSORS
- android.permission.INTERNET
- android.permission.POST_NOTIFICATIONS
- android.permission.READ_PHONE_STATE
- android.permission.RECEIVE_BOOT_COMPLETED
- android.permission.RECORD_AUDIO
- android.permission.VIBRATE
- android.permission.WAKE_LOCK
- com.android.vending.CHECK_LICENSE
- com.google.android.c2dm.permission.RECEIVE
- com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- com.google.android.gms.permission.AD_ID
- com.google.android.providers.gsf.permission.READ_GSERVICES
- com.itemstudio.castro.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
APK Verified
The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way.
Similar in Tools
More by Pavlo Rekun
Frequently Asked Questions about Castro - system info APK
This is the universal variant — a single APK that contains native libraries for every CPU architecture. It installs on any Android device but is larger than per-architecture variants.
Yes — the APK's signature has been cryptographically verified against the publisher's signing key. The SHA-256 hash is shown in the File Information panel so you can independently confirm the file matches the original release.
Android 23 (API level 36) or newer. Older devices will refuse the install.
Install a free app like 'CPU-Z' or 'Droid Hardware Info' from the Play Store and look at the ABI / Instruction Set row. Most phones made after 2017 are arm64-v8a; if in doubt, download the universal variant.
All variants are functionally identical — same features, same version. They differ only in which CPU architectures the native code is compiled for, and (sometimes) which screen densities the included graphics target. Pick the one that matches your device for the smallest install size, or pick 'Universal' if you're unsure.