# Activity Monitor: cpu, battery

> Advanced system task manager, device info, battery health, ram usage

Canonical page: [https://chrome-stats.com/d/com.ddm.deviceinfo](https://chrome-stats.com/d/com.ddm.deviceinfo)

## Overview

- **ID:** `com.ddm.deviceinfo`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** BlindZone
- **Category:** TOOLS
- **Downloads:** 285,674
- **Rating:** 4.04 / 5 (1,839 ratings)
- **Version:** 2.1
- **Last updated:** 2026-03-07
- **First published:** 2017-11-12
- **Publisher country:** TR
- **Size:** 24 MB
- **Data as of:** 2026-03-31
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.ddm.deviceinfo)
- **Website:** [https://blindzone.org](https://blindzone.org/)
- **Privacy policy:** [https://blindzone.org/eula.php](https://blindzone.org/eula.php)

## Description

Activity Monitor is a powerful yet lightweight Chrome extension designed to optimize the performance and health of your Android smartphone or tablet. This advanced system task manager provides detailed insights into CPU load, RAM usage, battery consumption, and temperature, enabling users to identify and close unnecessary background processes that slow down their devices.

Key features include real-time monitoring of network activity, battery charge levels, voltage, and temperature graphs to prevent overheating and prolong battery life. The extension also offers deep system analysis with access to critical file system parameters and comprehensive device information such as serial numbers, SIM card details, CPU specs, and display parameters. Perfect for users seeking to enhance their device's efficiency and longevity without investing in new hardware.

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.BATTERY_STATS`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.GET_TASKS`
- `android.permission.INTERNET`
- `android.permission.KILL_BACKGROUND_PROCESSES`
- `android.permission.NFC`
- `android.permission.PACKAGE_USAGE_STATS`
- `android.permission.READ_BASIC_PHONE_STATE`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.READ_PHONE_STATE`
- `android.permission.RUN_USER_INITIATED_JOBS`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.amazon.privacypass.ATTEST`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.ddm.deviceinfo.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Summary: Users largely rate the app as useful for revealing background activity and hidden apps and for general device monitoring, with several praising its ability to expose security issues. However, the majority of criticisms center on (a) lack of CPU usage or process monitoring and confusion between CPU/RAM data, (b) intrusive permissions and privacy concerns including perceived data collection/ads, (c) stability and compatibility problems on Android 14/One UI and some devices, and (d) perceived redundancy or poor UX. The overall sentiment is mixed: helpful in theory, but plagued by privacy, permissions, and compatibility issues.

### Pros

- Reveals background activity and hidden apps, aiding security awareness.
- Provides useful device information and monitoring data.
- Generally easy to use and yields positive results.
- Found hidden apps and improved device performance on some devices.
- Helps users notice suspicious activity (e.g., Netlink) and alerts.

### Cons

- No CPU usage or process monitoring; app seems to show RAM or general data instead.
- Forced permissions and privacy concerns; broad data access and perceived data collection/ads.
- Compatibility/stability issues on Android 14/OneUI 6.0 and on certain devices (e.g., Nvidia Shield); bugs.
- Perceived lack of value or redundancy; some users label it as malware/ads.
- User experience friction: frequent prompts and navigation difficulties.

## Similar extensions and apps

- [OS Monitor: system manager](https://chrome-stats.com/d/com.ddm.activity) — 207,551 users, 4.19 / 5
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- [Device Info CPU, RAM & Battery](https://chrome-stats.com/d/com.codentricks.deviceinfo) — 712 users
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- [Device Info Pro: CPU & Battery](https://chrome-stats.com/d/com.cpumaster.batterymonitor.cpumonitor) — 82,847 users, 4.50 / 5
- [CPU Monitor](https://chrome-stats.com/d/com.falcon.cpumonitor) — 5,426 users
- [DeviceLab Monitor](https://chrome-stats.com/d/com.devicelab.monitor) — 42 users
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- [CPU MONITOR Pro](https://chrome-stats.com/d/cpu.monitorpro) — 47 users
- [Device Health Monitor](https://chrome-stats.com/d/com.theappstack.app.devicehealthmonitor) — 2,368 users
- [Device Info: CPU & Battery](https://chrome-stats.com/d/com.deviceinfo.monitor.cpuz.battery.temperature) — 8,283 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.ddm.deviceinfo)