HCHO Detector v1.1.1
APK · 4.3 MB · version code 11 · Android 5.1+ · uploaded Aug 27, 2025
- Signature matches the Google Play version Details
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Answer this to unlock the download. It keeps automated downloaders away.
File information
- Version
- v1.1.1 (11)
- Uploaded
- Aug 27, 2025
- Size
- 4.3 MB
- Requires
- Android 5.1+ (API 22)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 58421b5c6c74deff9af31abe5d723c27
- Signing certificate (SHA-1)
- D2:8A:38:77:6C:2C:C8:9A:1A:5D:4A:C7:B3:C2:66:56:E1:0E:31:88
- Signed by
- CN=Meterbox, OU=CEM, O=CEM DEV, L=KowloonCity, ST=HongKong, C=HK
- File name
- cem-wuhao-hcho-11-71522730-58421b5c6c74deff9af31abe5d723c27.apk
- Package
- cem.wuhao.hcho
- Downloads (all versions)
- 100+
- Age rating
- PEGI 3 · Everyone
Permissions (13)
This version requests 13 permissions, 6 of them sensitive.
- Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read media images Sensitive android.permission.READ_MEDIA_IMAGES
- Read media visual user selected Sensitive android.permission.READ_MEDIA_VISUAL_USER_SELECTED
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Write settings Sensitive android.permission.WRITE_SETTINGS
- Access download manager android.permission.ACCESS_DOWNLOAD_MANAGER
- Control vibration android.permission.VIBRATE
- Disable keyguard android.permission.DISABLE_KEYGUARD
- Download without notification android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
- Mount unmount filesystems android.permission.MOUNT_UNMOUNT_FILESYSTEMS
- Prevent the device from sleeping android.permission.WAKE_LOCK
- System overlay window android.permission.SYSTEM_OVERLAY_WINDOW
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Aug 27, 2025.
- Certificate issued to “CEM DEV” This is the certificate of the Google Play version.
- Same certificate as the 2 other versions checked
Store checks
- Developer signature verified Aug 27, 2025
- Validated against Google Play Aug 27, 2025
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself.
How to install HCHO Detector on Android 5.1+
You'll need about 8.6 MB of free space.
- Download the APK — tap Download APK above (4.3 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap cem-wuhao-hcho-11-71522730-58421b5c6c74deff9af31abe5d723c27.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 58421b5c6c74deff9af31abe5d723c27. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open HCHO Detector — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 5.1+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.