Kanarek - jakość powietrza

Air quality in Poland.

Tajchert · pl.tajchert.canary

Not rated yet 500K+ downloads v2.9.7 13.7 MB Android 5.0+ PEGI 3 · Everyone

Download APK 13.7 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.9.7 (249)
Updated: Nov 17, 2025 (11 months ago)
APK size: 13.7 MB
Requires: Android 5.0+ (API 21)
CPU support: Any (no native code)
Graphics: OpenGL ES 2.0+
Category: Weather (app)
Listed since: Mar 17, 2021 (at least)
Permissions: 13 (2 sensitive)
Website: tajchert.pl
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Kanarek - jakość powietrza is an app by Tajchert in the Weather category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

It asks for 13 permissions, 2 of them sensitive: precise location and approximate location. The app offers in-app purchases through Google Play and can read the advertising ID that ad and analytics services use.

What's new in v2.9.7

Minor technical fixes - especially for a few crashes and widget updating in the latest Android versions.

Description

From the listing uploaded by “appupdater”.

App informs you about air quality (pollution levels) in Poland. App is only working with POLAND and outside of Poland is mostly useless.

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Nov 17, 2025.
Certificate issued to “Michal Tajchert” This is the certificate of the Google Play version.

Store checks and file details

Developer signature verified Nov 17, 2025
Validated against Google Play Nov 17, 2025
Signed byCN=Michal Tajchert, L=Warsaw, C=48
Signing certificate (SHA-1)C5:3F:2F:F0:EA:9E:41:6B:22:81:9D:D7:90:A9:03:CE:53:31:D8:2B
File MD5aa29c735426bf43e6ae985c42a7ed905
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (13)

Kanarek - jakość powietrza requests 13 permissions, 2 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) pl.tajchert.canary.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Location android.hardware.location