APKGrabber is a fork of APKUpdater. Big thanks and of course all credits go to rumboalla. I try to develop new features and maintain the software to stay available on latest android devices, but don't expect weekly updates.
From version APKGrabber 1.6.3:
Enhanced Aptoide error handling

Fixed Aptoide store opening by using native DownloadManager
By clicking Aptoide, a direct download is initiated and afterwards the installation begins
Allowed cleartext http transfer for Android 9 DownloadManager
Added handling for app not found responde of Aptoide

Implemented Aptoide as a source
(Android 2.3+)
Latest: 1.1.8 on March 19, 2019
(Android 4.0+)
Latest: 1.6.3 on August 11, 2019
All versions
August 11, 2019
May 11, 2019
May 5, 2019
April 14, 2019
April 2, 2019
March 21, 2019
March 19, 2019