Teckapk is probably the best Android APK download site. The site is owned and operated by the same team that created the widely-read Android news site, Android Police, which should reassure you that you're in safe hands.From a security standpoint, teckapk has some robust policies in place:Staff verify all APKs uploaded to the site prior to publishing.The site matches cryptographic signatures for new versions of apps with previous versions (to ensure the true developers signed them).Brand-new apps are matched against other apps from the same developer to verify their legitimacy.The bottom line is that if teckapk cannot verify an APK file's validity, it won't publish the file. Because of this, you won't find any modded APKs, pirated apps, or paid apps on the site.For each app, you can grab older versions, see information pulled from Google Play, and access a list of related apps. If an app you install from teckapk receives an update from Google Play after you have installed it on your device, it will upgrade to the latest version automatically.
