A report card for Android software, written so the grade comes first and the reasons follow straight after.
A 4.3 and a 4.4 look like the same number to most people. A grade does not. The APK Review turns each rating into a letter band, so the gap between an excellent app and an adequate one is visible in a single look, the way a school report reads.
From the rating and the number of people behind it, applied the same way to every app. Nobody pays for a better mark, and a grade only moves when the ratings do.
Every page is generated as plain HTML before you arrive. There is nothing to boot up and nothing to wait for; the register is already on the page.
If an app deserves a higher mark, or a lower one, send it through the contact form. Every appeal is read.
Repackaged installers, cracked premium unlocks and apps using a publisher name that is not their own. Those do not receive a low grade; they are left off the register entirely.
The APK Review is kept by a small group who wanted app listings to be read as quickly as a school report, rather than decoded like a spreadsheet.
Grades are recalculated as ratings change. Apps whose publishers stop maintaining them come off the register instead of keeping an old mark.
A grade you cannot explain is just an opinion with a letter on it.