ATAR Calculator is an iPhone application developed by Max Brogno. It falls under the category of Education & Reference and is available for free. This app helps students understand and predict their final VCE, HSC, QCE, or WACE results.

The ATAR Calculator works by allowing users to enter their subjects and predicted study scores. Using up-to-date data from previous years, the app provides an estimated ATAR (Australian Tertiary Admission Rank). It takes into account subject scaling and ranking, using the same rules that will be applied to the user's results at the end of the year.

The app claims to be highly accurate, as it utilizes a wide range of data from actual results obtained by other year 12 students. However, it is important to note that the predicted ATAR is just an estimation, and the final results may vary.