Bengaluru, Feb 24 (IANS): Hash Education, a start-up based here, has launched a smartphone app for school students to instantly clarify subject-related doubts from experts who have passed out of top institutions in the run up to their annual board exams that are round the corner.

Available on Google Play Store and scheduled to be free for a month to all students who sign up until March 31, the 24x7 HashLearn Now app helps students get one-on-one tutoring in Mathematics, Physics and Chemistry from tutors who went to Indian Institutes of Technology (IIT) and Birla Institute of Technology and Science (BITS).

"Our vision is to provide a high-quality private tutor to every student at scale, on-demand and at an affordable price - the holy grail of test prep," Jayadev Gopalakrishnan, CEO, HashLearn, said in statement.

HashLearn Now covers all school board examination and national entrance tests for students from classes eight to 12.

The app learning entails a student choosing a topic and uploading an image of the problem he wants to be taught to start the session.

Instantly the student gets connected to a subject expert who deciphers the problem and makes the students learn to end the session, the student can rate the tutor and complete the process.

HashLearn Now also offers thousand of practice questions for students to hone their skills. They can also be downloaded by giving a missed call to a specified number or by sending an SMS.