The ASAS app offers a calculator for the Ankylosing Spondylitis Disease Activity Score (ASDAS), a calculator for the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) as well as information on classification, diagnosis, outcome assessment, and treatment of spondyloarthritis.

The app is available in the following languages:

Arabic, Bulgarian, Croatian, Dutch, English, French, German, Greek, Hebrew, Hindi, Italian, Japanese, Korean, Portuguese, Romanian, Russian, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Hungarian, Simplified Chinese

New in the current version:

  • Updated ASDAS calculator
  • BASDAI calculator
  • Possibility to send the result of the ASDAS or BASDAI calculation
  • Updated information materials on spondyloarthritis
  • Usability improvements

ASAS app available on the App store and Google Play:


  • Concept of the app and overall coordination were in hands of Denis Poddubnyy, Joachim Sieper and Désirée van der Heijde.
  • The lay-out and technical aspects are performed by Benhard Krenz.