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.


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.

The app is fully translated to the languages, which are represented in the ASAS Slide Library.

  • Translation into Chinese was done by Feng Huang.
  • Translation into Taiwanese (Chinese Traditional) was done by James Wei.
  • Translation into Croatian was done by Simeon Grazio.
  • Translation into French was done by Félicie Costantino and Maria Antonietta D’Agostino.
  • Translation into German was done by Hildrun Haibel and Joachim Sieper.
  • Translation into Greek was done by Xenofon Baraliakos and Dimos Patrikos.
  • Translation into Hungarian was done by Pál Géher and Sándor Szántó.
  • Translation into Italian was done by Salvatore Scarpato and Ignazio Olivieri.
  • Translation into Portuguese was done by Percival Sampaio-Barros.
  • Translation into Russian was done by Denis Poddubnyy.
  • Translation into Spanish was done by Victoria Navarro, Ruben Burgos-Vargas, and Eduardo Collantes.
  • Translation into Turkish was done by Salih Özgöcmen and Nurullah Akkoc.
  • Translation into Japanese was done by Mitsumasa Kishimoto.