Introduction: Originally, the Asthma Control Test (ACT) was designed for English-speaking patients using a paper-and-pencil format. The Turkish version of the ACT was recently validated. This article compares the paper-and-pencil and web-based texting formats of the Turkish version of the ACT and evaluates the compatibility of these ACT scores with GINA-based physician assessments of asthma control. Methods: This multicentre prospective study included 431 asthma patients from outpatient clinics in Turkey. The patients were randomized into a paper-and-pencil group (n = 220) and a text messaging group (n = 211). Patients completed the ACT at Visit 1, after 10 +/- 2 days, and at 5 +/- 1 week to demonstrate the reliability and responsiveness of the test. At each visit, physicians assessed patients' asthma control levels. Results: The ACT administered via texting showed an internal consistency of 0.82. For the texting group, we found a significant correlation between the ACT and physician assessments at Visit 1 (r = 0.60, p < 0.001). The AUC was 0.87, with a sensitivity of 78.0% and a specificity of 77.5% for a score of <= 19 for screening "uncontrolled" asthma in the texting group. Conclusion: When the Turkish version of the ACT was administered via either the paper-and-pencil or text messaging test, scores were closely associated with physician assessments of asthma control.