I Gede Etika Ari Wibawa. USABILITY TESTING OF THE IFS PRO ANDROID MOBILE APPLICATION FOR CRYPTOCURRENCY TRADING SIGNAL FORECASTING USING THE CONCURRENT THINK-ALOUD (CTA) TECHNIQUE AND PERFORMANCE MEASUREMENT. MORFAI [Internet]. 2026 Mar. 18 [cited 2026 Aug. 19];6(3):4217-24. Available from: https://radjapublika.com/index.php/MORFAI/article/view/5225