Aronia mitschurinii is a super-fruit renowned for having exceptionally high antioxidant content. Research has shown that the peak for antioxidants in Aronia occurs early in the ripening process when brix content is low. Harvesting the crops during the peak of antioxidants is important for pharmaceutical applications, yet harvesting when the fruits are fully ripened would be preferable for use in food products. The issue with harvesting Aronia is that there is no visual difference to show the ripening of the fruit. Our approach involves using a glucometer to assess both antioxidant and brix content. The most valuable antioxidants found are anthocyanins, with a majority consisting of Cyanidin-3-Glucoside (C-3Glu), which undergoes glucoside bond hydrolysis under acidic conditions. Research data indicates that at neutral pH conditions the reading on the glucometer is proportional to brix readings on a refractometer, whereas under acidic pH conditions the reading is proportional to the C-3Glu content read using a UV/Vis spectrophotometer. A device was developed for in-field testing with the accuracy being evaluated and compared to laboratory results. To accommodate the glucometer's range, juice dilution was employed, and data analysis determined an optimal dilution ratio. The data shows that the values of anthocyanins and brix are consistent regardless of if the glucometer, UV/Vis, or refractometer was used. Additionally, glucose and C-3Glu standards underwent testing on the glucometer with various dilutions to observe the relationship between glucometer measurements and concentration. This study presents the findings of the methodologies, and the calibration curve results.