Eye'sTest vs AgeTrace

Thank you — more than 120,000 people have used this app. Take a 10-second vision check on your iPhone's high-resolution display every day, and keep an eye on how much screen work is straining your eyes. [Features] - The Landolt C ring rotates randomly, so you can test as many times as you like without memorizing the pattern - High-resolution displays are supported: check your visual acuity up to 2.0 - Acuity levels from 0.01 to 0.09 are checked in 0.01 steps - At 20 cm from the screen, you can measure from 0.02 to 0.4 - At 30 cm: 0.03 to 0.6 / at 40 cm: 0.02 to 0.8 / at 50 cm: 0.02 to 1.0 - At 60 cm: 0.02 to 1.2 / at 70 cm: 0.02 to 1.4 / at 80 cm: 0.02 to 1.6 - At 90 cm: 0.02 to 1.8 / at 100 cm: 0.02 to 2.0 - The rings are drawn following the international Landolt C standard formula as closely as possible - For measurements at 60 cm or more, we recommend two people: one holds the device, the other answers - Even without Premium, your last 7 records are kept on your device (never sent anywhere). Premium keeps up to 365 records with charts and CSV export - Ad-free [How to use] - Launch the app and set the distance from your eyes to the screen (10 cm to 100 cm) - Close one eye and tap the arrow button that matches the direction of the opening in the "C" [Notes] - The results of this app cannot be used as official health examination results - Stop using the app immediately if you feel unwell

Understand your numbers. Track their change. AgeTrace helps you calculate and track selected health-related measures using established formulas and published research methods. Phenotypic Age Calculate Levine Phenotypic Age using chronological age and nine commonly measured blood biomarkers. Heart Age Estimate Heart Age using the Framingham cardiovascular risk model and established cardiovascular risk factors. Metabolic Health Track five commonly used metabolic syndrome criteria: waist circumference, triglycerides, HDL cholesterol, blood pressure, and fasting glucose. Kidney Function Calculate estimated glomerular filtration rate (eGFR) using the 2021 CKD-EPI creatinine equation. Liver Fibrosis Index Calculate FIB-4 using age, AST, ALT, and platelet count. Track Changes Over Time Save measurements from different dates, review your history, and view trends for each calculation independently. Understand Your Results Each report includes reference context explaining what the calculated value represents within the published method. AgeTrace presents your measurements without making personalized diagnoses or treatment recommendations. Private by Design Health and laboratory data entered into AgeTrace are stored locally on your device and are not uploaded by AgeTrace. No account or membership is required. Export and Backup Export your measurement history as CSV or create a local backup of your AgeTrace data. AgeTrace is intended for informational and educational purposes only. It does not provide medical advice, diagnosis, or treatment and is not a substitute for professional medical care.