App does bot open
The app does not open it sit on the loading screen and hangs. It does not propt to connect my device or do anything else.
How to purchase online?
No idea how to buy the supporting cover?

Archived App (Last seen on 14 May 2026)
This is an archived listing of the app previously available on the App Store.This app allows users to measure blood glucose levels using their iPhone and a special kit. It provides health information, displays results in various formats, and integrates with Apple Health.
3.1.1
November 1, 2023
- Fixed small bugs
1drop is a healthcare app that enables blood tests and health management using a smartphone. It requires a special back cover, cartridge, and lancing device for blood collection and analysis.
With the special back cover and cartridge, you can measure blood components. After injecting a blood sample into the cartridge, the iPhone's flashlight analyzes it, displaying results on the screen.
Currently, 1drop is compatible with iPhone 11. The app also supports iPod devices. The company plans to expand compatibility with more iPhone versions.
No, the results measured from this app are not available to be used for a diagnosis. It is intended for personal health management and tracking.
No, 1drop does not contain advertisements. The app is free to use without any ad interruptions.
The latest version of 1drop is 3.1.1, last updated on November 1, 2023. Updates are released periodically to improve functionality and compatibility.
1drop currently supports Korean and English for its audio guidance and app interface, making it accessible to a broader user base.
Yes, you can easily share your results within the app by pressing the share button. This allows you to share with physicians and families for health-related help or motivation.