# d-Nav > FDA-cleared prescription app for insulin dose calculation and diabetes management. (iPhone/iPad app by Hygieia Inc..) - Source: https://appshunter.io/ios/app/d-nav/id1368776271 (this page in markdown: same URL + `.md`) - Developer: [Hygieia Inc.](https://appshunter.io/developer/1368776270) - Category: Medical - Price: Free - Rating: 4.20/5 from 5 App Store ratings - Age rating: 4+ - Requires: iOS 10.0 · 119 MB - Released: 2019-03-16 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/d-nav/id1368776271/reviews.md ## What is d? We believe there is a better way to use insulin! d-Nav® is here to improve and simplify insulin therapy. Hygieia's d-Nav® app is an FDA-cleared prescription-only product that calculates the next dose of insulin to aid in optimizing insulin management. If you are using any type of insulin to treat your type 2 diabetes, but haven’t yet reached your blood glucose or Hemoglobin A1c targets, talk to your doctor about getting a referral to the d-Nav Insulin Guidance Service to use the d-Nav app. The d-Nav app allows your diabetes care team to customize an insulin treatment plan for you. Once they set up your specific plan, the d-Nav app will guide you dose by dose until your treatment targets are reached. Your team will be able to follow your progress and edit your plan as needed. Once installed, the d-Nav app will provide you with a recommended dose prior to each insulin injection. To get a recommended dose you start by measuring your glucose then entering your sugar level into the app (if you’re using a connected meter this step happens automatically). You will be prompted to select an event based on your insulin treatment plan, for instance “Lunch,” and d-Nav would then recommend your insulin dose. All you have to do is to inject the recommended amount of insulin. People that are using the d-Nav service often state that “this has taken the guess work out of insulin therapy.” If you feel you need help managing your insulin, don’t wait – contact your doctor today and ask for a referral. Disclaimer: You should always seek a doctor’s advice in addition to using this app before making any medical decisions. ## Key features - Prescription-only insulin dose calculation - Customizable insulin treatment plans - Glucose level input for dose recommendations - Progress tracking for diabetes care teams - Simplifies insulin therapy management ## Frequently asked questions about d ### What is d-Nav used for? d-Nav is an FDA-cleared, prescription-only medical app designed to improve and simplify insulin therapy for individuals with type 2 diabetes. It calculates recommended insulin doses to help users reach their blood glucose and Hemoglobin A1c targets. ### How does d-Nav work? After a healthcare team sets up a customized insulin treatment plan, d-Nav guides users dose by dose. Users input their glucose levels (or use a connected meter), select an event like 'Lunch,' and d-Nav recommends the insulin dose to inject. ### Who can use d-Nav? d-Nav is for individuals using any type of insulin to treat type 2 diabetes who have not yet reached their blood glucose or Hemoglobin A1c targets. A doctor's referral to the d-Nav Insulin Guidance Service is required. ### Is d-Nav available on all devices? Based on the provided information, d-Nav is supported on iPhone and iPod devices. It is not specified if it is available on Android or other platforms. ### How often is d-Nav updated? The latest version of d-Nav is 1.3, which was last updated on September 15, 2021. Further information on update frequency is not available. ### What is the user rating for d-Nav? d-Nav has a rating of 4.2 stars based on 5 user ratings. This suggests a generally positive user reception. ### Does d-Nav have ads? No, d-Nav does not contain advertisements. The app is free to use and does not have in-app purchases. ### What is the age rating for d-Nav? d-Nav has an age rating of 4+. This indicates it is suitable for users aged 4 and above, though its medical nature implies it is intended for adult users with diabetes. ## Version history (last 3 releases) ### 1.3 — 2021-09-15 iOS Dark Mode handled, Phone App reports data to server without requiring being 10 seconds in the app first ### 1.2 — 2021-05-17 Version 1.2 Includes feature enhancements and global expansion capability. ### 1.0 — 2019-03-15 No release notes. ## Apps similar to d | App | Rating | Price | Category | | --- | --- | --- | --- | | [Diabetes Cockpit](https://appshunter.io/ios/app/diabetes-cockpit/id1580577116) | 4.6 (58) | Free | Medical | | [iLet App](https://appshunter.io/ios/app/ilet-app/id1553486890) | 4.3 (101) | Free | Medical | | [MyCite®](https://appshunter.io/ios/app/mycite/id1539735389) | 4.7 (11) | Free | Medical | | [Healthwise Pharmacy](https://appshunter.io/ios/app/healthwise-pharmacy/id1631428701) | — | Free | Medical | | [BlueStar Diabetes](https://appshunter.io/ios/app/bluestar-diabetes/id700329056) | 4.2 (125) | Free | Medical | | [Daily Dose — Insulin Log](https://appshunter.io/ios/app/daily-dose-insulin-log/id1582231714) | 4.8 (77) | Free | Medical | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*