# SDI TDI ERDI PFI — tdisdi.com Mobile App > All-in-one diving app for logging, certifications, and finding dive professionals. (iPhone/iPad app by ITI Holdings, LLC..) - Source: https://appshunter.io/ios/app/sdi-tdi-erdi-pfi/id1608231239 (this page in markdown: same URL + `.md`) - Developer: [ITI Holdings, LLC.](https://appshunter.io/developer/1608231241) - Category: Sports - Price: Free - Rating: 4.27/5 from 149 App Store ratings · 36 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 54 MB - Languages: English - Released: 2022-06-06 - Data updated: 2026-09-02 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/sdi-tdi-erdi-pfi/id1608231239/reviews.md ## What is SDI TDI ERDI PFI? SDI/TDI/ERDI/PFI Mobile App – Your Ultimate Diving Companion Discover the NEW all-in-one diving app from YOUR ONE DIVE FAMILY at Scuba Diving International (SDI), Technical Diving International (TDI), Emergency Response Diving International (ERDI), and Performance Freediving International (PFI). Whether you're logging dives, managing certifications, or exploring new dive sites, the SDI/TDI/ERDI/PFI Mobile App is designed to enhance your diving experience. NEW! Dive Log Feature Track your dives effortlessly with our new Dive Log! Log completed dives, manage training sessions with your instructor, and keep all your dive records in one place. With offline support, you can even save and access logs without an internet connection. Plus, upload up to five images to capture each dive's highlights. Digital Certifications – Always with You Never worry about carrying physical certification cards again! Instantly access, download, and share your SDI, TDI, ERDI, and PFI certifications directly from the app. No syncing or extra payment required—just log in, and your digital certs are ready to go. Personalized Profile Management Easily update your profile, contact information, and photo directly through the app. Stay up to date with your diving credentials anytime, anywhere. Find Dive Centers & Instructors Worldwide Looking for your next adventure? Search for SDI/TDI/ERDI/PFI-affiliated dive centers and instructors no matter where you are in the world. Explore SDI/TDI/ERDI/PFI Content Stay connected with the latest diving insights. Access blogs, videos, and expert content from across all our agencies in one place. ## Key features - Dive log with offline support - Digital certification access and sharing - Personalized profile management - Global dive center and instructor search - Access to diving blogs and videos ## Recent user reviews (10 of 36) All indexed reviews: https://appshunter.io/ios/app/sdi-tdi-erdi-pfi/id1608231239/reviews.md ### 2/5 — You can’t log out *2026-06-19, version 2.2.2* Very annoying that you can’t log out of this app! My young son does not have a phone so I need to be able to log out of one account and into another to show our certificates. This app has no log out feature so you can’t do that. Even after permanently deleting the app after reinstalling it still is logged in and no option to log out and log in as a different user. ### 1/5 — This app needs some work! *2026-04-17, version 2.2.2* This app needs some work, the synch for dive logs with Shearwater Peregrine computers downloads fully according to the app however, they are nowhere to be found in the log function once downloaded. Very frustrating guys! ### 2/5 — App needs a lot of improvement *2026-02-13, version 2.1.9* App needs a lot of improvement ### 1/5 — Crashing after update. *2026-01-21, version 2.1.9* Not usable after the suunto update. Which sucks since I love suunto. Please fix. Will work once then crash. Forcing re install. ### 1/5 — Very glitchy! *2025-12-21, version 2.1.9* It’s so glitchy ### 5/5 — Good *2025-12-20, version 2.1.9* So far so good, i just switched to SDI so it's very new to me but the app is good ### 4/5 — 11/19/2025 Review *2025-11-19, version 2.1.9* Overall, the software seems phenomenal. There are some things that would be nice to see adjusted. The biggest being added iPad OS integration as I predominately utilize an iPad to document dive related information or files. The other thing that would be nice to see implemented would be the ability to import dive logs over more mediums such as spreadsheet or Google Sheets. Again, overall very pleased with the software, especially when needing to access my eCards quickly. ### 5/5 — Great Resource! *2025-09-17, version 2.1.5* The app is a great resource for both divers and professionals! ### 3/5 — Hopefully continues to improve *2025-08-25, version 2.1.5* Good that it has all my certs. Manually loading a dive is slow. Also wish I could see my dive notes when I click on my log details. I can only see them when I go to the edit dive page ### 3/5 — Not great but quickly improving *2025-06-30, version 2.1.3* The app is laggy way too often, especially when selecting dive sites. Lots of buttons on the dive log are unintuitive and take waaaay too long to press. It is getting better fairly quickly though, lots of glitches like the constant sign outs are going away. It’d be nice to see some kid of autofill for consecutive dives or dives at the same site, and a way to input courses and buddies that aren’t a part of the SDI database. ## Frequently asked questions about SDI TDI ERDI PFI ### What does the SDI TDI ERDI PFI app do? The app acts as a comprehensive diving companion. It allows users to log their dives, manage and access digital certifications from SDI, TDI, ERDI, and PFI, update their personal profiles, find affiliated dive centers and instructors worldwide, and explore content from these diving agencies. ### What are the key features of this diving app? Key features include a new dive log with offline support and image uploads, instant access to digital certifications without extra payment, personalized profile management, a global search function for dive centers and instructors, and access to blogs, videos, and expert content from the partner agencies. ### Is there a cost to use the SDI TDI ERDI PFI app? Based on the provided information, the app is free to use. There are no mentions of subscription fees, in-app purchases, or ads, and digital certifications are available without extra payment. ### What kind of diving is this app for? This app is designed for a wide range of diving disciplines, including Scuba Diving International (SDI), Technical Diving International (TDI), Emergency Response Diving International (ERDI), and Performance Freediving International (PFI). It caters to recreational divers, technical divers, and freedivers. ### Can I use the dive log feature offline? Yes, the new dive log feature offers offline support. This means you can save and access your dive logs even when you do not have an internet connection, making it convenient for use in remote diving locations. ## Version history (last 5 releases) ### 2.2.4 — 2026-08-08 Updated search facility feature ### 2.2.3 — 2026-07-20 Social media share of Dive Logs and certifications along with bug fixes ### 2.2.2 — 2026-03-27 Hotfix for the 2.2.1 portal menu changes ### 2.2.1 — 2026-03-27 Portal features including sidebar is available in the mobile app ### 2.1.9 — 2025-11-18 Suunto dive computer integration is now available in our app ## Apps similar to SDI TDI ERDI PFI | App | Rating | Price | Category | | --- | --- | --- | --- | | [Carrera Aficiones](https://appshunter.io/ios/app/carrera-aficiones/id1537306120) | — | Free | Sports | | [AplifitBikeSelection](https://appshunter.io/ios/app/aplifitbikeselection/id1536702940) | — | Free | Sports | | [FEDECANAT](https://appshunter.io/ios/app/fedecanat/id1533177920) | — | Free | Sports | | [UGOLF Academy](https://appshunter.io/ios/app/ugolf-academy/id1542559280) | — | Free | Sports | | [Running Stars](https://appshunter.io/ios/app/running-stars/id1536851080) | — | Free | Sports | | [Royal Troon Members](https://appshunter.io/ios/app/royal-troon-members/id1539151520) | — | Free | Sports | ## Related topics [scuba diving international](https://appshunter.io/ios/topics/scuba-diving-international) · [sdi](https://appshunter.io/ios/topics/sdi) · [tdi sdi](https://appshunter.io/ios/topics/tdi-sdi) · [sdi tdi erdi pfi](https://appshunter.io/ios/topics/sdi-tdi-erdi-pfi) · [sdi scuba](https://appshunter.io/ios/topics/sdi-scuba) · [sdi dive](https://appshunter.io/ios/topics/sdi-dive) · [sditdi](https://appshunter.io/ios/topics/sditdi) · [tdi](https://appshunter.io/ios/topics/tdi) · [zeus sdi](https://appshunter.io/ios/topics/zeus-sdi) · [shearwater peregrine](https://appshunter.io/ios/topics/shearwater-peregrine) · [shearwater](https://appshunter.io/ios/topics/shearwater) · [padi aware foundation](https://appshunter.io/ios/topics/padi-aware-foundation) · [ssi diving](https://appshunter.io/ios/topics/ssi-diving) · [lynnhaven dive center](https://appshunter.io/ios/topics/lynnhaven-dive-center) · [naui dive](https://appshunter.io/ios/topics/naui-dive) · [dive shearwater](https://appshunter.io/ios/topics/dive-shearwater) --- *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 2026-09-02.*