# CORE by Stay Sharp — Every element, demonstrated. > Figure skating resource with video demos, tutorials, and diagrams for all levels. (iPhone/iPad app by Mark Fitzgerald.) - Source: https://appshunter.io/ios/app/core-by-stay-sharp/id6450906479 (this page in markdown: same URL + `.md`) - Developer: [Mark Fitzgerald](https://appshunter.io/developer/477164822) - Category: Sports, Health & Fitness - Price: Free with in-app purchases - Rating: 5.00/5 from 4 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 608 MB - Languages: American English - Released: 2023-08-02 - Data updated: 2026-11-14 - Monetization: subscription - User reviews in markdown: https://appshunter.io/ios/app/core-by-stay-sharp/id6450906479/reviews.md ## What is CORE by Stay Sharp? Core by RTI is now CORE by Stay Sharp. It's the same library under a new name, and existing subscriptions carry over. CORE is a figure skating reference organised the way skating is taught. Open an area, pick the element and watch it done properly. There are no feeds and no shopping, just the reference. SIX AREAS • Singles: every jump with Mike Weiss, spins from basics to Level 4 features, Dartfish jump analysis with Ben Ferreira, and IJS in 30 seconds • Skating Skills: the Skating Skills tests (formerly Moves in the Field) level by level, with a demonstration of every move in the pattern • Solo Dance: solo pattern dances and dance elements, tutorials first, with the pattern diagrams alongside • Partner Dance: partner pattern dances, demonstrated, with the pattern documents for each dance • Dance Music: music for the pattern dances, track by track, ready for practice • Rules & documents: rulebooks, test sheets and pattern documents you can open at the rink Also in CORE: Club Finder, with skating clubs across the U.S. listed state by state. NEW: CORE AI Ask a question about a rule or element in plain words. CORE AI answers from the official handbooks and CORE videos, and every answer shows where it came from. Tap to open the handbook page or play the video. If the sources don't cover your question, CORE AI says so. CORE AI is a study aid; for competition decisions, check the current rulebook and your officials. NEW: SEARCH Find any element in seconds across every demonstration, tutorial and document. Searching "moves in the field" finds Skating Skills too. NEW: MAC AND APPLE TV • Mac: the whole library in a sidebar, with Search (⌘F) and Resume, plus a jump view with rotation, camera angle and playback speed controls. • Apple TV: featured demonstrations and the free sampler on the big screen, spin pages with a level control, every solo and partner dance, and CORE AI. One subscription unlocks every device. FREE SAMPLER Demonstrations from across the library, open to everyone with no subscription needed. STAY SHARP, INSIDE THE APP Tap Stay Sharp to browse the Stay Sharp range and book skate sharpening. On Apple TV, send a product to your iPhone, ready to buy. SUBSCRIPTION CORE is free to download, with the sampler open to everyone. A CORE subscription unlocks the full library and CORE AI on every device. • Monthly: $8.99 per month • Annual: $89.99 per year Prices are in U.S. dollars and may vary by country. Payment is charged to your Apple Account when you confirm the purchase. The subscription renews automatically unless you cancel at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel any time in your Apple Account settings. Privacy Policy: https://www.staysharpsports.com/policies/privacy-policy Terms of Use: https://www.staysharpsports.com/policies/terms-of-service Giving you the competitive edge, every time. ## Key features - Video demonstrations - Tutorials - Diagrams - Resource center - Skater guidance - Coach support ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Core by RTI | $89.99 | per year | | Core by RTI | $8.99 | per month | ## Is CORE by Stay Sharp safe? Not enough ratings yet to assess CORE by Stay Sharp. ## Is CORE by Stay Sharp legit? CORE by Stay Sharp appears to be a legitimate app. The AppsHunter Legitimacy Score for CORE by Stay Sharp is 90 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/core-by-stay-sharp/id6450906479/reviews.md ### 5/5 — Can’t play *2024-05-25* I have unlocked pro version, but now can’t play. ### 5/5 — Figure skating *2023-08-04* Best figure skating app on the App Store! ### 5/5 — Cornucopia!!! *2023-08-04* Finally!!! An app that is CHOCK FULL of fantastic videos, current rules & documents, On-Ice and Off…… SO Much at your fingertips. This app covers all the bases….. and then some. Thank you Rink Tank International! ### 5/5 — Best coaching assistance app *2023-08-03* I have been coaching figure skating for 20+ years and skating has changed so much throughout the years. I’ve been looking for a program to help me better my coaching skills to better my skaters. This app has everything I could possibly need to make me a better coach for my skaters. If I have a question about rule I can go to this app to check. If I need to demonstrate a jump, spin or skating skill to my skater, I can open this app and show them a video. What a great teaching tool!! I can’t wait to use this daily in my lessons. ## Frequently asked questions about CORE by Stay Sharp ### What is Core by RTI? Core by RTI is a figure skating training resource that provides video demonstrations, tutorials, and diagrams. It aims to complement professional figure skating instruction for skaters, coaches, and parents. ### What figure skating skills can I learn with Core by RTI? Core by RTI guides skaters from their first steps on the ice to advanced techniques, offering a wide range of content to support their development. ### Is Core by RTI suitable for beginners? Yes, Core by RTI is designed to guide skaters from their first steps on the ice, making it suitable for beginners as well as more advanced skaters. ### What devices does Core by RTI support? Core by RTI is available on iPhone and iPad devices. ### How often is Core by RTI updated? The latest version of Core by RTI is 14.0, and it was last updated on July 2, 2025, indicating regular updates. ### What is the age rating for Core by RTI? Core by RTI has an age rating of 4+, making it appropriate for a wide range of young users and above. ### What are the subscription options for Core by RTI? Core by RTI offers two subscription plans: $8.99 per month or $89.99 per year. ### Does Core by RTI have ads? No, Core by RTI does not contain advertisements. ## Version history (last 5 releases) ### 15.0 — 2026-11-12 Core by RTI is now CORE by Stay Sharp. Your subscription carries over. • A new home and one library organised in six areas: Singles, Skating Skills, Solo Dance, Partner Dance, Dance Music, and Rules & documents • NEW: CORE AI answers rule and element questions from the official handbooks and CORE videos, and always shows its source • NEW: Search across every demonstration, tutorial and document • NEW: CORE for Mac and Apple TV, with one subscription for every device • Club Finder and the free sampler • Stay Sharp, inside the app: shop the range and book sharpening ### 14.0 — 2025-07-02 This update introduces the all-new Club Finder: – Browse skating clubs across the United States, organized by state – Quickly search by club name or location – Instantly open club websites and social media with just a few taps – Exclusive feature for CORE subscribers ### 1.4.2 — 2025-02-05 What's New in CORE by RTI: StrengthMount™ Training is Here! We’ve added a full suite of StrengthMount™ exercises to help you build power, stability, and endurance—wherever you train. Access dedicated circuit training modules, individual exercises, and strength tutorials designed specifically for skaters, hockey players, and off-ice athletes. Train with Custom Playlists on Apple Music! Maximize your training sessions with dedicated Apple Music playlists, curated to match your workouts. Whether you're warming up, building strength, or recovering, the right soundtrack is now just a tap away! Other Enhancements & Fixes: New training categories for easy navigation Performance improvements for a smoother experience Bug fixes to keep everything running seamlessly Update now and take your training to the next level! ### 1.4.1 — 2025-01-24 We've updated the FOLIO to get you the documents for the Excel Handbook and Competitions list, as well as all the new technical notifications that are out! Even better, new content in the IJS in 30 seconds category, so go check it out! ### 1.4 — 2025-01-16 Quick fix for the folio to make sure cache clears and reloads the most relevant documents! ## Apps similar to CORE by Stay Sharp | App | Rating | Price | Category | | --- | --- | --- | --- | | [iSkateCoach](https://appshunter.io/ios/app/iskatecoach/id6503051277) | 5.0 (9) | Free | Sports | | [OOFSkate](https://appshunter.io/ios/app/oofskate/id6747049922) | 4.7 (16) | Free | Sports | | [Skater-Stats](https://appshunter.io/ios/app/skater-stats/id6751149944) | 5.0 (199) | Free | Sports | | [Inside Edge: Figure Skating](https://appshunter.io/ios/app/inside-edge-figure-skating/id6753609941) | 5.0 (5) | Free | Sports | | [Athlitix RinkUp](https://appshunter.io/ios/app/athlitix-rinkup/id6751922852) | 4.5 (6) | Free | Sports | | [IceSk8ingBeat](https://appshunter.io/ios/app/icesk8ingbeat/id6450793884) | 5.0 (1) | Free | Sports | ## More apps by Mark Fitzgerald - [Freeskate](https://appshunter.io/ios/app/freeskate/id477164819) - [Basic 1-6](https://appshunter.io/ios/app/basic-1-6/id477235445) - [Hockey 1-4](https://appshunter.io/ios/app/hockey-1-4/id477254768) - [Adult 1-6](https://appshunter.io/ios/app/adult-1-6/id477504259) - [Dance](https://appshunter.io/ios/app/dance/id477560767) - [Snowplow 1-3](https://appshunter.io/ios/app/snowplow-1-3/id478004539) All apps by Mark Fitzgerald: https://appshunter.io/developer/477164822 --- *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 2026-11-14.*