# iFour Core — Custom Core and Ab Workouts > Customizable, physical therapy-approved core workouts with daily adaptations. (iPhone/iPad app by ifour.life, LLC.) - Source: https://appshunter.io/ios/app/ifour-core/id1525317554 (this page in markdown: same URL + `.md`) - Developer: [ifour.life, LLC](https://appshunter.io/developer/1525317556) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Rating: 5.00/5 from 28 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 39 MB - Languages: English - Released: 2021-04-10 - Data updated: 2026-06-04 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/ifour-core/id1525317554/reviews.md ## What is iFour Core? Every individual’s anatomy is different which is why we have designed a customizable, physical therapy approved core program. The iFour Core app addresses specific areas of your core to help you develop the strongest core imaginable without injury. Each workout is under 10 minutes, is suitable for all fitness levels, and can take place in the home or at the gym. As a member of the iFour Core app, you will receive new workouts every day, nutrition guides, and support. FREE 7-day trial for new members! HOW IT WORKS: After completing the iFour Core fitness test, you will get a core strength rating. This rating is broken up based on muscle fibers worked (intrinsic, rectus, obliques & transverse). The iFour Core app customizes the exercises each day based on your fitness test performance and current level of core strength. WHAT MAKES US DIFFERENT: Life is full of surprises, plateaus, and challenges. We created this app with this in mind allowing you to recalibrate your individualized workout formula at any point you feel necessary. Unlike other programs, this is not simply just hitting “reset,” and repeating the same exercises from previous days. This is a full recalculated algorithm taking you from your new “starting point” with a proven plan of attack to help you once again improve. iFour Core Features: Workout & Fitness Planning • Functional yet challenging core rotations, ranging from 5-10 Minutes! • Includes regressions to decrease difficulty and progressions to advance the exercises as you improve. • 323 unique core exercises. • 137 additional core exercises with 6 different pieces of equipment to choose from. • Video demonstrations of all 323 core exercises. • Designed for all levels, whether you are coming out of physical therapy or an elite athlete! • Take the fitness test and as you get stronger, unlock more core exercises prescribed for you. Tracking & Fitness Motivation • Workout along with J, a seasoned trainer for celebrities, professional athletes, and others. • Track your daily progress in both your Fitness Test and Workout History. • Share your results on your favorite social media platform. • Keep up to date and learn with the latest iFour videos. Subscription Pricing & Terms iFourCore is free to download. Ongoing use requires an active subscription, available on a monthly or annual basis. New customers are eligible for a 7-day free trial. Annual subscriptions are billed the total fee from the purchase date. Monthly subscriptions are billed per month. Payment will be charged to your credit card through your iTunes account at confirmation of purchase. Subscription renews automatically unless cancelled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing. Subscriptions can be managed and auto-renewal turned off in Account Settings in iTunes after purchase. Once purchased, refunds will not be provided for any unused portion of the term. Read our full Terms and Conditions & Privacy Policy: https://www.ifourlife.com/ ## Key features - Personalized core workout program - Physical therapy approved exercises - Daily workouts under 10 minutes - Video demonstrations of exercises - Nutrition guides and support - Fitness test for customized plans ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly | $5.99 | per month | | Annually | $29.99 | per year | ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/ifour-core/id1525317554/reviews.md ### 5/5 — The Best *2022-12-06* Best in the business for sure!! ### 5/5 — Zak *2021-12-24* Awesome! ### 5/5 — Love it *2021-11-10* This app is fantastic. Fully adjustable and very efficient works out with great results. ### 5/5 — Truly The BEST Fitness App You Can Use! *2021-09-04* I’ve true years I’ve tried so many different apps out there to help custom workout plans, but nothing compares to iFour Core App! From the in app test, to the daily core additions to my workouts under 10 minutes long, this app truly is amazing! I highly recommend!!!! ### 5/5 — Amazing *2021-05-22* I love this app for when I don’t want to think and when I want to change it up. Which is all the time! Just open it up and there are tons of great options just for me! Easy to follow, creative, targeted ! let’s me focus on the movement instead of what should I do next or the same movements over and over! ### 5/5 — Mrz.Ratchford *2021-05-05* I really enjoy my customized workout tailored just for me! It’s easy to follow with great instructions!! Thanks ### 5/5 — Momalitta *2021-04-21* My arms and legs are pretty strong but my core is not and I feel it getting stronger even after a few days. Great program! ### 5/5 — Stronger core in just minutes a day! *2021-04-19* The app is simple to use and easy to understand. After you take the fitness test to determine your level of core strength/fitness, the app determines the difficulty level of your workout that suits you best. I can get my daily ab workout in on a quick break at work. ### 5/5 — Great Program! *2021-04-13* I’ve been lifting weights for years, but have tended to neglect my core because I could never find any good routine or set of exercises that I liked. Well, this app has changed all that in a short amount of time. I love the variety of exercises, and great guidance on how to get the most out of each. Really outstanding program! ### 5/5 — This app will truly enhance your fitness life! *2021-04-11* A lot of apps claim to be customizable, but iFour is truly designed with real people in mind. I took the fitness test, and based on my results it set me up with a ton of workouts. Not only can I use this on the go, it requires little to no equipment at all. So if you’re someone like me who’s schedule can get heavy during the week, this app is a game changer! ## Frequently asked questions about iFour Core ### What is iFour Core? iFour Core is a health and fitness application that provides a customizable core workout program. It is designed with physical therapy approval to help users build core strength without injury, adapting to individual anatomy and fitness levels. ### How does iFour Core personalize workouts? After a fitness test, iFour Core rates your core strength based on muscle fibers worked. It then customizes daily exercises based on your test performance and current strength level, recalculating your plan as you progress. ### What kind of workouts does iFour Core offer? iFour Core offers functional yet challenging core rotations ranging from 5-10 minutes. It includes regressions to decrease difficulty and progressions to advance exercises as you improve, with 323 unique core exercises available. ### Does iFour Core have ads? No, iFour Core does not contain advertisements. The app is free to download and offers ongoing use through a subscription model. ### What are the subscription options for iFour Core? iFour Core offers monthly subscriptions at $5.99/month and annual subscriptions at $29.99/year. Both plans include a 7-day free trial for new customers. ### Can I cancel my iFour Core subscription? Yes, you can manage your subscription and turn off auto-renewal in your iTunes Account Settings at least 24 hours before the end of the current subscription period. Refunds are not provided for any unused portion of a term. ### What devices is iFour Core compatible with? iFour Core is available for iPhone and iPod devices. It is rated for ages 4 and up. ### How often is iFour Core updated? The latest version of iFour Core is 1.8, and it was last updated on January 5, 2024. This indicates regular updates to the application. ## Version history (last 5 releases) ### 1.8 — 2024-01-05 - Fix minor bugs ### 1.7 — 2023-11-15 Fix minor bugs. ### 1.6 — 2023-11-14 - Update new UI - Fix minor bugs ### 1.4 — 2022-04-11 - Enhanced the UI/UX for the Subscription screen. - Added a new feature: Remove account. ### 1.3 — 2021-07-19 - Add the help link at the Sign In screen. - Correct the help link on the Connect screen. - Fix the case-sensitive issue on the Sign-Up screen. ## Apps similar to iFour Core | App | Rating | Price | Category | | --- | --- | --- | --- | | [Abs Smash - Daily Core Workout](https://appshunter.io/ios/app/abs-smash-daily-core-workout/id1456450614) | 4.8 (362) | Free | Health & Fitness | | [Daily Ab Workout - Abs Trainer](https://appshunter.io/ios/app/daily-ab-workout-abs-trainer/id388882339) | 4.7 (8,975) | Free | Health & Fitness | | [Daily Ab Workout](https://appshunter.io/ios/app/daily-ab-workout/id395816966) | 4.8 (1,253) | $9.99 | Health & Fitness | | [Motivation Beast](https://appshunter.io/ios/app/motivation-beast/id6657948244) | 5.0 (2) | Free | Health & Fitness | | [Onyx Physical Therapy](https://appshunter.io/ios/app/onyx-physical-therapy/id1663521482) | — | Free | Health & Fitness | | [Erica Ziel – Core Athletica®](https://appshunter.io/ios/app/erica-ziel-core-athletica/id1507461930) | 5.0 (10) | Free | Health & Fitness | ## Related topics [ifour core](https://appshunter.io/ios/topics/ifour-core) · [ifour lite](https://appshunter.io/ios/topics/ifour-lite) --- *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 2026-06-04.*