iFour Core vs Onward
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iFour Core
This app offers a personalized core workout program designed by physical therapists. It adapts to your individual anatomy and fitness level, providing daily workouts under 10 minutes with video demonstrations. Access nutrition guides and trainer support as a member.
- 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
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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/
Onward
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Onward builds your cycling training plan around your life – and adapts it when life happens. Miss a session, get sick, or add a race? The plan rebuilds itself instantly, always deterministic and transparent. TRAIN SMARTER • Adaptive training program toward your goal event – Vätternrundan, a gravel race, or your own challenge • Every session structured with power targets, ready to ride indoors or out • Export to your bike computer or train directly with intervals.icu, Wahoo and more ONWARD PLAY – INDOOR RIDING THAT FLIES BY • Ride your planned session on your smart trainer – the game follows your workout, watt by watt • Secret Stage: guess where you're riding from clues along the way • Explore: ride famous routes with pictures, facts and questions • Group rides: invite friends with a link and stay together with the rubber band • Works with Bluetooth smart trainers, power meters and heart rate straps – ERG and gradient included VIRTUAL RACING • Add weekly Zwift races or group events – they replace a hard session in your plan, never stack on top • Pick races from the Zwift event calendar, with the ones that fit today's focus marked for you • Race analysis: surges answered or missed, energy tank, sprint and how you compare to the field • A race frequency guide that tells you when your week has room for another race • A personal warm-up before every race RACE READY • Upload your race route (GPX) and get the elevation profile, decisive climbs, estimated finish time and a personal analysis of how the race will be decided • Smart taper: real distance the weekend before, short and sharp on race week • Pre-race briefing from your coach KNOW YOUR PROGRESS • Fitness, fatigue and form tracking with race-day projection • FTP estimation from your actual rides • Strength profile: see what kind of rider you are Your coach explains the plan – the numbers are always computed, never guessed. Onward Plus subscription unlocks the adaptive program, coach, virtual racing, course analysis and exports. Free trial included. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rideonward.app/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: Onward at every 3 days against iFour Core's every 2 months. iFour Core's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. iFour Core sells 2 in-app purchases, starting at $5.99 per month and Onward sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
iFour Core ships an update every 2 months, Onward every 3 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | iFour Core | Onward |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (28 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 28 — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 39 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | ifour.life, LLC | Apenticon AB |
In-app purchases
iFour Core
- Monthly7 Days trial$5.991 Month
- Annually7 Days trial$29.991 Year
Onward
- Onward Plus$4.991 Month
- Onward Plus – Yearly$49.991 Year








