Strength Academy vs KO Interval Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Strength Academy
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The training app built by weightlifting coaches, for athletes who take their lifting seriously and the coaches who guide them. Strength Academy 2.0 brings a completely new design to every screen. Your coach's plan, your sets, your progress, your nutrition and your recovery, all in one place. FOR ATHLETES • Open the app to today's session, your week and your coach • Log every set, rep and load in seconds, with RPE, RIR and how each set felt • Auto-detect personal records and see your best lifts by rep range, with ranks that climb as you get stronger • Get a plain-English read of your week: sessions, PRs, tonnage, recovery and motivation • Log food by photo, voice, barcode or search, plan your meals and build a grocery list • Find your range with guided mobility assessments, full-body or focused • Mark where it hurts and add movement routines to your workouts • Share lifts in the Arena, earn ranks and challenge friends • Stay in touch with your coach through messaging, voice notes and video feedback FOR COACHES • Start each day on your overview: weekly reports, client updates and your calendar • See who needs you today: missed programs, new PRs and unread messages, sorted for you • Build multi-week programs in minutes with a drag-and-drop builder • Use percentage-based loads that adjust when maxes change • Prescribe RPE, RIR, complexes, circuits and reusable templates • Manage 1-on-1 and team athletes from a single dashboard • Monitor PRs, readiness, mobility scores and pain reports • Preview exactly what your athletes see in their app • Give video feedback on their lifts • Run the full coach workspace on your computer, and coach from your phone on the go • Publish and sell your training programs to athletes worldwide BUILT FOR YOUR SPORT Olympic weightlifting (snatch, clean & jerk, Sinclair) • Powerlifting (squat, bench, deadlift, DOTS) • CrossFit • Hyrox • Hypertrophy • Running • Triathlon WHY STRENGTH ACADEMY Generic fitness apps weren't built for the barbell. Strength Academy was created inside real training cycles by coaches and a physiotherapist studying sport performance at the University of Lausanne, bridging performance and injury prevention with a science-based approach. Free to download. Start training with a system today. Questions or feedback? Reach us at support@strengthacademy.app
KO Interval Timer
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YOUR ROUNDS. YOUR PACE. KO Interval Timer is a flexible interval timer for boxing, HIIT, circuit training, stretching and anything else that works in rounds. Create your timer, choose your cues and keep a record of every session—all in one app. BUILD A TIMER THAT FITS Set your work and rest periods, choose the number of rounds and add a preparation countdown. Give your phases custom names, save your favourite timers and duplicate them when you want to try something different. STAY FOCUSED WITH SOUND AND VOICE Choose from a range of timer sounds, spoken countdowns and coaching voices. Personalise your start, phase-change and completion cues, with optional haptic and visual alerts to help you follow each session. KEEP A WORKOUT JOURNAL Go beyond a finish time. Add notes, a photo and tags to your completed workouts. Record how you felt before and after, rate the difficulty and optionally log your bodyweight. LOOK BACK AT YOUR PROGRESS Review your workout history, completed rounds and elapsed time. Follow your training streaks and activity over time, and revisit your journal to see what worked for you. QUICK ACCESS WITH WIDGETS AND SIRI Access saved timers through home-screen widgets and use Siri shortcuts to start a session. See useful training summaries without opening your workout history. MAKE IT YOURS Choose your accent colour, preferred sounds and coaching voice. Enable the keep-screen-awake setting to keep your timer visible during a session. YOUR JOURNAL STAYS ON YOUR DEVICE Your workout history, notes and photos are stored locally—not uploaded to our servers. No KO Interval Timer account signup is required. The app does not provide cloud backup or cross-device workout syncing. IMPORTANT TO KNOW KO Interval Timer is designed for foreground use. Keep the app open and your screen awake during sessions; it does not provide background or lock-screen timer alerts. An internet connection is needed to verify subscription access. SUBSCRIPTION REQUIRED An active subscription is required to use the timer and other protected features. Available plans, prices and billing periods are displayed before purchase. Payment is charged to your Apple account when you confirm a purchase. Subscriptions renew automatically unless cancelled before renewal under Apple’s applicable terms. You can manage or cancel your subscription in your Apple account settings. Deleting the app does not cancel your subscription. Privacy Policy: https://koappstudio.com/embed/ko-interval-timer/privacy-policy Terms of Use: https://koappstudio.com/embed/ko-interval-timer/terms-of-use
Screenshots
Verdict
The clearest difference is in-app purchases: Strength Academy at none against KO Interval Timer's 2. Strength Academy also leads on device support (4 vs 1). On price, ads and iOS requirement 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. KO Interval Timer sells 2 in-app purchases, starting at $3.99 per month. Strength Academy asks for nothing beyond the download.
| Parameter | Strength Academy | KO Interval Timer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.5 — better | 16.4 |
| Further details — not scored | ||
| Size | 133 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | StrengthAcademy Sarl | VAVIVA |
In-app purchases
Strength Academy
No in-app purchases
KO Interval Timer
- English$3.991 Month
- English$29.991 Year









