Comparison

Knockout vs RoundBell

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Knockout

This app provides a structured and intense training experience for various interval workouts, including boxing, MMA, and HIIT. Users can easily create custom routines or use presets, with features like random cues and clear transition sounds to enhance focus and performance.

Highlights
  • Customizable flexible timers
  • Fast start presets
  • Random audio cue signals
  • Step-end transition sounds
  • Quick editing of routines
  • Focused fight screen with big timer
  • Training statistics tracking
Features
Read full description

Learn boxing step by step with guided video lessons, combo workouts, and a customizable round timer. Knockout turns solo practice into a structured training path. Learn the fundamentals, complete focused sessions, earn XP, and build your Attack, Defense, and Speed. Start with your first lesson free, then keep leveling up your fighter. GUIDED BOXING LESSONS • Follow progressive training from stance and guard to jabs, crosses, movement, defense, and combinations. • Watch clear video demonstrations before each drill. • See the active technique, round, and rest without losing focus. • Explore additional workouts and combo sessions as you progress. PROGRESS THAT KEEPS YOU TRAINING • Choose the skill you want to prioritize. • Earn XP across Attack, Defense, and Speed. • Level up your fighter by completing lessons. • Build your streak and keep moving through your training path. A POWERFUL ROUND TIMER • Create custom routines with prepare, work, rest, and repeat steps. • Set round counts and durations exactly how you train. • Add random audio cues to improve reaction and timing. • Customize step names, colors, and transition sounds. • Start fast with presets for boxing, MMA, HIIT, Tabata, and interval training. • Review completed sessions, rounds, and active training time. FOR HOME, BAG, OR GYM Use Knockout for shadowboxing, heavy bag workouts, combo drills, conditioning, sparring rounds, and coach-led sessions. Train with or without equipment and stay focused from the first bell to the last. Start your lesson. Build your skills. Own the next round. SUBSCRIPTIONS Start with a free lesson. Some lessons, workouts, combos, and features require an auto-renewing Knockout Pro subscription. Monthly and yearly plans are available. Payment is charged to your Apple Account at confirmation of purchase. Your subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription in your App Store account settings. Privacy Policy: https://boxing-timer-ee6c4.web.app/PrivacyPolicy.html Terms of Use: https://boxing-timer-ee6c4.web.app/TermsOfUse.html Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

RoundBell

This interval timer app is designed for boxing, kickboxing, and martial arts training. It offers customizable round times, audio cues, and voice alerts to keep you on track during workouts. Save your preferred settings for quick access and enjoy a clear, large display visible from a distance.

Highlights
  • Customizable round and interval times
  • Gong and horn sound alerts
  • Audio countdowns and voice notifications
  • Save and load custom presets
  • Haptic feedback for notifications
  • Screen wake lock for continuous display
Features
Read full description

RoundBell is the ultimate interval timer for boxing, kickboxing, and martial arts training. FEATURES: - Round Timer: Customize round time, interval time, and total rounds - Gong & Horn: Round start/end gong sounds and warning horn before round ends - Countdown Beeps: Audio countdown for the final 3 seconds - Voice Alerts: "1 minute remaining" and "30 seconds remaining" voice notifications - 6 Built-in Presets: Beginner 1min, Boxing 3min, Kickboxing 2min, HIIT 30s, MMA 5min, and Tabata 20/10 - Custom Presets: Save favorite settings and switch instantly - Training History: Review completed sessions, streaks, and total rounds - Apple Health: Optionally save completed workouts - Haptic Feedback: Vibration notifications when sound isn't enough - Screen Wake Lock: Screen stays on during your workout - Japanese/English support PERFECT FOR: - Boxing and kickboxing training - Pad work and heavy bag sessions - Sparring round management - HIIT and interval training Clean dark theme design with large, easy-to-read timer display - visible from across the gym.

Screenshots

Knockout4 screens
RoundBell3 screens

Verdict

The call

The clearest difference is in-app purchases: RoundBell at none against Knockout's 2. RoundBell also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (17.0 vs 26.0). On price, review sentiment, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Knockout sells 2 in-app purchases, starting at $3.99 per month. RoundBell asks for nothing beyond the download.

UpkeepUpdate frequency

Knockout ships an update every 2 weeks, RoundBell every 5 days. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

Scorecard4 real differences · 6 level
Knockout versus RoundBell: the parameters behind the verdict, then further details
ParameterKnockoutRoundBell
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings3 — better—
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size110 MB3 MB
Age rating4+4+
DeveloperSerhii KopytchukStarcrown Inc

Customer experience

Knockout

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

RoundBell

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Knockout

Subscriptions2
  • Knockout Pro Monthly$3.991 Month
  • Knockout Pro Yearly7 Days trial$14.991 Year
None

RoundBell

No in-app purchases

Questions

Is Knockout free?
Knockout is free to download, with in-app purchases available.
Is RoundBell free?
RoundBell is free to download, with no in-app purchases.
Do Knockout or RoundBell have ads?
Neither Knockout nor RoundBell shows ads.
Which is updated more often, Knockout or RoundBell?
Knockout ships an update every 2 weeks, and RoundBell every 5 days. Most recently, Knockout was updated on September 18, 2026 and RoundBell on September 20, 2026.

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