Comparison

Boxing Timer vs Roller BJJ

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

Head to head
About

Boxing Timer

This interval timer is designed for combat sports and HIIT workouts. It offers customizable round timers with authentic sound cues and visual indicators. Track your training progress with detailed statistics and view your timer on your Lock Screen or Dynamic Island.

Highlights
  • Authentic boxing round timer with bell sounds
  • Customizable workout profiles for various training styles
  • Live Activities and Dynamic Island integration
  • Detailed training statistics and progress tracking
  • Color-coded visuals for phase indication
  • Adjustable round, work, rest, and prepare times
Features
Read full description

Your corner. Your rules. Your timer. CornerSense is the boxing timer and interval timer built for fighters. Whether you're hitting the heavy bag, shadow boxing, training Muay Thai, or doing a HIIT workout — CornerSense keeps your rounds tight and your rest on point. PROFESSIONAL BOXING TIMER Authentic boxing round timer with real bell sounds and round voiceovers. Set your round duration from 30 seconds to 5 minutes, choose your rest intervals, and train like a pro. Prepare phase, work phase, rest phase — all timed to perfection with color-coded visuals so you always know where you stand. FULLY CUSTOMIZABLE PROFILES Create unlimited workout timer profiles for every style of training. Boxing fundamentals, HIIT circuits, kickboxing drills, Muay Thai rounds, conditioning work — save each setup and switch between them in a tap. Adjust rounds, work time, rest time, and prepare time with an intuitive rotating dial. LIVE ACTIVITIES & DYNAMIC ISLAND See your boxing timer right on your Lock Screen and Dynamic Island. Never miss a round change even when your phone is across the gym. Your current phase, round number, and countdown — always visible at a glance. DETAILED TRAINING STATS Track every session automatically. See daily, weekly, monthly, and yearly breakdowns of your training. Activity heatmaps, streak tracking, personal bests, peak training hours, and sparkline comparisons — all to keep you accountable and motivated. Privacy Policy: https://www.cornersense.com/privacy Terms of Use: https://www.cornersense.com/terms EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Roller BJJ

This app serves as a journal for your Brazilian Jiu-Jitsu journey, allowing you to meticulously track classes, rounds, and submissions. Gain insights into your progress, identify strengths and weaknesses, and optimize your training regimen.

Highlights
  • Track BJJ classes and learned moves
  • Monitor comfort level over time
  • Log drilling frequency
  • Record mat time and opponent belt analysis
  • Identify submission strengths and weaknesses
  • Analyze submission success rates
Features
Read full description

Roller is an app to server as a journal for your Brazilian Jujitsu journey. There are 3 main things you should track. Classes, Rounds, and Submissions! Tracking them right after class is the best way to get accurate data. Use Classes to keep track of the moves you learned, track your comfort over time, and keep track of how many times you've drilled. Use Rounds to keep track of mat time, know that you're going to do differently against different belts. View rounds over time and see the difference between day one and today. Use Submissions to find your strengths and your weaknesses, find which submission you're caught in the most and which you land the most.

Screenshots

Boxing Timer4 screens
Roller BJJ4 screens

Verdict

The call

The clearest difference is in-app purchases: Roller BJJ at none against Boxing Timer's 3. Boxing Timer's advantage is update cadence (every 2 days vs monthly) and iOS requirement (15.1 vs 17.0). On price, rating, ratings volume and ads 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. Boxing Timer sells 3 in-app purchases, starting at $3.99 per month. Roller BJJ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Boxing Timer against 5.0 for Roller BJJ. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Boxing Timer ships an update every 2 days, Roller BJJ monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 5 level
Boxing Timer versus Roller BJJ: the parameters behind the verdict, then further details
ParameterBoxing TimerRoller BJJ
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 2 days — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size54 MB19 MB
Age rating4+4+
DeveloperAlizandro LopezPatrick Dornan

In-app purchases

3 purchases

Boxing Timer

Subscriptions2
  • CornerSense Pro Monthly$3.991 Month
  • CornerSense Pro Yearly$19.991 Year
One-time1
  • CornerSense Pro Lifetime$49.99
None

Roller BJJ

No in-app purchases

Questions

Is Boxing Timer free?
Boxing Timer is free to download, with in-app purchases available.
Is Roller BJJ free?
Roller BJJ is free to download, with no in-app purchases.
Which has better reviews, Boxing Timer or Roller BJJ?
Boxing Timer and Roller BJJ are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Boxing Timer or Roller BJJ have ads?
Neither Boxing Timer nor Roller BJJ shows ads.
Which is updated more often, Boxing Timer or Roller BJJ?
Boxing Timer ships an update every 2 days, and Roller BJJ monthly. Most recently, Boxing Timer was updated on October 30, 2026 and Roller BJJ on October 31, 2026.

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