Comparison

Roller BJJ vs Boxing Chrono

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

Head to head
About

Roller BJJ

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.

About

Boxing Chrono

Features
Read full description

Boxing Chrono is a clean, distraction-free boxing timer built for rounds, rest, and real training. Set your round time, rest time, and number of rounds — then hit start. The timer guides every round so you can stay focused on your workout. Perfect for boxing, Muay Thai, MMA, HIIT, and conditioning sessions — whether you’re training at home, in the gym, or outdoors. No ads. No accounts. Works offline. One-time purchase. No subscriptions. Train with structure and stay focused. Whether you’re doing pad work, heavy bag rounds, sparring, shadowboxing, or conditioning circuits, Boxing Chrono keeps your session moving with clear round/rest timing. Designed for fighters, coaches, and anyone training with timed rounds. Built to be fast and simple: Set your round duration Set your rest duration Choose how many rounds (or keep it open‑ended) Start your workout and let the timer guide every round Great for: Boxing / Muay Thai rounds Gym workout MMA rounds and conditioning HIIT intervals, circuits, and tabata‑style workouts Home training, gym sessions, or outdoor workouts It’s a great Boxing Timer & Interval Timer! Key Features Custom rounds: round length, rest length, and total rounds Large countdown display designed for quick glances Round + rest flow made for real training sessions Bell mode option for a classic fight‑timer feel Offline by design: no internet required No ads, no tracking, no account required

Screenshots

Roller BJJ4 screens
Boxing Chrono4 screens

Verdict

The call

The clearest difference is in-app purchases: Roller BJJ at none against Boxing Chrono's 1. Roller BJJ also leads on update cadence (monthly vs every 4 months) and iOS requirement (17.0 vs 26.2). On price, 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. Boxing Chrono sells 1 one-off in-app purchase. Roller BJJ asks for nothing beyond the download.

UpkeepUpdate frequency

Roller BJJ ships an update monthly, Boxing Chrono every 4 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 5 level
Roller BJJ versus Boxing Chrono: the parameters behind the verdict, then further details
ParameterRoller BJJBoxing Chrono
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyMonthly — betterEvery 4 months
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.2
Further details — not scored
Size19 MB15 MB
Age rating4+4+
DeveloperPatrick DornanIoannis Kyritsis

In-app purchases

None

Roller BJJ

No in-app purchases

1 purchases

Boxing Chrono

One-time1
  • Unlock Boxing Chrono$0.99

Questions

Is Roller BJJ free?
Roller BJJ is free to download, with no in-app purchases.
Is Boxing Chrono free?
Boxing Chrono is free to download, with in-app purchases available.
Do Roller BJJ or Boxing Chrono have ads?
Neither Roller BJJ nor Boxing Chrono shows ads.
Which is updated more often, Roller BJJ or Boxing Chrono?
Roller BJJ ships an update monthly, and Boxing Chrono every 4 months. Most recently, Roller BJJ was updated on October 24, 2026 and Boxing Chrono on October 25, 2026.

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