Comparison

RollJournal vs Kaizen Timer

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

Head to head
About

RollJournal

Log BJJ training sessions quickly, track progress, and gain AI-powered insights to improve your game. This app helps practitioners of all levels remember techniques, see growth, and train more effectively.

Highlights
  • Quick session logging
  • AI-powered insights
  • Progress tracking
  • Goal setting
  • Technique library
  • Apple Health integration
Read full description

RollJournal helps Brazilian Jiu-Jitsu practitioners train with intention and improve faster. Log your sessions in under 60 seconds, track what's working, and get AI-powered insights tailored to YOUR game. Whether you're a white belt building fundamentals or a black belt sharpening details: never forget what you learned, see your progress grow, and train smarter. WHO IS THIS FOR? Whether you're: - A competitor tracking camp progress before tournaments - A hobbyist wanting to remember what you learned - An instructor organizing curriculum and student engagement - A returning athlete rebuilding after time off - A beginner building your fundamentals systematically RollJournal adapts to YOUR journey. WHY ATHLETES USE ROLLJOURNAL Never forget what you learned - Capture techniques, rolls, partners, and key details in seconds. Your training history, searchable and organized. See your progress clearly - Track streaks, volume, technique effectiveness, and training patterns at a glance. Progress that's invisible becomes visible. Train with focus - Set goals (e.g., "Half-Guard Sweeps"), track attempts vs successes, and build your game systematically. Get AI-powered insights - Personalized coaching based on YOUR training patterns. Identify what's working, spot weaknesses, and get focused recommendations. Stay consistent - Smart reminders based on your habits—not annoying daily spam. Build the logging habit that accelerates improvement. CORE FEATURES Quick Logging - Date, gi/no-gi, techniques, rolls, partners, notes, rating - Log a session in under 60 seconds - Auto-save as you work Focus Areas & Favorites - Set training goals and track attempts → successes - Save your go-to techniques with notes and video links - Organize by category (guard, passes, submissions, etc.) - Pre-loaded technique library included AI Coach - 5 free coaching sessions (unlimited for Premium) - Personalized suggestions based on YOUR data - Identify patterns and weaknesses automatically Smart Stats & Insights - Recent activity, streaks, training volume - Technique effectiveness and partner diversity - Community comparisons (optional, anonymous) - Advanced analytics for Premium users Persona-Based Onboarding - Tailored setup for competitors, hobbyists, returning athletes, beginners - Explore with sample data before logging your first session Apple Health Integration (Optional) - Sync BJJ workouts to Apple Health (martial arts activity type) - Track active calories burned - No health data is read or collected from your device FREE VS PREMIUM Free Plan - Start Training Smarter Today - Unlimited class logs - 2 active focus areas - 5 favorites - 7 lifetime AI coaching sessions (total) - Essential stats & recent activity - Persona-based onboarding - Apple Health sync RollJournal Premium - Unlock Your Full Potential - Everything in Free, plus: - UNLIMITED active focus areas - UNLIMITED favorites with categories - UNLIMITED AI coaching (20 requests/day) - Advanced statistics (3M, 6M, 1Y, All time) - Deep analytics: technique trends, partner stats, training insights - Smart training notifications with full customization - Priority support SUBSCRIPTIONS & TERMS RollJournal Premium is an auto-renewing subscription: - Monthly: $5.99/month - Yearly: $59.99/year Subscriptions renew unless canceled at least 24 hours before the end of the period. Payment is charged to your Apple ID at confirmation. Manage or cancel in App Store account settings. Privacy Policy: https://www.rolljournal.com/privacypolicy Terms of Use: https://www.rolljournal.com/terms

About

Kaizen Timer

Features
Read full description

Kaizen Timer is a customizable interval timer for boxing, HIIT, Tabata, treadmill workouts, strength training, and more. Build simple work–rest intervals or create advanced multi-phase workouts that match exactly how you train. Start quickly with ready-made presets, or customize every phase, round, work period, and rest period. FEATURES • Presets for popular training styles • Fully customizable work and rest intervals • Advanced phase sequencing for complex workouts • Clear visual and audio timers • Accurate round and phase tracking • Reliable timing when backgrounded or locked • Home Screen widgets for quick access • Light and dark mode support • Optional Apple Health integration for workouts and calorie estimation • Export completed workouts • Available in multiple languages, including: English, French, German, Italian, Russian, Spanish, Japanese, Chinese BUILT FOR CONSISTENCY Set your training intensity and let Kaizen Timer handle the structure. Timers stay accurate even during interruptions, helping you stay focused through every round. FREE TO USE All Kaizen Timer features are available for free. An optional support subscription helps fund ongoing development, but subscribing is never required to access features or content. Train smarter. Stay focused. Improve every round. Terms of Use: https://kaizentimerapp.com/terms.html Privacy Policy: https://kaizentimerapp.com/privacy.html

Screenshots

RollJournal4 screens
Kaizen Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Kaizen Timer at none against RollJournal's 2. Kaizen Timer also leads on update cadence (every 3 days vs every 3 weeks). RollJournal's advantage is iOS requirement (14.0 vs 17.6). 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. RollJournal sells 2 in-app purchases, starting at $5.99 per month. Kaizen Timer asks for nothing beyond the download.

UpkeepUpdate frequency

RollJournal ships an update every 3 weeks, Kaizen Timer every 3 days. The most recent releases landed on September 9, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 7 level
RollJournal versus Kaizen Timer: the parameters behind the verdict, then further details
ParameterRollJournalKaizen Timer
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.6
Further details — not scored
Size69 MB3 MB
Age rating4+4+
DeveloperMako Technology LabsStefan Dasic

In-app purchases

2 purchases

RollJournal

Subscriptions2
  • RollJournal Premium (Monthly)$5.991 Month
  • RollJournal Premium (Yearly)$59.991 Year
None

Kaizen Timer

No in-app purchases

Questions

Is RollJournal free?
RollJournal is free to download, with in-app purchases available.
Is Kaizen Timer free?
Kaizen Timer is free to download, with no in-app purchases.
Do RollJournal or Kaizen Timer have ads?
Neither RollJournal nor Kaizen Timer shows ads.
Which is updated more often, RollJournal or Kaizen Timer?
RollJournal ships an update every 3 weeks, and Kaizen Timer every 3 days. Most recently, RollJournal was updated on September 9, 2026 and Kaizen Timer on September 14, 2026.

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