RollJournal vs Kaizen Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Quick session logging
- AI-powered insights
- Progress tracking
- Goal setting
- Technique library
- Apple Health integration
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RollJournal helps Brazilian Jiu-Jitsu practitioners train with intention and improve faster. Log your sessions in under 60 seconds, track what's working, and build a searchable history of everything you've learned. Entirely private, stored only on your device. 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. Stay consistent - Smart reminders based on your habits, not annoying daily spam. Build the logging habit that accelerates improvement. Own your data - Everything you log stays on your device. No account, no cloud, no data collection. Export a full backup anytime. 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 - Unlimited focus areas and favorites Stats & Insights - Recent activity, streaks, training volume - Technique effectiveness and partner diversity - Full history and trends, always available 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 100% PRIVATE. ONE-TIME PURCHASE. RollJournal runs entirely on your device. No account, no login, no cloud sync, and nothing about your training ever leaves your phone. Pay once, own it forever: - No subscriptions, ever - No ads - No account required - Unlimited class logs, focus areas, and favorites - Full stats and analytics - Free lifetime updates Already used RollJournal before? Open the app and look for "Restore your data" to bring your logs over. Privacy Policy: https://makolabs-io.github.io/mako-policies/rolljournal-privacy.html Terms of Use: https://makolabs-io.github.io/mako-policies/rolljournal-eula.html
Kaizen Timer
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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
Verdict
The clearest difference is price: Kaizen Timer at Free against RollJournal's $4.99. Kaizen Timer also leads on in-app purchases (none vs 2) and update cadence (every 3 days vs every 3 weeks). RollJournal's advantage is iOS requirement (15.0 vs 17.6). On 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
Kaizen Timer is free to download; RollJournal costs $4.99 up front. RollJournal sells 2 in-app purchases, starting at $5.99 per month. Kaizen Timer asks for nothing beyond the download.
RollJournal ships an update every 3 weeks, Kaizen Timer every 3 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.
| Parameter | RollJournal | Kaizen Timer |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 62 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Mako Technology Labs | Stefan Dasic |
In-app purchases
RollJournal
- RollJournal Premium (Monthly)$5.991 Month
- RollJournal Premium (Yearly)$59.991 Year
Kaizen Timer
No in-app purchases









