BJJ Stopwatch vs SubMetrix
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BJJ Stopwatch
This specialized timer app provides clear audio cues for training Brazilian Jiu-Jitsu. It features a user-friendly interface with large displays and dark mode, along with quick actions for pausing, resetting, and adjusting rounds. Ideal for practitioners, coaches, and academies seeking structured training sessions.
- Clear audio signals for round start/end
- Configurable warning signals
- Rest period indicators
- Large, easy-to-read display
- Dark mode support
- Pause/Resume functionality
- Quick round reset
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BJJ Stopwatch is a specialized timer application designed specifically for Brazilian Jiu-Jitsu practitioners. Whether you're training for competition, drilling techniques, or enjoying an open mat session, this app has you covered. FEATURES: • Clear Audio Signals: Start/end round notifications Warning signals at configurable intervals Rest period indicators to prepare for the next round • User-Friendly Interface: Large, easy-to-read display Simple, intuitive controls Dark mode support for low-light training environments • Quick Actions: Pause/Resume functionality Quick round reset Easy timer adjustments Perfect for BJJ students, coaches, and academies looking to structure their training sessions efficiently.
SubMetrix
This app helps Jiu-Jitsu practitioners track their training sessions, analyze their performance, and improve their skills. It provides detailed insights into submissions, positions, and weaknesses, offering tools like flow maps and flashcards to enhance learning and strategy.
- Track every roll with details
- Analyze submissions and weaknesses
- Visualize game flow and build plans
- Improve knowledge with flashcards
- AI companion for technique guidance
- Performance analytics and data export
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SubMetrix is the advanced Jiu-Jitsu tracker built for serious grapplers and academies. Turn every roll into data, find your weak spots, and watch your game evolve. TRACK EVERY ROLL Log sessions in seconds — Gi or No-Gi, rounds, intensity, duration, and partners. Build a complete history of your mat time and training volume. COMBAT INTELLIGENCE Record every submission you land and every tap you give up. SubMetrix turns it into a clear picture of your game: your Lethal Weapon (your highest-percentage finish), your Critical Weakness (what keeps catching you), and your Nemesis (the positions costing you rounds). KNOW YOUR NUMBERS Clean dashboards break down your submissions, positions, takedowns, and progress over time — so you stop guessing and start training with intent. FLOW MAPS & GAMEPLANS Chain your techniques into flows and build tournament-ready gameplans. See exactly how your A-game connects from takedown to finish. MENTAL RECALL Sharpen your knowledge with BJJ flashcards and terminology quizzes spanning positions, submissions, and concepts from white belt to black. — SUBMETRIX PRO — Unlock the full arsenal: • AI Companion — your personal on-device BJJ coach. Ask how to hit or escape any technique and get step-by-step breakdowns, plus advice personalized to your own logged training. It even remembers your session notes. Works offline, right on the mats. • Performance Analytics — deep dives into your trends and tendencies. • Tournament Gameplan builder. • Training Journal & Breath Trainer. • Export your full training data anytime. Whether you're a hobbyist chasing your next stripe or a competitor prepping for the podium, SubMetrix helps you train smarter and evolve faster. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is monetization model: BJJ Stopwatch at free against SubMetrix's freemium. BJJ Stopwatch also leads on iOS requirement (16.2 vs 26.2). SubMetrix's advantage is ratings volume (6 vs 1). On price, rating, review sentiment and update cadence 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
Both are free to download. BJJ Stopwatch sells 1 one-off in-app purchase and SubMetrix sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for BJJ Stopwatch against 5.0 for SubMetrix. That said, the two scores are not equally well evidenced: SubMetrix has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
BJJ Stopwatch ships an update weekly, SubMetrix every 4 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | BJJ Stopwatch | SubMetrix |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (6 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 6 — better |
| Update frequency | Weekly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.2 — better | 26.2 |
| Further details — not scored | ||
| Size | 61 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | DIOGO AUGUSTO OLIVEIRA | Dane Chapman |
Customer experience
BJJ Stopwatch
SubMetrix
In-app purchases
BJJ Stopwatch
- BJJ Stopwatch PRO Unlock$4.99
SubMetrix
- SubMetrix Pro (Monthly)$1.991 Month









