Jiu vs MatTimer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jiu
This app provides a specialized scoreboard for Brazilian jiu-jitsu matches. Easily customize player names, set game durations, and manage scores with intuitive tap and hold controls. Offers two distinct scoreboard layouts to suit your preference.
- Customizable player names
- Adjustable game timer
- Add/subtract points
- Score and timer reset
- Two scoreboard layouts
- Sound settings
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A scoreboard app specialized for Brazilian jiu-jitsu. It is simple and easy to use, and you can change player names and set game times. There are two types of scoreboards available, so please use the one you prefer. ● Basic functions 1. Player name Tap “Player1 or “Player2” on the screen to enter the team name. Player names can also be hidden in the settings. 2. Adding and subtracting points You can add points by tapping the score. Press and hold a score to subtract points. 3. Timer Tap the time to start the timer. If you want to stop it, tap it again. 4. Reset Tap the cog icon to display the menu, where you can reset the score and timer. ● Other functions ・Sound settings ・Game time settings
MatTimer
This app provides a customizable timer designed for combat sports like Jiu-Jitsu and MMA. It helps athletes track training and rest periods, allowing them to focus on improving their skills. It's a simple yet essential tool for practitioners of all levels.
- Jiu-Jitsu and MMA timer
- Track roll time
- Track rest time
- Customizable settings
- Clear display
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A round timer for the mat. Set your work time, your rest time and how many rounds — then put the phone down and train. MatTimer counts the round in numbers big enough to read from across the room, and colours the whole screen so you know where you are at a glance: green for work, red for rest. A ten-second lead-in gives you time to touch hands before the first round starts. WHAT IT DOES • Work, rest and round count, all adjustable • A bell at every round change, so you never have to look • An optional ten-second warning before each round ends — set it for work, rest, or both • Save the sessions you use often and switch between them in a tap • The screen stays awake while the timer runs ON YOUR WRIST A full Apple Watch app, not a remote control. Start, pause and stop from the watch, with the same round readout and the same colours. Set your rounds there too. ON YOUR HOME SCREEN A widget shows the round you are in and the time left, without opening the app. IT KEEPS YOUR PLACE Leave the app mid-round and it picks up exactly where it should — right round, right phase, right second. While you are away, notifications tell you when each round turns over. BUILT FOR TRAINING, NOT FOR SCROLLING No account. No subscription. No ads. Nothing to read. Open it, start it, roll.
Screenshots
Verdict
The clearest difference is in-app purchases: MatTimer at none against Jiu's 2. MatTimer also leads on ads (none vs shown) and update cadence (weekly vs every 15 months). Jiu's advantage is iOS requirement (13.0 vs 26.0). On price, rating, ratings volume 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
Both are free to download. Jiu sells 2 one-off in-app purchases. MatTimer asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Jiu against 5.0 for MatTimer. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Jiu ships an update every 15 months, MatTimer weekly. The most recent releases landed on June 4, 2026 and September 6, 2026 respectively.
| Parameter | Jiu | MatTimer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 15 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 13.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 35 MB | 6 MB |
| Age rating | 12+ | 4+ |
| Developer | NAOYA ONO | Ravil Khusainov |
Customer experience
Jiu
MatTimer
In-app purchases
Jiu
- Support Developer$0.99
- Remove ads$3.99
MatTimer
No in-app purchases









