# Kimura vs Roll Time

The clearest difference is review sentiment: Roll Time at 100% against Kimura's 62%. Roll Time also leads on rating (5.0 vs 4.5) and monetization model (free vs free with in-app purchases). Kimura's advantage is iOS requirement (15.6 vs 18.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Kimura sells 3 in-app purchases, starting at $9.99 per month and Roll Time sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Roll Time holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 23 and 25 respectively. Written reviews point the same way: 62% of Kimura's written reviews are positive against 100% of Roll Time's.

Kimura ships an update fortnightly, Roll Time weekly. Both last shipped on September 21, 2026.

## The numbers

| Metric | Kimura | Roll Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (23 ratings)](https://appshunter.io/ios/app/kimura-bjj-notes-and-sessions/id6736634052/reviews) | **[5.0 (25 ratings)](https://appshunter.io/ios/app/roll-time-bjj-round-timer/id6751762523/reviews)** |
| Number of ratings | 23 | **25** |
| Positive reviews | 61.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 82 MB | 18 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Aurelius Applications Inc.](https://appshunter.io/developer/1769512376) | [Alexander Tsapaev](https://appshunter.io/developer/1033012480) |

## What reviewers say

### Kimura

[App page](https://appshunter.io/ios/app/kimura-bjj-notes-and-sessions/id6736634052)

Log your Brazilian Jiu Jitsu techniques and training sessions. Organize your moves, connect them into flows, and visualize your game. Access lessons on stoicism and warrior spirit, and save techniques for later practice.

**Highlights:** Track Jiu Jitsu techniques, Record BJJ sessions, Access 100+ lessons, Save techniques for later, Link techniques into flows, Visualize your game, Add technique videos

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Annual | $69.99 | per year |
| Lifetime | $69.99 | one-time |


### Roll Time

[App page](https://appshunter.io/ios/app/roll-time-bjj-round-timer/id6751762523)

This app is a professional round timer designed for coaches in combat sports like BJJ, MMA, and boxing. It features a large, high-contrast display, customizable sound alerts, and the ability to mirror the timer to a TV for a wall-timer experience. Coaches can save unlimited presets for different training formats and even display their gym's logo.

**Highlights:** Customizable work, warning, and rest intervals, Optional prepare and cooldown phases, Unlimited saved presets for classes and drills, Loud sound and voice alerts, Smart Volume for music adjustment, High-contrast, large timer display, TV mirroring for wall-timer setup, Gym logo display

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Edition | $9.99 | one-time |


## Frequently asked questions

### Is Kimura free?

Kimura is free to download, with in-app purchases available.

### Is Roll Time free?

Roll Time is free to download, with in-app purchases available.

### Which has better reviews, Kimura or Roll Time?

Roll Time is rated higher. Kimura averages 4.5 out of 5 from 23 ratings, while Roll Time averages 5.0 from 25 ratings.

### Do Kimura or Roll Time have ads?

Neither Kimura nor Roll Time shows ads.

### Which is updated more often, Kimura or Roll Time?

Kimura ships an update fortnightly, and Roll Time weekly. Most recently, Kimura was updated on September 21, 2026 and Roll Time on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*