# Jiu vs Strike Timer Interval Training

The clearest difference is in-app purchases: Jiu at none against Strike Timer Interval Training's 1. Jiu also leads on update cadence (every 8 days vs every 3 weeks). Strike Timer Interval Training's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.2). On price and ads there is nothing between them.

Both are free to download. Strike Timer Interval Training sells 1 in-app purchase, starting at $14.99 per year. Jiu asks for nothing beyond the download.

Jiu ships an update every 8 days, Strike Timer Interval Training every 3 weeks. The most recent releases landed on June 20, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Jiu | Strike Timer Interval Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/jiu-jitsu-logs-bjj-tracker/id6740939279/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 4 MB | 47 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Mario Jackson](https://appshunter.io/developer/1792323899) | [Shannon Kempenich](https://appshunter.io/developer/579568236) |

## What reviewers say

### Jiu

[App page](https://appshunter.io/ios/app/jiu-jitsu-logs-bjj-tracker/id6740939279)

This app helps martial arts practitioners track their training sessions, analyze performance against partners and positions, and visualize progress. It features a goal system to encourage consistent practice and improve technique awareness.

**Highlights:** Smart training notes, Partner analytics, Position insights, Visual dashboard, Goal system, Track rolls and stats

**In-app purchases:** none


### Strike Timer Interval Training

[App page](https://appshunter.io/ios/app/strike-timer-interval-training/id6761288575)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Strike Timer Pro | $14.99 | per year |


## Frequently asked questions

### Is Jiu free?

Jiu is free to download, with no in-app purchases.

### Is Strike Timer Interval Training free?

Strike Timer Interval Training is free to download, with in-app purchases available.

### Do Jiu or Strike Timer Interval Training have ads?

Neither Jiu nor Strike Timer Interval Training shows ads.

### Which is updated more often, Jiu or Strike Timer Interval Training?

Jiu ships an update every 8 days, and Strike Timer Interval Training every 3 weeks. Most recently, Jiu was updated on June 20, 2026 and Strike Timer Interval Training on September 11, 2026.

---

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