# Joint Locks by Rory Miller vs SimpleTimerOk

The clearest difference is in-app purchases: SimpleTimerOk at none against Joint Locks by Rory Miller's 1. SimpleTimerOk also leads on update cadence (every 3 weeks vs every 38 months) and iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Joint Locks by Rory Miller sells 1 one-off in-app purchase. SimpleTimerOk asks for nothing beyond the download.

Joint Locks by Rory Miller ships an update every 38 months, SimpleTimerOk every 3 weeks. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Joint Locks by Rory Miller | SimpleTimerOk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/joint-locks-by-rory-miller/id927960246/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 30 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YMAA Publication Center, Inc.](https://appshunter.io/developer/891633332) | [Sergei Klishin](https://appshunter.io/developer/1618413234) |

## What reviewers say

### Joint Locks by Rory Miller

[App page](https://appshunter.io/ios/app/joint-locks-by-rory-miller/id927960246)

Learn to improvise joint locks under pressure with this video app. It offers a principles-based approach to mastering physical control techniques, suitable for beginners. Access sample videos for free and unlock comprehensive lessons with a single in-app purchase.

**Highlights:** Principles-based joint lock training, Improvisation under pressure, Video chapters covering various joint types, Lock flow drills, Escaping joint locks, Suitable for beginners

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock everything | $9.99 | one-time |


### SimpleTimerOk

[App page](https://appshunter.io/ios/app/simpletimerok/id6445863709)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Joint Locks by Rory Miller free?

Joint Locks by Rory Miller is free to download, with in-app purchases available.

### Is SimpleTimerOk free?

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

### Do Joint Locks by Rory Miller or SimpleTimerOk have ads?

Neither Joint Locks by Rory Miller nor SimpleTimerOk shows ads.

### Which is updated more often, Joint Locks by Rory Miller or SimpleTimerOk?

Joint Locks by Rory Miller ships an update every 38 months, and SimpleTimerOk every 3 weeks. Most recently, Joint Locks by Rory Miller was updated on October 16, 2026 and SimpleTimerOk on October 6, 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.*