Joint Locks by Rory Miller vs SimpleTimerOk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Joint Locks by Rory Miller
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.
- Principles-based joint lock training
- Improvisation under pressure
- Video chapters covering various joint types
- Lock flow drills
- Escaping joint locks
- Suitable for beginners
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Learn to Improvise Joint Locks Under Pressure with Rory Miller. Same videos as the Joint Locks DVD for much less! Video Chapters: • Intro • Principles • Hinge Joints • Ball and Socket Joints • Gliding Joints • Fingers • Principles Review • Lock Flow Drill • Escaping Locks • Conclusion In this 60-minute video app, Rory Miller makes the case that the problem is not with the locks themselves, but with our teaching methods. A principles-based approach allows relative beginners to improvise joint locks with one hour of training, something that many traditional approaches have failed to do with hundreds of hours. This app is available for free download with sample videos, and offers a single in-app purchase to access these joint lock lessons for the lowest possible cost. Joint locks are widely regarded as one of the most versatile physical tools-- they can move, immobilize, submit or severely injure a threat. They are also justifiably regarded as one of the more difficult of martial arts skills to implement in real life. Joint locks are NOT primary self-defense techniques. If you are in a position that requires self-defense you are justified in and likely need a higher level of force. However, if your job requires controlling violent people with minimal injury you must be good at joint locks and you must be able to improvise them under pressure. Rory Miller is a writer and teacher living peacefully in the Pacific Northwest, USA. He has served for seventeen years in corrections as an officer and sergeant working maximum security, booking and mental health; leading a tactical team; and teaching subjects ranging from Defensive Tactics and Use of Force to First Aid and Crisis Communications with the Mentally Ill. For fourteen months he was an advisor to the Iraqi Corrections System. He received a BS degree in Psychology; served in the National Guard as a Combat Medic (91A/B); earned college varsities in judo and fencing, and received a mokuroku in jujutsu. Mr. Miller is the author of several award-winning books and DVDs, including “Meditations on Violence”, “Facing Violence”, “Scaling Force”, and “Conflict Communications”. As an experienced martial artist and veteran correction officer, Rory Miller distills what he learned from jailhouse brawls, tactical operations, and ambushes to explore the differences between martial arts and the subject martial arts were designed to deal with: Violence. In his work, Miller introduces the myths, metaphors and expectations that most martial artists have about what they will ultimately learn in their dojo. This is then compared with the complexity of the reality of violence. Thank you for downloading our app! We are striving to make the best possible video apps available. Sincerely, The team at YMAA Publication Center, Inc. (Yang’s Martial Arts Association) CONTACT: apps@ymaa.com VISIT: www.YMAA.com WATCH: www.YouTube.com/ymaa
SimpleTimerOk
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SimpleTimerOk is a straightforward and easy-to-use mobile application designed to help individuals with their workout training sessions. With this app, users can set an interval timer according to their specific training needs. SimpleTimerOk provides users with a clear and concise interface that allows them to easily set and adjust their timers. Whether you're doing cardio, weight lifting, or any other type of workout, SimpleTimerOk can help you keep track of your intervals, making it easier to achieve your fitness goals
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Verdict
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.
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. 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.
| Parameter | Joint Locks by Rory Miller | SimpleTimerOk |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 38 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | YMAA Publication Center, Inc. | Sergei Klishin |
In-app purchases
Joint Locks by Rory Miller
- Unlock everything$9.99
SimpleTimerOk
No in-app purchases
Questions
Is Joint Locks by Rory Miller free?
Is SimpleTimerOk free?
Do Joint Locks by Rory Miller or SimpleTimerOk have ads?
Which is updated more often, Joint Locks by Rory Miller or SimpleTimerOk?
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