Chin Na In Depth vs SimpleTimerOk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chin Na In Depth
Learn Chin Na, a Chinese grappling art focused on seizing control through finger, hand, and joint-locking techniques. This app offers detailed video lessons by Dr. Yang, covering various courses from basic to advanced defensive strategies.
- Stream or download video lessons
- Learn 34+ finger, hand, and joint-locking techniques
- Detailed instruction by Dr. Yang
- Courses on basic to advanced Chin Na
- Includes leg wrestling and counter-attacks
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$19.99 IAP for each Chin Na lesson / Three complete courses. • Stream or download Chin Na video lessons by Dr. Yang. • Chin Na means “Seize Control” and is the origin of grappling arts. Chin Na grappling is a way to temporarily control an opponent so you may end a fight, defend yourself, or win in a sparring situation. Courses 1 – 4 include 34 finger, hand, and joint-locking techniques taught with attention to detail by Dr. Yang, Jwing-Ming. Courses 5 – 8 include detailed lessons for controlling and incapacitating your opponent with 30 finger, hand, and joint-locking techniques. Courses 9 – 12 go even deeper with 43 finger, hand, and joint-locking Chin Na techniques, including Leg Wrestling and Chin Na for defense and counter-attacking against a Chin Na hold. Each course also available on DVD (reg $59.95). 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
Screenshots
Verdict
The clearest difference is in-app purchases: SimpleTimerOk at none against Chin Na In Depth's 3. SimpleTimerOk also leads on update cadence (every 3 weeks vs every 34 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. Chin Na In Depth sells 3 one-off in-app purchases. SimpleTimerOk asks for nothing beyond the download.
Chin Na In Depth ships an update every 34 months, SimpleTimerOk every 3 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.
| Parameter | Chin Na In Depth | SimpleTimerOk |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 34 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 | 36 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | YMAA Publication Center, Inc. | Sergei Klishin |
In-app purchases
Chin Na In Depth
- Unlock Section 1$19.99
- Unlock Section 2$19.99
- Unlock Section 3$19.99
SimpleTimerOk
No in-app purchases
Questions
Is Chin Na In Depth free?
Is SimpleTimerOk free?
Do Chin Na In Depth or SimpleTimerOk have ads?
Which is updated more often, Chin Na In Depth or SimpleTimerOk?
Other comparisons
