Keller ATA vs Hidden Jiu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keller ATA
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Receive notifications and announcements from Keller ATA Martial Arts. Sign up for memberships, events, camps, workshops, seminars, private lessons, etc. Current students can view our class schedule, curriculum videos, and get important information right on your mobile device.
Hidden Jiu
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Inside the Hidden Jiu-Jitsu app, you can: Access all of your videos in one easy to use app Receive push notifications with the latest news and updates Access to all of your videos without having to remember your password Save your favorite posts so you can quickly find them later END USER LICENSE AGREEMENT https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Hidden Jiu at every 2 weeks against Keller ATA's every 2 months. Keller ATA's advantage is iOS requirement (10.0 vs 16.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Keller ATA ships an update every 2 months, Hidden Jiu every 2 weeks. Both last shipped on October 25, 2026.
| Parameter | Keller ATA | Hidden Jiu |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 20 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Nicosia Family Taekwondo LLC | Emily Sudduth |
In-app purchases
Keller ATA
No in-app purchases
Hidden Jiu
No in-app purchases
Questions
Is Keller ATA free?
Is Hidden Jiu free?
Do Keller ATA or Hidden Jiu have ads?
Which is updated more often, Keller ATA or Hidden Jiu?
Other comparisons
