Recommended judo apps: choose a tool for the job you need

Which app fits the task you need?

A source-based comparison by Judo AI, this site's operator—not an independent hands-on test. Read the details and limitations below.

How were these apps selected?

We selected four different jobs a judoka might need help with, then checked the providers’ public descriptions on 12 September 2026. Judokai and JudoTV were checked in the US App Store; Athlete Analyzer through its product and help pages; Judo AI through its public website and Web-owned feature copy. We did not install every app, measure analysis accuracy or compare subscription transactions. This is a source-based selection guide, not a hands-on test.

The site is operated by Judo AI. We explain where our own product may fit and where another kind of tool is more relevant. There is no numbered winner, fabricated score or federation endorsement. Store features, availability and purchase terms can change; check the listing for your country and device before deciding.

Start with the question left after practice

Suppose you finish randori thinking, “I could not enter my throw.” A demonstration library may help you revisit the movement, but it cannot establish why your particular attack failed. A clip may show an obstructed grip or a late entry, but a cropped view may leave that uncertain. Your coach’s observation, your account and an AI suggestion are different kinds of information. First decide what you need to recover or understand.

If you forget corrections, prioritize a usable record. If you cannot remember a technique’s name or sequence, look for a reference. If you want to see how elite judoka create opportunities, look for contest footage. If your coach wants to compare tagged exchanges across matches, look for an analysis workflow you can share. One product need not do every job.

Judo AI: Training Coach — reflection connected to a plan

Our public product page describes practice logs, video feedback, AI questions and planning in an iPhone app. We recommend considering Judo AI when these pieces are scattered: the coach’s comment is in one note, the clip is in your camera roll, and the next practice question has been forgotten. The intended value is continuity between sessions, not replacing the person who watches you practise.

An illustrative starting point is a note saying which grip you had, what you attempted, what the partner did and what your coach actually said. Ask the AI to help organize the unresolved question, rather than declaring a cause from the result alone. Bring the suggestion back to your coach before changing a technical task. This example is an editorial workflow, not a claim that we measured an improvement in users.

On 13 September 2026 we checked the Japan App Store listing: Judo AI - 柔道コーチ, by Kenta Hata, is listed for iPhone, with free download and in-app purchases. That does not mean every feature is free. Check your local listing for device compatibility, interface language and the current subscription terms; a translated comparison page does not establish those conditions.

• About Judo AI

Sources: Judo AI · Kenta Hata via Apple App Store

Judokai — a reference for demonstrations

Judokai’s listing describes multi-angle demonstrations, kata, bookmarks and offline videos. Its role in this selection is revisiting technical material. For example, after a lesson you may want to locate the demonstrated waza and return to the same movement before asking your teacher about a detail. That is a different need from explaining the outcome of your own contested exchange.

Keep the reference connected to the lesson’s conditions. Was the movement shown cooperatively, from a particular grip, or within kata? Do not silently treat those conditions as identical to free randori. Write down the detail you want clarified rather than trying a newly seen action unsupervised. Coverage of Kodokan techniques does not by itself mean an app is published or endorsed by Kodokan.

Sources: Eduardo Costa Producoes Audiovisuais LDA via Apple App Store

JudoTV — watching competition in context

The IJF presents JudoTV as its streaming and on-demand viewing platform. It is the relevant category when you want competition footage and commentary rather than a personal training record. Choose a question before viewing: what happened before an attack, how did the opponent respond, and what followed? A full exchange can offer more context than a highlight showing only the finish.

This is an observation example, not a claim that copying an elite sequence will work for you. Athletes differ in experience, physical capacities and available options. If a hand is hidden, mark it as unseen; if you are discussing a ruling, consult the applicable rules rather than treating your interpretation as official. Check what your viewing entitlement actually includes instead of assuming every event is accessible.

Sources: International Judo Federation via Apple App Store

Athlete Analyzer — structured work with a coach

Athlete Analyzer describes video tagging, a training diary and planning tools. Its judo help documentation also explains opponent views and clip notes, including discussion in the team version. Consider this category when you and your coach need an organized way to revisit selected exchanges and compare observations, rather than a single quick answer after practice.

Agree what a tag means before counting it. An attempted attack, a scoring attack and an exchange starting from your preferred grip are not interchangeable events. Missing footage and inconsistent tagging can make a chart misleading. Ask who will do the tagging, who will review the notes and whether that effort fits the actual coaching routine. We have not tested its analysis against Judo AI or established that either produces better results.

Sources: Athlete Analyzer · Athlete Analyzer

Choosing Judo AI instead: what you gain and what you give up

This compares jobs, not scores. It restates the public descriptions cited in this guide and the store conditions below; we did not test the apps side by side or measure results. Judo AI publishes this guide.

A practical choice: the same failed attack, different needs

Imagine a fictional judoka who repeatedly remembers only “seoi-nage did not work.” If the missing piece is the name or demonstrated movement, start with reference material. If there is a clip, review the entry and the visible response with the coach. If the next question gets lost between sessions, a log-and-planning tool may be the useful addition. These are different bottlenecks, not successive compulsory purchases.

A simple note could contain the starting situation, the attempted action, the partner’s response, the coach’s observation and the next thing to check. Leave unknowns blank or mark them unknown. Do not replace “I could not see the sleeve” with “my sleeve grip was wrong.” The app is useful if it helps preserve those distinctions and recover the note when needed.

• Judo Practice Log Template

Which judo app should a beginner start with?

Start with the task your teacher has already set, not a catalogue of unfamiliar techniques. If you only need to remember a correction, a short note is enough. If you want to connect that note to AI questions and your next practice plan, we recommend considering Judo AI. Keep the teacher’s instruction separate from the app’s suggestion, and ask about anything you do not understand before trying it.

• About Judo AI

Sources: Judo AI

Do I need a paid app, or will a notebook do?

A notebook or the practice-log template below is a reasonable starting point if you can retrieve your notes when needed. Consider Judo AI when linking your reflections, questions and plans is the missing step. Before subscribing, check whether that workflow is included in the offer shown to you. More features are not useful if recording them takes attention away from practice.

• Judo Practice Log Template

What should you check before keeping an app?

Try a familiar, low-risk task rather than judging only a polished screenshot. Can you find the reference you wanted? Can you recover your own note without a lengthy search? If a tool supports sharing, can the intended coach access the relevant item without confusion? Check those tasks using ordinary material you have permission to use, not a sensitive competition archive uploaded just to explore a feature.

Then ask what burden the workflow adds. Re-entering the same training note in several places can make an otherwise attractive setup impractical. A useful trial outcome may simply be that a coach’s correction remained easy to retrieve. It is not proof of improved judo ability, and there is no universal number of sessions after which every reader should see progress.

• Judo Video Analysis App Workflow for Better Technique

Check device, language and purchase conditions

A free download is not a promise of free access to every feature. The US listings for Judokai and JudoTV show in-app purchases. We have not made a global price table: currencies, access packages and availability can differ, and our checks do not establish the terms shown on your device. Read the current offer and renewal conditions before accepting anything.

Sources: Eduardo Costa Producoes Audiovisuais LDA via Apple App Store · International Judo Federation via Apple App Store

Check your device, language and purchase terms

Once a tool fits your needs, check whether its requirements fit you. This table summarizes official listings reviewed on 2026-09-27; it is not a hands-on test or a worldwide availability check. Listed languages do not confirm the translation of every screen. A free download may still require a subscription or extra purchases. Check the terms shown before signing up.

Where can I check a judo app for Android?

Judokai has an identifiable official Google Play listing linked below. The retrieved page may be outdated, so this is a place to check, not confirmation that you can install it today. Current eligibility for your device, country and account is unverified. Check the store on your device for availability and purchase terms; do not assume the iPhone version has identical features or contracts.

Check Judokai on Google Play

Treat training footage as other people’s information too

A randori clip can identify a partner, a child, a club or a location even when your purpose is only personal review. Before recording, uploading or sharing, follow the dojo’s arrangements and obtain the permissions appropriate to the people involved. Check the selected service’s current privacy and deletion information. This guide did not audit cloud storage, retention or account deletion, so it does not label one option the safest.

Do not assume an App Store privacy label is an independent security test. Keep the first evaluation simple and avoid uploading material you do not have authority to share. When the important question is an injury, safeguarding concern or an official decision, choose the appropriate qualified person or organization; an app comparison cannot settle that question.

Which option should you choose?

The right tool depends on who is choosing and what is missing. These are starting points, not a ranking.

• Beginners: Follow your coach and keep a notebook or the practice log template first. Add Judokai when you mainly need to see a technique demonstrated, and Judo AI when your notes and questions start getting lost between sessions.
• Competitors: Use JudoTV to study the contests your access covers, and Judo AI to turn what you noticed in randori into the plan for your next session. If your coach already tags footage, Athlete Analyzer keeps that review in one place.
• Coaches and clubs: Athlete Analyzer fits structured, tagged footage review shared with athletes, on a subscription. Judo AI is built around an individual judoka's notes and plans; check its current features before adopting it for a whole club.
• Parents: Start with the coach and the dojo's rules on filming. Read the purchase and renewal terms in your store before paying, and do not share other children's footage without consent.

Choose Judo AI if you want practice notes, questions to an AI and your next practice plan in one place on iPhone.

See what Judo AI does

A useful next step without another compulsory app

If you only want to read about judo, you do not need an app. Use the glossary, an article or a paper and stop when your question is answered. A paper notebook can also be enough for a short practice record. More digital tools are not automatically better, especially if they take attention away from the lesson or create records you never revisit.

If your actual need is to connect notes, questions and the next plan, review Judo AI’s feature page and its current App Store listing. If it is reference, viewing or coach-led tagging, follow the corresponding source below instead. Keep the choice provisional: retain the tool when it makes the next useful action clearer, not because this publisher placed its own product in the guide.

Sources

1. Judo AI: Training Coach — public product features — Judo AI. Sources checked: 2026-09-12
2. Judokai — US App Store description — Eduardo Costa Producoes Audiovisuais LDA via Apple App Store. Sources checked: 2026-09-12
3. JudoTV — US App Store description — International Judo Federation via Apple App Store. Sources checked: 2026-09-12
4. Athlete Analyzer — Judo athlete tools — Athlete Analyzer. Sources checked: 2026-09-12
5. How to use opponent scouting for judo — Athlete Analyzer. Sources checked: 2026-09-12
6. Judo AI - 柔道コーチ — Japan App Store — Kenta Hata via Apple App Store. Sources checked: 2026-09-13

Read more

• About Judo AI
• Judo Practice Log Template
• Judo Video Analysis App Workflow for Better Technique
• Judo glossary
• Research library
• Judo Knowledge