Opening Mastery Trainer: What Is Inside and Who It Is For

Short answer: The Opening Mastery Trainer is a one-time £27 ($35) downloadable app with about 150 ready-made openings that you drill offline, with no account. It suits players who keep forgetting lines they have already learned. It works from its built-in set of openings, so if you already keep your own repertoire file, a build-your-own tool may suit that job better.

This is our own product, so treat this post as a plain tour rather than an independent review. There are no customer ratings to quote yet, and we are not going to invent any. What we can do is show you what is inside, how the training works, and who should keep their money.

What is inside the Opening Mastery Trainer?

Inside is a downloadable app that opens in your browser and holds about 150 openings. The lines combine book moves with popular moves from real Lichess games, so you practice against replies people actually play, not only the ones a textbook prefers.

Around those lines sit the training tools: two main modes called Recall and Reconstruct, a daily plan that keeps bringing back lines you have not yet mastered, a repertoire-builder quiz, and an onboarding walkthrough for your first session. Everything runs from the one download.

How do Recall and Reconstruct actually work?

Recall shows you a position from one of your lines and asks you to find the next move. Reconstruct is harder: you rebuild the whole line from the start, with nothing on the screen to prompt you. One tests whether you can spot the move, the other whether you can produce it.

That difference matters. Most players who think they know a line only recognise it when they see it. Producing it from a blank board is what you need at the board, when nobody is showing you anything. Using both modes on the same line, a day or two apart, is a sensible habit.

What does the daily plan do?

The daily plan decides what you practice today, so you do not have to. Lines you have not mastered come back until you know them, and the ones you have mastered return for review. It removes the small decision that often ends a training session before it starts.

It does not publish a formal interval schedule on its page, so we will not call it anything fancier than a daily plan that resurfaces lines. Judge it by whether you actually open the app each day, which is the real test of any trainer.

How can you check you need one before paying?

Run a ten-minute test with a pen and paper. Pick two openings you play. Write down, from memory, the first reply you expect from your opponent in each, plus the one idea you are aiming for. Do it again after a weekend away from chess.

If you lose the replies but keep the ideas, repetition is your problem and a drilling tool will help. If you lose the ideas, you need explanations, and a good book or video will serve you better. Our post on how to remember chess openings without memorising goes through the method in more detail.

How does it compare with the other ways to train openings?

The table lays out the main routes side by side. Prices for other tools vary and change, so check them yourself before you decide.

Option	Price	Payment model	Works offline	What you get	Best for	Main limit
Opening Mastery Trainer	£27 ($35)	One-time, lifetime use	Yes, no login	About 150 ready-made openings, Recall and Reconstruct, daily plan, repertoire quiz	Players who want to start drilling today without setup	No engine, and no sync in the offline file (the optional CCS Hub adds it)
Free build-your-own tools	Free	None	Varies	A blank space for your own lines, often with an engine	Organised players with lines already written down	You do all the setup and upkeep
Subscription platforms	Varies	Monthly or yearly	Varies	Large catalogues of author-written courses	Players who want one author's explanations	Ongoing cost, and an account is needed
Video courses	Varies	One-time or subscription	Sometimes	A stronger player explaining the ideas	Players who learn by watching	Watching is not the same as recalling

For a longer look at these routes, see our guide to the best chess opening trainers, and the post comparing ready-made and build-your-own opening trainer apps.

Who is the Opening Mastery Trainer not for?

If you already keep a repertoire in a file and want to drill those exact lines, a free build-your-own tool is the better match for that job today. The trainer is built around its included openings.

It is also not for you if you need progress to follow you between devices. In the offline file, progress is saved in your own browser, so clearing browser data wipes it, and a different browser starts from scratch. The offline file has no sync, although the optional CCS Hub adds it if you want it. And there is no chess engine, only the included lines, so it will not tell you why a move is strong or check your own ideas.

Finally, it is a drilling tool. It does not replace a book, a video course, or a coach, and nothing on this page promises a rating gain.

What about free tools and subscriptions?

Free tools are very good, and for an organised player they may be all you need. They let you save your own lines, and some bring an engine, which this trainer lacks. The price is your time: you pick the openings, enter the lines, and remember to review them.

Subscription platforms offer depth and choice that a fixed set of openings cannot match, particularly if you follow a specific author. If you already pay for one and use it daily, keep it. If you are comparing costs, our post on whether a paid trainer is worth it when Lichess is free works through the numbers.

Where does it fit if you are also considering other products?

The trainer drills openings. If you want the wider library, the Complete Chess Domination Arsenal covers openings, puzzles, and endgames, but it does not include the Opening Mastery Trainer. Our post on the Arsenal versus the Opening Mastery Trainer explains which to start with.

Whichever you choose, keep your repertoire small. A couple of openings you can recall under pressure beat a dozen you half know. The free opening training hub has pages to help you decide what to carry.

Already own the trainer? You can also train it online, with one sign-in and your progress synced across your devices, through the optional CCS Hub, which has an online access plan for the trainers you own. If you would rather start online first, months on the Complete plan earn credits towards owning the offline version too (online access on its own does not earn credits). The offline file itself stays a one-time purchase with no subscription.

Questions people ask

Where to go next

Not sure which openings to learn first? Take the free chess openings quiz. For the full buyer's view across free, subscription, and one-time options, read the guide to the best chess opening trainers.