DTO Poker Trainer
The easiest way to study GTO Poker


DTO Postflop Web App
DTO Preflop Web App
DTO Preflop Web App
DTO Preflop Web App


Tired of the same old training sites, teaching you the same old concepts? Us too!

Meet DTO Poker – Your Personal Poker Trainer. We took the convenience of your mobile phone and paired it with cutting edge poker strategy produced by Dominik Nitsche and Markus PrinzDTOPostflop is a never before seen study tool that lets you train millions of postflop situations. As a poker training app for your phone or in your web browser.

Due to a lot of requests by our community, we launched DTOPreflop. Our preflop trainer lets you view all of our preflop ranges in your browser. It’s the perfect addition to our Postflop Trainer.

With DTO3way we are the only provider of top quality 3way sims on the market. The tool offers you the opportunity to gain a huge edge over your opponents by studying an area of the game that is completely unexplored still in 2022.

If you want to work on your Cash Game skills, DTOCash is the tool for you.

Train like the best!

DTO Poker lets you study the same concepts the world’s best players use to dominate today’s ultra competitive tournaments. In an extremely fun and exciting way! Studying game theory has never been easier.

Train wherever and whenever you want!

DTO Poker brings the most advanced poker game theory concepts straight to your phone or to your web browser. Now you can work on your game anywhere and anytime you like.

Train with the help of other poker players!

GTO Poker results can sometimes look strange to us humans, which is why we decided to launch a discord server dedicated to making sense of some of the crazy plays our poker app recommends!


Our revolutionary poker app brings thousands of hours of GTO study from some of the world’s best poker players straight to your phone or to your web browser. With already over 200,000,000 GTO scenarios pre-solved, DTO Poker Trainer offers a unique way to effectively study poker.


Some of the best tournament players already use DTO Poker Trainer to develop their game.
Here is what they are saying about us!

DTO Poker App Testimonial Manig Löser

Yuri “theNERDguy” Dzivielevski

‘’DTO is a great companion in my spare time and also as a warm-up for the game. In addition to making me evolve much faster, as I can study at various times of the day, I started to care much more about my decisions than about the results of my hands. This makes grinding less stressful and easier.’’

DTO Poker App Testimonial Manig Löser

Manig Löser

‘’I couldn’t recommend it more! DTO Poker is by far my favorite App of 2019. Using it will improve your Poker skillset more rapidly than any other program/ video course I’ve seen before and all that while you feel like you’re playing a game.’’

DTO Poker App Testimonial Steffen Sontheimer

Steffen Sontheimer

‘’If you’re looking to actually work on your game, putting time into DTO Poker is one of the best ways I could suggest doing so. Combine GTO learning with a fun game and you have DTO Poker.’’

DTO Poker App Testimonial Simon Rønnow Pedersen

Simon Rønnow Pedersen

‘’I think it’s an awesome app. Very easy to be productive on the move. Surprised that it’s this addictive. Also find it very useful to work with when I’m doing exercise like powerwalk, cycling or just walking outside. Normally I hate to do this, but with DTO Poker time flies by!’’

DTO Poker App Testimonial Parker Talbot

Parker Talbot // @tonkaaaap

‘’While I do regulary study by reviewing hand histories and running SIMS with friends, DTO Poker has become the easiest and most efficient way to study for me. I use it most days even if only for 30 min. in bed. The improvements continue to make this app easily worth the monthly sub and I would definitely recommend to a friend.’’

Latest News & Content

How to gain an edge in MTT Poker in 2022: ICM and Multiway spotlight

Want to gain an edge in today‘s ultra competitive tournaments and don‘t know what to focus on? This article will show you what to work on.

4 Tips to better use NLH poker solvers in 2021

A brief overview of basic poker solver mistakes and best practices.

Why not to use pre-built solutions and non-user defined game trees to review lines

A brief look at an emerging way of quickly performing “line checks” and why this form of study can be detrimental.

2 things players get wrong about ICM poker and how to fix them

ICM situations are extremely difficult and pose a unique challenge to poker players. DTO has carved out 2 common mistakes you can stop making today!

How to use poker solvers properly

A closer look at why more complex is not always better in Poker and how to use solvers more effectively.

What does GTO mean in Poker?

You are not 100% sure what GTO (Game Theory Optimal) means in poker or how to use it? No problem, DTO is here to help.

Web version available for High Roller and Grinder subscriptions!

Big news today everyone. Our webversion now supports High Roller and Grinder subscriptions!

EPT Online Super High Roller Sale!

The EPT Online kicks off in just over 30 minutes. But there’s still plenty of time to hit the lab for the Main Event.

Our first HU Spot is finally out now!

Good news everyone!
Our first HU spot is out now. 30bb Button raise BB call.

Super High Roller Tier is finally out now!

Should you already be a sub and wish to upgrade we’ll look at your case individually.


We offer many ways to stay up to date with all things DTO Poker!