While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

See what reviewers are saying

Rated 4 out of 5 stars

Good presentation, intensive enough course, interesting topics were touched. Good practical part, but some exercises (especially about KSP) were not for quick doing and required more time to think and... See more

Company replied

Rated 5 out of 5 stars

Actual great deep dive into Kotlin coroutines. From suspension to cancellation! Knowledge flows like cold air through windows and channels to our brains like hot coffee to our bodies! The breaks... See more

Company replied

Rated 5 out of 5 stars

A great workshop. If you already know a language like Java and want to learn Kotlin, this is the way to go. Many Kotlin Core topics are covered. Marcin codes each feature live with very small exa... See more

Company replied

Rated 5 out of 5 stars

Marcin is very competent and passionate teacher. The workshop was packed with knowledge, along with practical exercises which were very close at the real Android/Backend everyday work tasks. The struc... See more

Company replied

Company details

  1. Software Training Institute
  2. Educational Institution
  3. Private Tutor

Written by the company

We teach Kotlin with a focus on the best practices.


Contact info

4.5

Excellent

TrustScore 4.5 out of 5

45 reviews

5-star
4-star
3-star
2-star
1-star

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

The training was interesting

The training was interesting. The topics are not documented well, and it was nice to hear about them from Kotlin professional.

May 27, 2025
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Hi Wojciech,
Appreciate the 5 stars! We're happy the training brought clarity to less-covered Kotlin topics.
The Kt. Academy Team

Rated 4 out of 5 stars

Good course

Good presentation, intensive enough course, interesting topics were touched. Good practical part, but some exercises (especially about KSP) were not for quick doing and required more time to think and understand that we had.

May 27, 2025
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thanks for your review Alexey!
We're glad you enjoyed the course and found the topics engaging. We appreciate your note on the KSP exercises — we'll work on improving the pacing.
Hope to see you again soon!
The Kt. Academy Team

Rated 3 out of 5 stars

Good knowledge but not engaging enough

Good knowledge but not engaging enough. Found it difficult to focus two days in a row for 7-8 hours even with the frequent breaks.

May 9, 2025
Kt. Academy logo

Reply from Kt. Academy

Thanks for the feedback – we truly appreciate you taking the time to share your experience. Our open workshops are intentionally fast-paced to cover the essential material in a short time, but we understand that this format doesn’t work for everyone. It’s a pity we didn’t hear about the issue with the pace during the workshop itself – we always welcome such feedback in real time so we can better support participants.

That said, we have good news: we’re launching a new format soon – a cohort-based course spread over 5 weeks. This will allow for a more balanced learning experience with more time to absorb the material, ask questions, and engage more deeply. We hope to see you there!

Rated 5 out of 5 stars

Great Kotlin Coroutines workshop

Very good structure of workshop, well managed, many examples and practical exercises.

February 21, 2025
Kt. Academy logo

Reply from Kt. Academy

Thank you for your feedback Adam!
We're glad you found the Kotlin Coroutines workshop well-structured and practical. Looking forward to seeing you at future sessions!

Rated 4 out of 5 stars

Perfect to learn kotlin with examples and exercises.

It was good, Marcin has a lot of insights and examples of how to use certain functionalities of the language.

I highly recommend this course to anyone who wants to learn kotlin

February 7, 2025
Kt. Academy logo

Reply from Kt. Academy

Thank you, Mohit, for your kind review!
We're glad to hear that you found the course insightful and enjoyed Marcin's examples. Your recommendation means a lot! If there's anything we can do to make your experience even better, we'd love to hear your feedback.

Happy coding with Kotlin!

Rated 5 out of 5 stars

An excellent workshop

An excellent workshop led by the experienced Marcin Moscala, covering all key areas with plenty of hands-on exercises.

February 21, 2025
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thank you, Adam!
We are glad you enjoyed the workshop and hands-on exercises. Hope to see you in another session soon!

Rated 5 out of 5 stars

A very well-managed workshop

I had the pleasure of attending their workshop, and the experience was outstanding. The preparation materials were meticulously crafted, the organization was flawless, and the trainer's expertise and welcoming approach made the session truly exceptional.

October 23, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thank you for your feedback! We're delighted you enjoyed the workshop.
We look forward to seeing you at future sessions!

Kt, Academy Team

Rated 4 out of 5 stars

A very nice 3-days workshop

A very nice 3-days workshop! We deep dive into Coroutines and Flows. We got a deeper understanding of both good usages of Coroutines and how it works under the hood. We achieved a lot of exercices too.
Just two elements of improvement:
- I think the part on cancellation and exceptions handling was too short (since it's may be the harder topic IMO) and may be not at the right time: we went from 11h to 13h IIRC, and we were a bit tired (and hungry) at the end.
- I have the feeling that sometimes people didn't get answers to their questions. Either because it was not the right time to ask about this topic (but we didn't get back to the question later) or because it looks as a stupid question from the coach's point of view...

October 23, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thanks, MT, for sharing this! It’s fantastic to hear that you found the workshop valuable and got a lot out of the exercises.

For the points you raised:

Cancellation and Exception Handling: This can definitely be one of the trickiest parts of working with Coroutines, and we’ll look at ways to give it more time and energy in future sessions.

Answering Questions: We’re sorry if it felt like some questions didn’t get the attention they needed. We’re here for you, and while we aim to answer everything, time constraints sometimes make it challenging. Please know that every question is important to us, and we’re working on ways to ensure everyone feels heard and comfortable to ask.

Thanks again for your feedback and honesty!

Rated 5 out of 5 stars

Great experience

Thanks to the course, I have built up a much better understanding of Coroutine.

Marcin Moskala was really invested in making the learning clear and understandable

October 25, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thank you, Hugo, for your feedback! Your experience is exactly what we aimed for with the Kotlin Coroutines Workshop.

Rated 5 out of 5 stars

Great Kotlin coroutines workshop

Marcin is very competent and passionate teacher. The workshop was packed with knowledge, along with practical exercises which were very close at the real Android/Backend everyday work tasks. The structure was very good, with breaks where needed, the pace was intense. Marcin reacted to all the questions and always provided answers and in-depth explanations. I will definitely join further workshops from Kt.Academy!

October 25, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thank you, Lukasz!
We’re delighted to hear that the workshop structure, exercises, and Marcin’s teaching style made it a valuable experience for you.
We look forward to welcoming you to future workshops at Kt.Academy!

Rated 4 out of 5 stars

Good amount of knowledge, but maybe too much

I liked the comprehensiveness of the course. We started from the very basics and finished with some more advanced stuff. Marcin is a very knowledgable person, friendly and willing to explain everything in details. Not sure what was the reason, but some parts were interesting while some were boring and tiring. There were also some small problems with internet connection from the conductor's side. There was also time for some exercises during the course. For me, coming from JS world, there were too much mentions of Java which I have little knowledge about so this was of little value. All in all it was a lot for a 3 days, 8h course, I hope I will remember something! :)

September 27, 2024
Kt. Academy logo

Reply from Kt. Academy

Mateusz, thank you for your thoughtful feedback. We're happy you liked the structure of the course and Marcin’s teaching style. We understand that some parts may have felt less engaging, and we'll work on improving that balance in the future.

We also acknowledge the technical issues and will address them going forward. As for the focus on Java, we appreciate your point and we understand that balancing different topics and keeping things engaging can be a challenge, especially in an open workshop setting with participants from varied backgrounds.

We hope you’ll still find value in what you’ve learned. Thanks again!

Rated 5 out of 5 stars

Lessons follow all best practices

In particular:
- The theory is always covered in IDE, following everything as a code explanation approach
- A big bunch of exercises, including optional.
- Answering all audience questions
- Keeping the audience in shape by asking questions

September 27, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thank you, Erik! We are happy we made this workshop experience worthwhile!

Rated 5 out of 5 stars

Kotlin Coroutines -> 18-20.09.2024

Actual great deep dive into Kotlin coroutines.
From suspension to cancellation!
Knowledge flows like cold air through windows
and channels to our brains like hot coffee to our bodies!
The breaks were yielded perfectly, so we could resume food and coffee consumption in peace.
Great workshop btw. :)

September 20, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thank you Radziu for so metaphoric review of the Kotlin Coroutines workshop. Organizing a workshop for a group like yours is always a pleasure!

Rated 5 out of 5 stars

A great experience that I highly…

A great experience that I highly reccomend for all serious android developers. The instructor is very professional and has given us all the information needed to master coroutines. During the workshop there were also many useful exercises that we were asked to solve.

April 10, 2024
Kt. Academy logo

Reply from Kt. Academy

Ciao Gianpaolo!
Thank you for the feedback after the Kotlin Coroutines workshop.
Have a great day. :)
Kt. Academy Team

Rated 5 out of 5 stars

best workshop i have ever attended.

best workshop i have ever attended.
It wasn’t just about theory; it included hands-on exercises that allowed me to apply what I was learning.
instructor is highly knowledgeable and i look forward to attend other workshops of him. highly recommended for all kotlin developers.

April 10, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thank you Gianpaolo! We are looking forward to it!

Rated 5 out of 5 stars

A great course for me as a Java…

A great course for me as a Java developer that wants to learn Kotlin. It covered the basics and more complex aspects of the language, combining theoretical and practical exercises very well.

March 28, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Thank you Valand! We are pleased to hear that.

Rated 5 out of 5 stars

Great training

Great 3 day intense training with useful information.

March 28, 2024
Unprompted review
Kt. Academy logo

Reply from Kt. Academy

Hello Gabriel!
Thank you for your vote! It means a lot to us.
Best,
Kt, Academy Team

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.

Learn more about other kinds of reviews.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look