Proper API has been really helpful in choosing right financial strategies for me and my wife. Special thanks to Lukas for taking the time to explain everything in detail and addressing all our concern... Voir plus
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Lisez les avis des autres
I have been using Proper API services for the past few months with my consultant, Andre, and so far I am very satisfied with the experience. I really enjoyed my consultations: they were always c... Voir plus
L'entreprise a répondu
I had my kick-off Meeting today with Denis Zelenkovskyi and it was the most honest session I have ever had with these kind of service-providers. he was completely transparent about how much does it ov... Voir plus
L'entreprise a répondu
It has been a great experience receiving consultation from Lukas and Pierre. Lukas has helped us with a wide range of topics, including financing, pension plans, and legal and private insurance... Voir plus
L'entreprise a répondu
À propos de l'entreprise
Écrit par l'entreprise
As an expat navigating the complexities of the German system, you need strategies that go beyond the conventional. At Proper API, we empower you to maximise your financial potential by taking advantage of the available tax, real estate, and investment opportunities. We focus on intelligent financial structures that ensure both growth and security. With our guidance, you'll learn how to accelerate your income, make informed investment decisions and automate your wealth creation processes for long-term success.
Coordonnées de contact
Mary-Anderson-Str. 6, 53332, Bornheim, Allemagne
- 0228 84 250 931
- mail@proper-api.de
- proper-api.de
Proper API is the Real Deal!
I have to admit, I was a bit skeptical at first. It’s always hard to know who to trust when looking for a service like this. But Proper API completely exceeded my expectations! Denis and Pierre were incredible from day one; friendly, professional, and genuinely helpful every step of the way.
They made a process that could have been stressful feel easy and smooth. Their expertise, patience, and attention to detail really stood out, and it’s clear they truly care about their clients. I want anyone looking for reviews before making a decision to know this: Proper API is the real deal. They deliver exactly what they promise, and working with Denis and Pierre made the whole experience a pleasure.
I can’t recommend them highly enough!

Réponse de Proper API
highly customer focused
Out of all the investment advisory firms I spoke to, Proper API came across as the most professional and customer focused. Impeccable onboarding experience, structured thinking and streamlined admin processed are 3 key reasons I look forward to an enduring relation.
Build personal financial goals with ProperAPI
ProperAPI helped me understand the nuances of German tax and insurance system in the most simple way possible. It helped me take key decisions to build a strong roadmap towards achieving true financial independence. To someone who is new to Germany and has very less knowledge about financial investments in general, I can highly recomment ProperAPI.
Beginner Review
I've been with them for now more than 6 months, Lukas and his team has helped me a lot in understanding the German tax system and financial infrastructure. It was a great experience for me from no information to now a better understanding of the system. Lukas spent a lot of time with me understanding my situation and helped me to understand all the options from their offerings, and figuring out which are most advisable for my situation. The response of the team until now is very prompt and much appreciated!
Financial strategy never been easier
I feel lucky that I saw an ad with proper api services. My husband and I did our full financial strategy with Dariusch and his team - from health insurance and pension to investments. After a year working with the guys, I feel financially educated and safe. One thing I want to highlight in particular is the service level. No matter if we got cold feel about an investment or needed an extra call to ask questions - we always got extra attention, what is absolutely crucial when customers trust you with money.
Helpful, Knowledgeable, and Easy to Work With
Proper API has been a real help in navigating the German system, something that can feel overwhelming as an expat. Their team clearly knows their stuff and we appreciated how approachable and supportive they were throughout the process.
They took the time to explain things in detail and clearly, offered expert and honest advice, and were always willing to answer questions (no matter how small). It really felt like they had our best interests in mind, and that made a big difference.
If you’re new to Germany and trying to make sense of everything, I’d definitely recommend reaching out to Proper API. It’s good to have someone reliable in your corner.
10/10 Experience
Working with ProperAPI has been very reassuring and smooth. They are very patient in answering all my queries promptly and offering me tailored-advice according to my circumstances and needs!
Excellent Investment management experience for expats in Germany
I was introduced to ProperApi by my friend who is enthusiastic about different investments plans recently and had the pleasure of working with ProperApi that truly exceeded my expectations, especially as a non-EU citizen navigating the financial landscape in Germany.
From the very beginning, Denis was incredibly knowledgeable and attentive. He took the time to understand my financial goals through multiple discussions and tailored a strategy that aligned perfectly with my needs.
What impressed me the most was the seamless integration of Proper API into their services.
Thanks to the team's expertise and Denis's dedicated support. Denis is really patient with his clients and explains every complicated German documents in English which is really helpful for expats who don’t speak German.
I highly recommend this investment management company to anyone looking for a reliable partner in their financial journey, especially if you're navigating the complexities of being a non-EU citizen in Germany.
Thank you for an excellent experience!
Exceptional Financial Guidance
As a non-EU citizen navigating the complexities of the German financial system, I was fortunate to find Proper API. Their expertise and personalized approach have been instrumental in helping me achieve my financial goals. Working with Denis has been a standout experience. His patience, knowledge, and dedication to understanding my unique situation made all the difference. Denis took the time to explain every detail, ensuring I felt confident and informed at each step. Proper API's holistic strategies, especially their tax optimization and investment planning, have been game-changers. Their use of advanced tools and clear communication made the entire process seamless and stress-free. I highly recommend Proper API to anyone looking for reliable and effective financial management in Germany.
Great service!!!
Proper API has offered me great service!
From regular consultation meetings to understand their business model and what would be the best financial approach for me, to finding me a property, joining me at the notary, taking care of all the contracts, setting up the lease agreements, etc etc...they were there each step of the way. Can really recommend using their team.
Amazing Customer Service
Amazing Customer Service. Really friendly guys who know what they are doing. I have gotten really good advice on managing my financials, and I'm really happy about it
Can recommend
I've received consultation services from this company regarding insurance and investment, and I couldn't be happier with the experience. The team is professional, efficient, and incredibly responsive. I especially want to highlight Lukas, who has been a pleasure to work with—knowledgeable, attentive, and always quick to provide clear and helpful advice. Highly recommended for anyone looking for trustworthy and competent financial guidance.
Top Notch Service 4,8
I am impressed by the Professional and friendly manner all my questions were handled and the attention to Details as well as the Knowledge of current Financial Instruments relevant to modern Economics and the dedication and flexibility to develop a personal strategy to financial Freedom. Looking forward to more Engagements and Interactions with much more optimism!
Great Experience
It was great working with Lukas. He was able to explain everything clearly to me with patience and supported me all the way through with great answers to all my questions
Christian and Team are really…
Christian and Team are really rockstars! From swift onboarding to tailored investment strategies. Everything was top notch.
Great service
Great customer service, Denis and the rest of the team have been very effective and professional. They have been very helpful every time.
Very professional and helpful
Firstly, a huge thanks to Christian who has kept it professional yet engaging from the start.
Secondly, the amount of pre-work done including calculations and estimations of your personal financial plan before each call is very impressive. As someone who wanted high standards, they definitely delivered.
Thirdly, it almost felt unreal with the amount of knowledge that was shared with me through multiple hours of calls with no charge and even before signing any contract with them.
Fourth, their knowledge with respect to pension plans and private health insurance was quite formidable considering the cross questioning of alternatives and choice of strategy.
Lastly, the continued service is still to be tested but given the confidence instilled by Christian and his team, I'm sure it'll be fine.
Is great to have someone like Denis who…
Is great to have someone like Denis who can explain you how the pension system in Germany works, and more than that to have someone that offer you a life financial strategy.
They always clarify your questions, give you examples, give you the necessary information and advice you regardardin your personal situation. Is up to you, then to decide how do you want part of it.
I can only recommend the service. Thank you !
Thank you!
Great experience & customer care
Great experience so far. I'm always very well informed about everything and have detailed answers to all my questions.
5 stars all around.
Great support and guidance
Great support and guidance, we had all our questions answered always. Meetings are very flexible to meet your schedule. I strongly recommend their services.
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