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 wor... See more
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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.
Contact info
Mary-Anderson-Str. 6, 53332, Bornheim, Germany
- 0228 84 250 931
- mail@proper-api.de
- proper-api.de
Really transparent and professional assessment
Being a foreigner who arrived two months ago in Germany, having access to vital information only available in German is a challenge, so I booked a free call with Proper API. Mr. Klingsporn was the specialist assigned to my case, and it was truly awesome. There are so many things I didn't know about tax policies and investments, so I will definitely get back to them soon.

Reply from Proper API
Honest and Convenient
I came across proper-api online. My experience with them has been quite comfortable and convenient. They suggested things to me that are in my best interests rather than pushing me for everything. Andre explained everything in a detailed manner and with patience. I have signed up with them and hope to have a similar smooth experience in future.

Reply from Proper API
Excellent service!
I was a client of André Gueit during his financial advisory services in Proper-Api. The conversation we had was very open and insightful. He was absolutely honest when it comes to knowing the limits of where he can help or not. In addition, I always observed transparency and a desire to help expats in Germany with financial topics. Moreover, he has a clear sense of purpose that should be a fundamental tool for consultant professionals. Individuals who empower unprotected people must be empowered. I highly recommend him and Proper-Api without reservation.

Reply from Proper API
Consultant lacked basic empathy
To preface this, this is probably not reflective of the company values and perhaps only a particular consultant. At least I’d like to believe that. I want to also preface this by saying that I am a very friendly, introverted and sympathisch person who isn’t quick to get offended at all. I also took some time to process before I posted this review so this is not a “rant”.
I was in discussions with a consultant and had about 2 or 3 appointments. The consultant appeared to be quite knowledgable and competent. But lacked serious people skills / basic empathy and absolutely rude.
I don’t want to go into all details because it includes my health conditions but I have to summarise, I was asked very personal questions about my health which I didn't want to divulge. I tried to go around it without outright saying it because I was uncomfortable. He then starting behaving in a rather rude manner. He basically then threatened me that he will be able to see all my health details anyway so to just tell him the truth. After which I felt pressured and awkward and told him (that I am in psychotherapy for depression after I lost family members to covid).
I understand that trying to hide this was probably not the best move on my part but I simply was not comfortable going into such deep personal details, and I should not be expected to. I understand that details are needed for choosing the right insurance product but was that really the way to go about it?
And I have spoken to other consultants in other companies who asked me for information in a balanced and neutral manner, which is truly enough.
After divulging this information, the consultant basically lost interest in selling me any insurance products, and told me he will talk to me when my husband is back. On the day of the appointment, my husband was not in Germany and not employed in Germany at the moment so I got on the scheduled call without him thinking I will summarize the situation for him. But the consultant refused to discuss with me and told me to ask for a termin when my husband is present and abruptly ended the call. It was very strange and rude.
I don't want to assume immediately that this was a sexist thing, it was probably just because my husband is the higher earning member perhaps, however it is still not better.
Why will my husband now hire you? Is this how you will get clients to trust you? I dont think so. We are more than just numbers on your client list, we are people, please remember that.

Reply from Proper API
Best advice so far. I got what i am looking for.
I am fully happy with the outstanding service I received from proper-api! ..
Initially, I was bit skeptical to go ahead with a financial advisor, but they proved to be the best choice. They assisted me in pension insurances, disability insurances, and investment strategies, and their open and honest advice backed up by facts addressed all my concerns. The accessibility and support they provided whenever I needed them were remarkable.
Special thanks to Andre and Lukas for being friendly, understanding, and helping me throughout the entire process, lifting a significant burden off my shoulders. For me, it was a long process, but they exhibited great patience and dedication, and in the end, everything worked out beautifully. My wife and I are both highly satisfied with their consultation, and I wholeheartedly recommend proper-api as an excellent financial advisor. Their punctuality, data-driven consultations, overall expertise, and their ability to handle lengthy processes with such grace truly set them apart!
Thank you !

Reply from Proper API
THE BEST FINANCIAL PLANNING SERVICE!!
I am an expat in Germany, I work as a software engineer. I had a great experience working with Proper API, I approached them to learn about tax saving strategies, and potential investment opportunities, and also real estate. They have a holistic approach when it comes to financial planning, I had 4 sessions with the cofounder and he provided a lot of valuable information, and together we came up with a plan tailored to my circumstances and goals, all of this and I DIDN'T have to pay for anything or commit to anything!
I am very satisfied with my experience and I HIGHLY RECOMMEND! their products and services to everyone.

Reply from Proper API
Proper Api has been very helpful in…
Proper Api has been very helpful in providing me the right support for insurances. I have worked with Maximilian Sieger and the whole process was very smooth. He helped me choose the best possible insurance and gave us a lot of time to discuss and was very patient. I would highly recommend Proper Api to everyone.

Reply from Proper API
Very professional service
Very professional and resourceful company. They are competent and offer great advice and support. I would highly recommend them to anyone I know.

Reply from Proper API
Professional, Competent, and Dedicated
Proper AP team is very professional, competent, and dedicated. The came up with the financial strategies according to my situation, they also educate me on financial topics to help me understand and it was very important for me because I do not have any finance background. They were very patient, not forcing on anything, open to revise the strategy and gave me the freedom to decide. I worked with Mr. Ruien Hadi and Mr. Lukas Klein and both were very friendly and best at their job.
Highly Recommend!

Reply from Proper API
Competent and all-round service
Competent and all-round service. I can totally recommend Dariusch and properAPI to anyone!

Reply from Proper API
Great Consultation Experience
I have been taking consultations from Proper API for different topics related to insurance and investments, and I can happily say that my experience has been excellent. They have not just provided good consultation but have also clarified doubts with utmost patience. I would recommend Proper API for your financial goals.

Reply from Proper API
Professional and responsive. Your problem solved.
Recently I needed to figure out some personal tax complications with the Finanzamt and the Proper API team was amazing.
They are very efficient, professional and responsive. You are always supported during the whole process.
I couldn't recommend them more.

Reply from Proper API
Competent, professional and smooth
Very professional and competent consultants. They are very keen on establishing a long-term relationship with the client and getting a full understanding of their situation and specific needs. They provide tailored offers with helpful information and take the time to explain them thoroughly and answer any questions over multiple appointments. I was very comfortable during the whole process, as it went smoothly without any pressure, which is not common with other consultants.

Reply from Proper API
I had a great start with Proper API
I had a great start with Proper API. I was able to understand all the aspects of investment and how it works in Germany. Being an international and having a language barrier it’s not easy to understand the process that works in Germany and do the investment plan on our own. I would highly recommend Proper API to everybody who would like to start or continue their investment journey.
Kudos to Mr. Ruien Hadi for making it so easier to me.

Reply from Proper API

Reply from Proper API
Very Reliable
Seamless communication and very will guided advice, taking into consideration the personal preferences and situation. The consultants ensure that they find the best fitting solution and offers available in the mary, which is what one can hope for from such consulting services.

Reply from Proper API
They are very patient and reliable
They are very patient and reliable. They take the time to answer all your questions and ensure that you have all the information you need before making a decision. The staff is friendly and easy to talk to.
I can highly recommend Proper Api

Reply from Proper API
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