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Nederlands
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I will develop mobile app ios android web development ui ux design
Marcin Walczyk
Vetted Pro
Top Rated
5,0
5,0
Wat mensen goed vonden aan deze freelancer
kckatcreative
Verenigde Staten
We are an established business with a subscription payment model. We needed a professional design and software development company to continue improving our...
cashflowempire
Verenigde Staten
Great experience! Marcin's team did a detailed code review and made a solid plan to refactor our legacy code. Additionally, they identified and resolved one...
hugoalmeida825
Verenigd Koninkrijk
I'm no tech guru, but this team made the process a breeze! They've added a mobile payment system to my app. They took care of everything, including the design,...
carolgaus
Spanje
Switched to this mobile app development firm after our previous one couldn't track marketing efforts effectively. Initial consulting with Marcin was a game-changer...
Gescreend door Fiverr Pro
Marcin Walczyk is geselecteerd door het team van Fiverr Pro vanwege diens expertise.
Over deze dienst
At Inventively LLC, we build high-stakes, end-to-end apps for web, mobile, AI, and hardware. With 10+ years of expertise, we help entrepreneurs and organizations turn ideas into scalable, revenue-driving products.
Our projects typically range from $20k to $100k and run 1 to 5 months. We cover the full cycle: product workshops, UI/UX design, scalable architecture, development, and long-term support. Clients have achieved over $2,000,000 per year in in-app purchases under our guidance.
We are an official RevenueCat technology partner, a San Francisco company valued at $500M with $100M+ raised, powering over $8B in annual transactions. This gives our clients proven subscription monetization and growth strategies.
We specialize in profitable software businesses that last. Mobile and web apps, AI solutions, hardware integrations, payments and cloud systems, and reliable maintenance.
Kindly contact me: Contact seller -> Ask a question.
Maak kennis met Marcin Walczyk
Marcin Walczyk
Vetted Pro
We build profitable software businesses: Marcin, CEO Inventively LLC
Top Rated
Marcin Walczyk maakt deel uit van de Fiverr Pro-catalogus en is zorgvuldig uitgekozen door het Fiverr Pro-team vanwege zijn of haar vaardigheden en expertise.
Gescreend voor
Mobiele app ontwikkeling
Onderhoud van mobiele apps
- Afkomstig uitVerenigde Staten
- Lid sindsfeb 2019
- Gem. reactietijd1 uur
- Laatste levering3 maanden
Talen
Engels
Build scalable mobile, web, AI, and computer vision apps with a top-tier engineering team at your side. Leverage our expertise in development, design, payments, and marketing integrations.
As an official RevenueCat technology partner, a San Francisco-based startup that has raised over $100 million in funding, is valued at $500 million, and powers a platform processing over $8 billion annually, we're ready to help you achieve great success.
We build long-term partnerships with entrepreneurs who need a reliable tech team to deliver and maintain the software behind their growing business.
Mijn portfolio
Veelgestelde vragen
Can you sign in an NDA? ( Non-disclosure agreement )
Absolutely. We value confidentiality. I encourage NDAs and can use yours or provide our template. Rest assured, only essential team members access your data, ensuring your project's security and peace of mind.
By working with Inventively LLC will I get direct contact with Marcin?
Yes, by working with Inventively, you'll have direct contact with Marcin. His unique expertise in transforming app businesses into profitable entities ensures your project receives the best guidance. We take on a limited number of projects, ensuring you get the dedicated focus you deserve.
What kind of access and control will I have over my project during development?
As our client, you will have real-time access to project progress, budget management, and goal status, ensuring full transparency and control at every step.
Do I have ownership of my mobile application, including the code?
Yes, you are the owner of Intellectual Property rights at all times.
Will you assist me in uploading my Android app to the Google Play Store? / my iOS app to the Apple Store? How?
Yes, of course. We will upload your Android application to the Google Play Store and your iOS app to Apple Store. It is also a part of our app development process. We will also guide you through the app setup on the stores regarding the marketing materials and descriptions.
Reviews
59 reviews van deze dienst
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Specificering van de beoordeling
- Communicatieniveau van de freelancer
- Kwaliteit van de levering
- Waarde van de levering
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Meest relevant
S 
sinamarketing
Canada
Marcin and the team delivered exactly what I needed, on time and without friction. Communication was clear, and they took ownership, making the process smooth.
US$ 600-US$ 800
Prijs
9 dagen
Looptijd
Nuttig?N 
nystroemdigital
Terugkerende klant
Noorwegen
Excellent consultations, very insightful and practical, thank you again.
US$ 400-US$ 600
Prijs
9 dagen
Looptijd
Nuttig?G gabriellee6
Canada
Inventively was a great partner from the first interaction. Marcin kept things clear and business-focused, without overcomplicating anything. The collaboration felt easy, efficient, and aligned with how we like to work.
US$ 1.500-US$ 2.000
Prijs
2 weken geleden
Looptijd
Nuttig?N nystroemdigital
Terugkerende klant
Noorwegen
Really good call with Marcin. Felt like talking to a trusted advisor. Gave us clarity straight away. Appreciate it and would definitely recommend!
US$ 200-US$ 400
Prijs
6 dagen
Looptijd
Nuttig?C 
compoundgroup
Terugkerende klant
Spanje
Very strong experience and a calm, confident approach. Marcin looks beyond the immediate task and focuses on scalable solutions and strategy. I appreciated his time, honesty, and the feeling of working with someone truly invested.
US$ 400-US$ 600
Prijs
2 weken geleden
Looptijd
Nuttig?
Reviews
59 reviews van deze dienst
| (59) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Specificering van de beoordeling
- Communicatieniveau van de freelancer
- Kwaliteit van de levering
- Waarde van de levering
Sorteer op
Meest relevant
S sinamarketing
Canada
Marcin and the team delivered exactly what I needed, on time and without friction. Communication was clear, and they took ownership, making the process smooth.
US$ 600-US$ 800
Prijs
9 dagen
Looptijd
Nuttig?N nystroemdigital
Terugkerende klant
Noorwegen
Excellent consultations, very insightful and practical, thank you again.
US$ 400-US$ 600
Prijs
9 dagen
Looptijd
Nuttig?G gabriellee6
Canada
Inventively was a great partner from the first interaction. Marcin kept things clear and business-focused, without overcomplicating anything. The collaboration felt easy, efficient, and aligned with how we like to work.
US$ 1.500-US$ 2.000
Prijs
2 weken geleden
Looptijd
Nuttig?N nystroemdigital
Terugkerende klant
Noorwegen
Really good call with Marcin. Felt like talking to a trusted advisor. Gave us clarity straight away. Appreciate it and would definitely recommend!
US$ 200-US$ 400
Prijs
6 dagen
Looptijd
Nuttig?C compoundgroup
Terugkerende klant
Spanje
Very strong experience and a calm, confident approach. Marcin looks beyond the immediate task and focuses on scalable solutions and strategy. I appreciated his time, honesty, and the feeling of working with someone truly invested.
US$ 400-US$ 600
Prijs
2 weken geleden
Looptijd
Nuttig?
