Top 5 Big Data Angel Investors in Hungary in May 2026

Portfolio highlights

• sento.io — sento.io builds infrastructure to enable effortless B2B data exchange
• Rebill — Rebill provides merchants with a unique control panel, and an API (programmatic environment) as well as pre-made payment pages so they can sell online in multiple regions very quickly, integrating with the financial entities and payment gateways they want.All customer's information, including non-sensitive card and subscription information,are stored at Rebill. Who, in turn, manages the recurrence of the collection of subscriptions, monitoring of card expiration and automatic collection retries to avoid delays and securing a predictable revenue model.Rebill is the last mile solution to improve the shopping experience for international stores. Provides flexibility to change providers: banks, or payment gateways, without losing information and in a matter of minutes.From Rebill, businesses can integrate multiple cloud services such as CRM (for customer management), or ERP (for business management), as well as local invoicing systems, among others.
• SEON — SEON Fraud Prevention tools help organisations reduce the costs and resources lost to fraud. Spot fake accounts, slash manual reviews and cut chargebacks now.

Portfolio highlights

• sento.io — sento.io builds infrastructure to enable effortless B2B data exchange
• Rebill — Rebill provides merchants with a unique control panel, and an API (programmatic environment) as well as pre-made payment pages so they can sell online in multiple regions very quickly, integrating with the financial entities and payment gateways they want.All customer's information, including non-sensitive card and subscription information,are stored at Rebill. Who, in turn, manages the recurrence of the collection of subscriptions, monitoring of card expiration and automatic collection retries to avoid delays and securing a predictable revenue model.Rebill is the last mile solution to improve the shopping experience for international stores. Provides flexibility to change providers: banks, or payment gateways, without losing information and in a matter of minutes.From Rebill, businesses can integrate multiple cloud services such as CRM (for customer management), or ERP (for business management), as well as local invoicing systems, among others.
• SEON — SEON Fraud Prevention tools help organisations reduce the costs and resources lost to fraud. Spot fake accounts, slash manual reviews and cut chargebacks now.

Portfolio highlights

• Kooky — - What is kooky? kooky is a digital cup smart system and offers you the possibility to dispose your reusable cup on your way in an easy and sustainable way through kooky boxes.- How does kooky work? You order your drink as usual and get it in a kooky cup. You simply pay for the drink plus 1 CHF deposit. When you return the cup in a kooky drop offbox, you will immediately get your 1 CHF deposit credited in the wallet of your app.- What do I have to do when I got the cup with the drink? Simply scan the QR code of the cup with the kooky app (registration required), and the cup will be paired to your app account.- Where can I return the cup? In all the kooky boxes around town and in all the venues of the kooky network. You can find both in the app.- How do I get my credit? In order to withdraw the credit in your app wallet, you need to enter your bank details in the app. Then you submit a payout request of the desired amount. Kooky only takes a 10% fee as cost of service, you will receive a receipt for each withdrawal.- What does kooky do with the cups? Our employees empty the kooky boxes and bring the cups to our rinsing logistics. There, they are cleaned according to hygiene regulations and standards, picked, packed and distributed to our partners again.- Are e-vehicles used for logistics? Yes, the logistics for collecting and distributing the cups takes place exclusively with electric vehicles.
• Kitchenful — Kitchenful is an app for personalized recommendations of recipes, which gets users the ingredients delivered from their local supermarket. Kitchenful's algorithm always suggests the most popular recipes that are 40% cheaper than meal kits.
• SEON — SEON Fraud Prevention tools help organisations reduce the costs and resources lost to fraud. Spot fake accounts, slash manual reviews and cut chargebacks now.

Portfolio highlights

• Ascendx Cloud — Supercharge Salesforce with connected apps that streamline sales, automate data, and drive enterprise-scale growth - Salesforce Solutions By Ascendx
• Firenze — Firenze aims to expand financial services by extending investment-backed lending to a wider audience, recognizing its importance in wealth creation and preservation. The founding team aims to democratize Lombard lending, making it accessible to all, while focusing on mass affluent clients.
• Isembard — Isembard has experience from the military, government, large enterprises, and a successfully exited technology business.

Portfolio highlights

• Vitt — Simple sharp startup setup
• Terra One — Terra One engages in the development and operation of large-scale battery storage systems.
• Exakt Health — Exakt Health is the physio app for sports injuries. The Exakt Health app guides users through self-diagnosis for frequent sports injuries and then creates an individualized rehabilitation plan.