# Christoph Prinz

> Christoph Prinz is a angel investor at Flightkeys backing Travel, Rental and Sailing. See 3 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Flightkeys](https://shizune.co/investors/profile/flightkeys)
- Total investments: 3
- Last investment: Sep 2014
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/christoph-prinz-7bb55a51

Christoph Prinz is a angel investor at Flightkeys focused on Travel and Rental. Private angel investor.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Travel | 2 | 67% |
| Rental | 1 | 33% |
| Sailing | 1 | 33% |
| Tourism | 1 | 33% |
| Marketplace | 1 | 33% |

7 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Angel | 2 | 67% |
| Seed | 1 | 33% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Austria | 2 | 67% |
| Germany | 1 | 33% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Zizoo | Zizoo is a leading boat holiday platform. Zizoo is digitalising and transforming the boat rental industry (worth an estimated €33 billion), which is 10 years behind any other travel sector. They are building a global digital booking platform and website connecting suppliers (charter companies) to travelers worldwide, similar to “Booking.com forBoats”. Zizoo also provides charter companies with a powerful inventory management tool and business intelligence.They are making boat holidays affordable and accessible to everyone (bookings starts from €20 a day).Zizoo is a boat rental marketplace where you can select a boat in a location of your choice and book it as easily as a hotel room. They are not an agent; they simply connect holidayers with charters for an amazing experience on the sea. No booking fees, a simple online booking process, real time availabilities, a professional service – without the additional hassle of contacting several companies. | $713K | Seed | Sep 01, 2014 |  |
| Diagnosia | Making medicine simple. |  | Angel | Oct 09, 2013 |  |
| TourRadar | TourRadar is an online marketplace for travellers to compare and book multi-day tours. The company works with over 500 tour and river cruise operators including: Avalon, Contiki, G Adventures, Globus, Intrepid Travel, and Topdeck. TourRadar lists over 1 million tour departures, so that travellers are guaranteed to find a trip that fits theirneeds. On top of that, it is also the hub of over 50,000 real traveller reviews for customers to sift through and learn from. With global offices in Vienna, Brisbane and Toronto, there's a dedicated Customer Support team available 24/7 to ensure customers have the best possible experience while booking and on vacation.Since launching in 2010, the company has made massive leaps, becoming the leader in its industry and continuing to grow rapidly. With travel styles from marine to cultural to festivals to luxury and more the company caters to every demographic. TourRadar also founded the annual Guide of the Year and Tour of the Year awards, recognizing the industry’s top rated guides and tours. |  | Angel | Jun 10, 2013 |  |

3 of 3 investments shown.

## Co-investors
- [Axel Springer Plug and Play Accelerator](https://shizune.co/investors/profile/axel-springer-plug-and-play-accelerator) — VC Fund, 1 deal together
- [i5invest](https://shizune.co/investors/profile/i5invest) — VC Fund, 1 deal together
- [Speedinvest](https://shizune.co/investors/profile/speedinvest) — VC Fund, 1 deal together
- [The Austrian Research Promotion Agency (FFG)](https://shizune.co/investors/profile/theaustrian-researchpromotion-agency-ffg) — VC Fund, 1 deal together

## About Flightkeys

VC Fund · Vienna, Austria

Flightkeys has been founded as a research and development company in April 2015 by global aviation experts.

1 contacts available at Flightkeys.

| Name | Title | Profile |
| --- | --- | --- |
| Christoph Prinz | Managing Director | https://shizune.co/investors/profile/christoph-prinz |

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## FAQ

### What does Christoph Prinz invest in?

Christoph Prinz invests primarily in Travel, Rental and Sailing startups, most often at Angel and Seed stage. Most of the 3 investments tracked by Shizune back companies in Austria. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Christoph Prinz last invest?

The most recent investment recorded for Christoph Prinz closed in Sep 2014. Shizune tracks 3 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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