Mossy team at Negavatt holding Mossy air purifiers

We are Mossy

How we came to be

We are four teenagers from Tallinn 21st School who identified an issue with air purifiers. Most air purifiers use HEPA filters, which are non-biodegradable and cannot be reused. Therefore, contaminate the environment. As a result, we decided to look for a more ecologically friendly option: the Mossy air purifier, which employs only natural ingredients to filter the air.

Eliise Lehtsaar

Eliise, our CEO, is always pushing us forward and wants us to strive for greater heights. If it weren't for Eliise, we most likely wouldn't be where we are today with Mossy. That's because she's the one who signed us up for the many competitions and workshops where we got to really work on our idea.

Marii Heleen Rannala

Marii, our CMO, is our marketing and social media manager. Her fun and caring nature creates an enjoyable work environment, making her an enjoyable teammate to be around. With her knowledge and personality, she's a vital part of our team.

Frederik Rossar

Frederik, our CPO, is a visionary leader known for his attention to detail. He promotes effective product development by understanding consumer demands and motivating his team to go above and beyond.

Gregor-Mattias Froš

Gregor, our CFO, a very detail-oriented person. Numbers are his thing – with him, everything is always under control. He is very goal-oriented and he inspires the whole team.

  • Ajujaht (2023, 16. season)

    Out of 120 competitors, we were chosen for the TOP20 teams of the largest startup accelerator programme in Estonia, competing for the grand prize of 30 000 euros. In October 2023 we were chosen as the finalists (TOP9) of Ajujaht's 16th season.

  • Negavatt (2023, 10. season)

    We had the incredible honour of winning the 10th season of Negavatt, the largest accelerator programme for environmentally sustainable ideas, with the grand prize of 10 000 euros.

  • Wise Innovation Award (2023)

    At the Grand Student Company Fair, we merited the Wise Innovation Award together with a one-on-one mentoring session.

  • ISCF Most Innovative Product (2023)

    At the ISCF International Student Company Festival, out of 46 companies from 12 countries, we were awarded the Most Innovative Product Award.

  • Best Student Company of Estonia II place (2023)

    Out of 412 student companies in Estonia, we came second, and got a special prize from the Chamber of Estonian Patent Attorneys.

  • And many more to come...