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About Fido

Built to Rebuild

Fido ehf. is an Icelandic startup developing new concepts and prototypes in rehabilitation and exercise technology.

It was founded by Arnar Hafsteinsson, a health scientist with education in exercise science, health sciences, and business. He is currently conducting PhD research at the National University Hospital of Iceland, focusing on muscle strength and aging, and also teaches at university level on exercise approaches for older adults and the prevention of sarcopenia.

His earlier background in health and fitness coaching and leadership provides a practical foundation that continues to influence his approach to rehabilitation design.

Fido is in the early R&D phase, developing and testing ideas that combine clinical insight with practical design — aiming to create equipment that genuinely supports recovery and preserves strength in everyday care.

In addition to rehabilitation technology development, Fido is also expanding into clinically-aligned nutritional support solutions that complement muscle preservation, recovery and strength in frail older adults in hospital and rehabilitation settings. This includes launching a clinical-grade creatine line for hospitals, rehabilitation units, and pharmacies. Supplements are therefore a synergistic part of Fido’s mission to preserve muscle and function in vulnerable populations.

Fido’s unified mission is to protect and preserve muscle strength in older adults — through rehabilitation technology and clinically aligned nutritional support solutions.

Let"s Talk

Get in Touch

For professional inquiries or collaboration:

Tel: +354 820 9090
Reykjavík, Iceland

Focus

Functionality

Every idea should address a real, observed need — something that genuinely improves daily rehabilitation work.

Simplicity

Designs must be intuitive, reliable, and easy to use in real clinical environments.

Adaptability

Equipment should adjust to the user’s ability and context, not force the user to adapt to the device.

Evidence-based Design

Development is guided by research, clinical experience, and continuous testing in practical settings.

Arnar is continuously seeking evidence-based ways to optimise muscle health and prevent muscle loss in older adults. This mission guides all Fido development — from rehabilitation device innovation to clinically-aligned nutritional support products. Fido is currently in early development, focusing on building and testing new rehabilitation technology and clinically-relevant support solutions that genuinely preserve muscle function in daily life. We welcome contact from designers, engineers, and clinicians interested in thoughtful collaboration in this space.