Privacy First
No unnecessary data. Local processing wherever possible.
faervis
Building thoughtful software.
Privacy-first software.
Beautiful user experiences.
Built in Germany.
Software you can trust
faervis develops high-quality apps with a focus on privacy, usability, and long-term maintainability.
We believe software should be understandable, local, and trustworthy — not opaque, invasive, or disposable.
What guides our work
Modern Design
Clear interfaces that respect your attention.
Quality
Clean architecture and carefully crafted software.
Long-term
Apps built to be maintained and improved over years.
Apps under the faervis brand
Bitcoin Lab and Math Fox — with more thoughtful apps on the way.
Bitcoin Lab
Learn Bitcoin by doing.
Interactive Bitcoin learning simulator with wallet simulation, demo transactions, mempool explorer, and structured lessons — all offline.
- iOS
- Android
Math Fox
Practice primary school math with clarity.
A focused learning app for primary school mathematics, designed to support structured practice and understanding.
- iOS
- Android
Open for future ideas
We explore new product ideas that align with our values — privacy, clarity, and quality.
Why users can trust faervis
- No advertising
- No tracking
- Local processing wherever possible
- Clean architecture
- Transparency
Where we are headed
- 2025
faervis founded
The brand and product vision take shape.
- 2025
Bitcoin Lab
First app — interactive Bitcoin learning simulator.
- 2026
Launch
App Store and Google Play release.
- 2026+
More apps
Expanding the faervis product family.
- Future
Open source contributions optional
Frequently asked questions
What is faervis ?
faervis is a software brand that builds privacy-first, interactive applications. Bitcoin Lab is our first product — more apps will follow.
Is Bitcoin Lab free?
Bitcoin Lab is planned as a free educational app. Pricing details will be announced before launch.
Do you collect data?
This website collects no analytics and sets no tracking cookies. Our apps are designed to process data locally whenever possible.
Which platforms are supported?
Bitcoin Lab is planned for iOS and Android. Additional platforms may follow for future products.
How do I contact support?
Reach us at support@faervis.com. We respond to enquiries without contact forms on this website.
Will there be more apps?
Yes. faervis is a parent brand for multiple products. Bitcoin Lab is the first — others are in planning.
Is Bitcoin Lab financial advice?
No. Bitcoin Lab is an educational simulator. It uses no real Bitcoin and does not provide financial advice.
Where is faervis based?
faervis is built in Germany with a focus on European privacy standards.