Sigma is an internal software project developed and operated by Dafne Technologies OÜ. This page is provided to verify the association between the Sigma product, our company entity, and our payment and developer accounts (including Apple and Stripe).
Sigma is currently in a limited-access stage and is not yet publicly available as a consumer product.
Executive Summary
DAFNE TECHNOLOGIES OÜ is an Estonian software company developing SIGMA.AI, an AI-powered personal communication assistant offered as a subscription-based digital service. The company operates fully online with a lean remote team and a scalable SaaS model.
SIGMA.AI helps users communicate more clearly and confidently in digital conversations. It focuses on short-form messages, improving clarity, tone, emotional intelligence, and personal presentation such as bios and introductions.
The initial target market is individual consumers in the United States, followed by gradual expansion to EU and other regions as the product and operations mature. Customers pay recurring monthly or yearly subscriptions, processed online via providers such as Stripe, with funds settled into the company’s Revolut Business account.
Key differentiators include SIGMA.AI’s emphasis on conversational text, emotional nuance, mobile-first design, and a roadmap centered on personalisation and everyday practical use.
Distribution will begin on the Apple App Store (iOS), supported by cloud and AI infrastructure providers. Upcoming priorities include launching the MVP, validating product–market fit in the US, iterating quickly based on user feedback, refining pricing, and expanding internationally once the product is validated.
Contact
Legal & Compliance
Dafne Technologies OÜ is responsible for the development, maintenance, and operation of the Sigma software and related services. Any usage of Sigma is subject to applicable laws and to individual agreements concluded with our partners or users.
This website is intended primarily to provide clear identification of the legal entity behind Sigma for platforms such as Apple and Stripe. Additional legal documents (including detailed Terms of Service and Privacy Policy) are made available directly within our applications or provided upon request.