Live translation
Text reaches each learner in their own language, translated by one system with guards against wrong-language output. How it works
Erminai Oy, Helsinki
Language-learning technology for people who move to Finland and Sweden
Erminai builds Kielo, a mobile app that teaches Finnish and Swedish and explains everything in the learner's own language. This site shows how the technology works, for partners, investors and B2B buyers.
What Kielo is
Kielo is an iOS and Android app for adults who learn Finnish or Swedish for life, work or exams in the country they moved to. Learners do short daily practice, review what they have met, watch short videos, read news at their level, look up any word with a tap, and talk to an AI tutor on a voice call.
Kielo is live in the App Store and on Google Play. Finnish is the mature product. Swedish works end to end with a smaller content base.
- 28interface languages in the app, so learners are taught in their own language
- 2languages taught today: Finnish and Swedish
- 30languages on the App Store and Google Play listings
Sources for these numbers and the language list are on Languages.
What the technology does
Content pipeline
Articles, video and audio become words, grammar, lessons and exercises, then reach learners and social channels. How it works
Realtime voice tutor
Juka plays the other person in everyday scenes, on a live voice call, and feeds mistakes back into practice. How it works
Store listings
A builder and publisher for localized App Store and Google Play listings, plus a store reviews inbox. How it works
Adaptive learning engine
What to teach, how much and how hard, decided per learner from their own answers. How it works
Languages
Two learning languages, 28 interface languages, and a documented path to add more. Details
How it is built
Kielo is a set of small services on Google Cloud, in an EU region, that talk to each other through events. The apps are built with React Native and Expo. AI features call Google Gemini and a few other providers, behind daily budgets and a spend guard that stops accidental paid calls.
Work with us
If you are a partner, an investor or a buyer who wants to see more of any of this, write to connect@kielo.app.