Many churches gather people who speak many languages, yet the sermon is usually in one. Kaleo AI is a real-time translation and captioning platform so attendees can follow a service in their language from a phone, tablet, or computer.^1
When the pastor speaks, Kaleo transcribes the audio and translates it into 150+ languages. People scan a QR code or search for their church, then read captions or listen on headphones. Churches start from a web browser and the sound system — no special hardware, and no cap on how many people can join.^1 It is custom-trained on theological words and Bible names, so epistle does not become "a pistol," and it offers live captions plus Bluetooth hearing-aid support for deaf and hard-of-hearing members.^1^3
Aidan Britnell built Kaleo after his Oakville church offered Spanish translation while more than 70 languages were in the room.^2 He is a University of Toronto Mississauga computer science graduate and 2019 Schulich Leader who launched Kaleo in 2025; hundreds of churches in more than 25 countries use it.^2 He pitched it at Exponential EX Global through NEXT Ventures.^5 Attendee apps are free on iPhone and Android; churches use a subscription-based service after a free trial.^1^6
