FreeLingo replaces 2 paid apps
One open-source tool, 2 subscriptions it can stand in for. Each pairing below is curated and verified by hand, with the honest catch spelled out. No votes, no pay-to-list.
LicenseAGPL-3.0
Platformsyour machine or their cloud
InstallationUse the hosted service, or run Docker Compose with PostgreSQL 16, Redis 7 and the configured AI/speech services
ModelsOllama, OpenAI, Anthropic or DeepSeek for language generation; Kokoro or OpenAI TTS; faster-whisper or OpenAI Whisper for speech recognition
DataSelf-hosted data in PostgreSQL, transient state in Redis, and generated/cached MP3 files; managed accounts live in FreeLingo's cloud
SetupSelf-hosting needs Docker plus an Ollama model or API keys; production voice also needs HTTPS, WebSocket proxying and either GPU-backed local models or paid APIs
facts verified 2026-08-10
Structured lessons and voice exercises backed by local or supplied models; less magical, more inspectable.
the verdict →
A Duolingo-shaped course runner with CEFR lessons, voice exercises and spaced review; self-hosting is the price of unlimited use.
the catchFreeLingo's course quality, gamification, social features and editorial maturity are far behind Duolingo, while serious self-hosted voice practice requires substantial infrastructure.
the verdict →all Duolingo Super alternatives →last updated 2026-08-10 · up to $372/yr replaced · no votes, no pay-to-list
