Excellent language learning. Includes same-sex couples in some example sentences. Minor for adult users, worth awareness for families with children. 72/100 Spiritually Safe.
Duolingo is genuinely effective at building language skills, particularly vocabulary, reading, and listening comprehension. The gamification model has proven effective at building daily learning habits. Research from Duolingo Research has documented its effectiveness compared to university language courses for casual learners. For Christians wanting to learn Spanish for ministry, Hebrew or Greek for biblical study, or a foreign language for missionary preparation, Duolingo is a legitimate tool.
The LGBT content note: Duolingo has deliberately included same-sex couples in example sentences and story content. This is not graphic or sexual — it's incidental representation in language learning material. For most adult Christian users this is minor. For families using Duolingo with children ages 8-12, it is worth knowing. Alternatives: Pimsleur, Rosetta Stone, or Babbel if you prefer to avoid LGBT-inclusive content entirely. For biblical language learning specifically, BibleMesh is an excellent Hebrew and Greek alternative.