Duolingo

The main app is suitable for ages 6 and up. Format includes iOS, Android, and web, with a mobile-first design. Pricing offers a free tier (with ads and hearts limits), Super Duolingo at $14.99 per month or $83.88 per year, a Family Plan at $119.99 per year for up to 6 members, and Max at $30 per month or $167.88 per year. The Family Plan economics are strong for homeschool households.

Duolingo is secular. A common concern in Christian homeschool communities is that example sentences include LGBT family structures (for example, 'my sister's girlfriend'). Some families skip these neutrally; others use them as discussion starters; some prefer to choose a different program. Duolingo does not run a cash affiliate program — only in-app referral credits for free Super weeks, and the company has been explicit about not monetizing creators.

Duolingo is universally loved as a fun supplement that drives daily practice through streak motivation. It is also universally considered insufficient as a standalone high school foreign-language credit — depth, grammar instruction, and writing practice are limited, and most homeschool families pair Duolingo with Rosetta Stone, a private tutor, or a graded reader for transcript-grade credit.

It works best for vocabulary building, daily-streak motivation, exposure to multiple languages cheaply, and the Duolingo ABC app for early literacy. It is not enough on its own for high school transcript credit, families avoiding LGBT-themed example sentences, or learners who find gamification distracting from depth.