Every “Duolingo for ___” idea
6 crossovers · 4 already exist · 0 open lanes1
| Idea | With | Verdict | Score | Tried |
|---|---|---|---|---|
| Duolingo for sign language | sign language | Already exists | 662 | 41 |
| Duolingo for geography | geography | Already exists | 722 | 31 |
| Duolingo for bible | bible | Already exists | 712 | 11 |
| Duolingo for cooking | cooking | Already exists | 712 | 11 |
| Duolingo for coding | coding | Crowded | 612 | 41 |
| Duolingo for finance | finance | Crowded | 662 | 31 |
- 1. This count is how many valid guide files for this company are in the repo, and how those files label the verdict. Recorded in the repo on 18 Oct 2026.
- 2. Duolingo Q2 2026 shareholder letter (SEC filing). Q2 2026: daily active users 58.7M (up 23% year over year), paid subscribers 12.7M at period end, MAUs 140.6M for the quarter. Streak Revival was a one-time June event that let eligible learners restore their longest-ever streak. The letter names longer trial offers as a lever for revenue and DAUs. Recorded 2026-10-19.
- 3. The 5 in the Thursday list is the issue length, not a count of pages on this site. Recorded in the project brief on 18 Oct 2026.