The completion screen is protecting ad delivery while interrupting the next learning moment.
Free learners need an immediate path into another lesson, while the ad surface still needs a valid request.
Who you’d be doing this for
“My streak counted, but the screen just sat there and my train arrived.”
Halima Wanjala · Free language learner
She uses short iPhone sessions during her commute to sustain a daily language practice habit.
What is at stake
Affected free iOS learners continue to another lesson only 71% of the time after completion. You must weigh a faster learning handoff against preserving eligible ad delivery.
Why it isn’t already fixed
Every obvious fix costs something else. That’s the part you’d have to decide.
- next-lesson momentum vs. eligible ad delivery
- asynchronous responsiveness vs. progress-state correctness
- weekly release speed vs. regression coverage
Why Duolingo
Duolingo’s free learning flow depends on short daily lessons continuing smoothly while ads support access.
Written with these in mind
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This is the setup. The work is inside.
Running it puts you in the room: the full situation and its constraints, stakeholders who push back in their own words, and the decisions that are yours to make. What you produce becomes a Day One Plan — work you can show someone instead of describing.