Duolingo · Product sense · Entry · 45 to 60 minutes

How should Duolingo evolve streaks?

Duolingo is a mobile app that teaches languages through short, game-like lessons. Answer this product management case and get it graded line by line against a weighted rubric.

product sense
user empathy
prioritization
metrics
tradeoff analysis

The situation

You are a PM on Duolingo's core learning experience team. The CEO and head of product ask you to review the daily streak feature before next year's roadmap is finalized. Streaks are one of the app's strongest habit builders, and leadership believes they play a big role in daily usage and premium conversion. But recent user research shows a growing tension. Some learners say the streak keeps them consistent, while others say they open the app only to avoid losing progress, complete the smallest possible action, and leave feeling annoyed rather than accomplished. Internal learning teams are also worried that high activity may be masking low-quality sessions that do not help users improve. Assume most DAUs have an active streak, daily usage is strong, and premium products benefit when users feel invested in maintaining progress. Your job is to recommend how Duolingo should handle streaks going forward so the company protects retention and revenue without turning language learning into a chore.

What to produce

Write a 1 to 2 page product strategy memo.

Your answer must

Define the core user problem in a way that separates healthy habit formation from low-value or stressful usage.
Identify the primary user segments affected by streaks and explain whose needs you would prioritize first.
Recommend one clear product direction for the streak experience, with 2 to 3 concrete feature changes or experiments.
List the key metrics you would use to judge success, including at least one retention metric, one learning quality metric, and one user sentiment metric.
Explain the main risks and tradeoffs, including possible impact on engagement, monetization, and user trust.

Constraints

Do not remove streaks entirely from the product.
Your proposal should work for both free and paid users.
You cannot assume a large increase in lesson length or major changes to Duolingo's brand identity.
You should focus on the streak problem, not redesign the whole app.

Format

Use sections with short headings such as problem, users, proposal, metrics, and risks.

How Duolingo actually played it

Looks at the streak feature, loss aversion, how it became a chore for some users, and how forgiving mechanics and AI changes softened it. Also notes the monetization angle.

Loss aversion drives habit but needs escape valves
Watch for the point where engagement turns into stress
Retention features often double as monetization levers

Built from The Psychology Behind Duolingo's Most Addictive Feature by Sid Arora (JAPM).