How many onboarding quizzes ask demographic questions like age or gender?

24 of 119 quiz apps ask a demographic question — age, gender, weight, height, or date of birth — tied with goal questions as the most common quiz type.^[1] Demographics are worth asking only when they change the plan, as in fitness and medical apps. Don't collect age or gender for its own sake; each field is a drop-off risk.

24 of 119 quiz apps ask a demographic question (age, gender, weight, height) — Lazyweb Research, July 2026.

Lazyweb Research · n=119 · Published 2026-07-07

onboardingsignupux-patternsmobileexperiments

The finding

Demographic questions appear in 24 of 119 quiz apps, tied with goal questions (24) and just above habit questions (23).^[1]^[2] The demographic set covers age, gender, weight, height, and date of birth — fields that materially change a fitness, nutrition, or medical plan.

This question type concentrates in Health & Fitness, which is both the largest quiz category and the deepest-quiz vertical (avg 6.2 screens).^[3] In those apps, weight and height aren't vanity fields — they feed calorie targets and program calibration.

How to apply it

Ask a demographic question only when the answer changes something the user will see. Weight and height in a fitness app pass that test; age in a generic productivity app usually doesn't.

Because demographics feel personal, place them after the goal question so the user already understands why you're asking. A goal-first order gives the demographic fields a rationale and reduces abandonment.

Caveats

The count is deduped by company from vision descriptions and is a lower bound — a demographic screen counts only when the vision text names age, gender, weight, height, or DOB.^[1] Apps that collect demographics via native pickers the vision model didn't describe will be missed, so true adoption is likely higher.

The numbers

Stat	Computed from
24 of 119 quiz apps ask a demographic question	question_type_demographic
24 goal, 23 habit for comparison	question_type_goal; question_type_habit
H&F largest quiz category, avg 6.2 screens	quiz_apps_by_category; quiz_length_health_fitness

Methodology. Universe: 119 quiz apps in the Lazyweb vision corpus. Method: regex over vision_description for demographic fields, deduped by company, July 2026. Caveat: lower bound; native pickers not described by the vision model are missed.

Sources & citations

[1] Lazyweb Research analysis of 119 apps (Lazyweb onboarding-quiz corpus), July 2026. 24 quiz apps ask a demographic question (age, gender, weight, height, DOB); lower bound. ↩
[2] Lazyweb Research analysis of 119 apps (Lazyweb onboarding-quiz corpus), July 2026. Goal 24, habit 23 for comparison. ↩
[3] Lazyweb Research analysis of 24 apps (Lazyweb Health & Fitness quiz corpus), July 2026. H&F is the largest quiz category and deepest vertical (avg 6.2 screens); demographics concentrate here. ↩

Source: Lazyweb Research — proprietary analysis of real, in-market app screens. Cite as Lazyweb Research, 2026-07-07.