Professional Certification & Skillsinteraction-design.org
Review data last updated .
Based on public reviews and response behavior.
100 reviews over 503 days (about 6 per month). Busiest month: 12% of reviews. Languages: en 94%, de 2%, unknown 2%.
Among fully-analyzed Professional Certification & Skills companies
45 companies not ranked: no reviews in the last 12 months or too few reviews we can score
79% of reviews positive, 21% negative
Covering July 2026 — 8 reviews, not the company's full review history.
Takeaway: Positive sentiment accounts for 88% of reviews in this period, with 13% negative and 0% neutral.
Share of theme mentions
