Discover Your Human Digital Index
You track your steps. You track your calories. But who measures how your phone shapes your focus, your relationships, and your sense of self? The HDI test does — across 6 validated dimensions of digitality developed by Tomislav Krištof at Algebra Bernays University.
What Does the HDI Test Measure?
Screen time counts hours. The Human Digital Index measures impact.
The Human Digital Index (HDI) is a proprietary psychometric assessment measuring 6 dimensions of digitality — your total relationship with digital technology. Unlike screen-time trackers, HDI reveals how technology affects your attention span, emotional health, professional performance, and social identity. © 2026 Tomislav Krištof, HDI.Vision
6 Validated Dimensions
Health · Personality · Integration · Resilience · Influence · Business. Every dimension produces a scored profile.
45–60 Minutes
The comprehensive test takes under an hour. You'll never invest 60 minutes that reveal more about your digital life.
Personalized Report
Full report with dimension scores and behavioral patterns. Improvement report tracks your progress across monthly retakes.
Choose Your Assessment
Even the free test gives you a clearer picture than years of vague awareness. The comprehensive one gives you the full map.
Your first look at all 6 dimensions. Quick and honest — designed to surface your biggest digital blind spots without asking for your credit card.
- All 6 dimensions covered
- Overview score per dimension
- Summary report
- Improvement report
- Sub-dimension breakdown
A balanced, more precise picture across all 6 modules. Identifies the dimensions where you're losing the most ground — and begins pointing toward solutions.
- All 6 dimensions, deeper
- Precise scores per dimension
- Full report
- Monthly retake — compare before & after
- Improvement report
Pay via Stripe → create your account with the same email → access test immediately.
The complete picture. Six individual modules, each going deep into one dimension. Take them all at once or across your week — the most precise digital wellbeing measurement available.
- All 6 modules, maximum depth
- Full report
- Monthly retake — measure your improvement
- Improvement report
- Take modules separately
- Scientifically validated reliability
Pay via Stripe → create your account with the same email → access test immediately.
- Digital Health dimension — individual test per user
- Individual report per participant
- Aggregated team report
- Identifies team-wide digital health weaknesses
- Full report per participant
- Improvement report
- Monthly retake — measure team-wide improvement
- 20+ users: volume discount on inquiry
Group testing pairs naturally with a structured education program. Results feed directly into a tailored workshop cycle — so your team doesn't just measure the problem, they solve it.
Education programs starting at €1,000 for smaller groups.
Inquire about Team + EducationAll tests run at test.hdi.vision. Secure payment via Stripe. No subscription — one-time purchase.
Need a Full Education Program?
Testing is just the first step. HDI offers structured workshops and consulting programs for organizations that want to turn assessment results into lasting behavioral change.
How the HDI Assessment Works
Three steps from confusion about your digital habits to a clear, actionable profile.
Complete the Assessment
Answer ~200 calibrated questions on test.hdi.vision. Questions cover your daily technology habits, emotional responses, work patterns, and social behavior — honest answers produce the most useful results.
Receive Your Report
Your personalized report maps scores across all 6 HDI dimensions. You'll see exactly where technology supports your goals and where it quietly undermines your focus, relationships, and resilience.
Take Action
Your report includes specific behavioral recommendations calibrated to your lowest-scoring dimensions. You can also enroll in targeted workshops or book a one-on-one consulting session with Tomislav Krištof.
6 Dimensions. One Complete Picture.
Most digital wellbeing tools measure screen time or a single addiction scale. The Human Digital Index maps the full terrain of your digital life.
Digital Health
How your technology use affects sleep quality, eye strain, posture, attention span, and emotional regulation. The physiological and psychological baseline.
Digital Personality
Who you become online. Your digital identity, behavioral tendencies, self-presentation patterns, and the gap between your real and digital self.
Digital Integration
How technology integrates into your daily life, work flows, and relationships. Whether technology serves you — or runs you.
Digital Resilience
Your capacity to navigate digital threats, manage information overload, maintain boundaries, and recover from digital burnout or addiction patterns.
Digital Influence
How you shape — and are shaped by — digital environments. Your susceptibility to persuasion design, algorithmic influence, and your capacity to create meaningful digital impact.
Digital Business
Your professional digital competence — how technology affects your output quality, career growth, communication effectiveness, and organizational value.
The Comprehensive HDI Assessment
Finally, a test that explains why you feel mentally exhausted after a productive day, why your willpower evaporates at 9 PM, and why 30 "quick checks" of your phone add up to 3 hours of lost flow.
- ~200 validated questions across 6 dimensions
- Detailed personalized PDF report
- Specific action plan per weak dimension
- High scientific reliability — suitable for organizations
- Developed & validated at Algebra Bernays University
Secure payment via Stripe · GDPR compliant · Instant access after payment
Need group pricing for 10+ employees?
Contact us for an organizational package →
Frequently Asked Questions
Start With a Free Test Today
Even 10 minutes with the HDI quick test will reveal a pattern you haven't been able to name — but have always felt.
Questions? Contact us →
Pilot Program
Not Ready to Commit? Start with a Pilot.
Assessment for up to 15 people, one workshop session, full team report — €500. Applies toward any full program if you continue.
Request Pilot Program