by Aetherya

Every decision gets a world first.

Paste a page or drop in an ad. Thesia simulates the people it's meant for and shows you where they hesitate, object and leave.

Free first run. No sign up required.

Example study

600 simulated urban parents, Germany · select an answer to hear from it

Inside Thesia

Inside Thesia

Walk first-time users through a flow before it ships. See the step where they stall, and hear why they left.

Example results, not a real run.

Where do first-time users drop off in our onboarding?

Done

Finish onboarding

52%

Leave at Connect bank

35%

Ioana, 44, ClujLeaves at Connect bank
Said
I'd connect it once I've seen how it works.
Thought
Why does a budgeting app want my bank login before it has shown me anything?

Where they leave

  • Landing8%
  • Sign up8%
  • Connect bank35%
  • First budget5%

No study design, no recruiting, no waiting.

Built by Aetherya. Every simulated person runs on Myrias, our cognition model.

Pricing

One engine. Plans buy capacity, not quality.

See full pricing
Free
€0

Try Thesia

Thesia ProMost popular
€20/month

For founders, marketers, and solo operators

Thesia Max
From €100/month

5–12× more usage than Pro

Thesia Studio
€1,000/month

For agencies and small teams

Run your first simulation for free