Comparison
Looking at Strella? See the price first.
Strella is a fast AI interview platform for product research. Its pricing page shows no numbers: seeing a price means requesting a demo. UnderHeard publishes every price, starts at €25 per month, hosts data in the EU, and you can be running interviews today.
UnderHeard
From €25 per month, billed yearly
Every price is published. No call required to see a number.
- Free plan: 30 interview minutes per month
- Self-serve signup, live in five minutes
- Team plans from €499 per month
- EU data hosting, five languages, GDPR ready
- Ranked report with real quotes in three days
Strella
Not published
Their pricing page lists no numbers; access goes through a demo request.
- Demo and sales conversation to see cost
- No free plan listed on their site
- AI-moderated interviews with fast turnaround
- Data processed and stored in the United States, per their privacy policy
- Sample interview experience available on their site
Side by side
| UnderHeard | Strella | |
|---|---|---|
| Published pricing | Yes, from €25 per month | No, demo required |
| Free plan | Yes, 30 interview minutes per month | None listed |
| Self-serve signup | Yes | No, demo-gated |
| Time to first interview | Minutes | A sales cycle |
| Interview style | Real five-minute voice conversations with adaptive follow-ups | AI-moderated interviews with fast study turnaround |
| What you get | One ranked report: themes, quotes, a recommendation, in three days | Study insights delivered in hours |
| Data hosting | EU | United States, per their privacy policy |
| Best for | Teams who want answers from their own customers, at a published price | US product teams running fast recruited studies |
Strella details are from strella.io, its pricing page and privacy policy, checked on 10 August 2026. If something has changed, tell us at support@underheard.ai and we will correct it.
An honest read
Choose UnderHeard if
- You want to know the price before you talk to anyone
- You want to interview your own customers, starting today
- You want a free plan to prove the value before paying
- EU data hosting matters to your legal or procurement team
- You want one ranked answer, not a stack of research artifacts
Choose Strella if
- You want very fast turnaround on recruited product studies
- Highlight reels and study-level insights fit your workflow
- Your team is US-based and US data processing is fine
- You prefer a sales-supported enterprise engagement
Frequently asked questions
How much does Strella cost?
Strella does not publish prices; its pricing page contains no numbers and access goes through a demo request. UnderHeard publishes every price: individual plans from €25 per month and team plans from €499 per month, with a free plan to start.
Is UnderHeard really self-serve?
Yes. You can sign up, run your first interviews on the free plan, and upgrade from inside the product. A demo is there if you want one, never a requirement.
Where is my interview data hosted?
UnderHeard hosts customer conversation data in the EU and operates under GDPR. Strella states in its privacy policy that information is processed and stored in the United States, with standard contractual clauses covering EEA transfers.
Do the two products do the same thing?
They overlap on AI-moderated interviews but serve different jobs. UnderHeard interviews your own customers by voice and ranks every conversation into one report of what to fix first. Strella focuses on fast recruited studies for product research teams.
Can I try UnderHeard before paying?
Yes, two ways: the free plan gives you 30 interview minutes every month without a card, and new workspaces get two weeks of the full Team plan free.
What does the report look like?
Recurring themes ranked by how often customers raised them, real quotes as evidence, and a concrete recommendation, delivered in three days. There is a sample report you can read before signing up.