Comparison
Looking at Strella? Hear your own customers.
Strella is a fast AI interview platform for product research. It runs recruited studies and stores data in the United States. Underheard talks with your own customers, keeps their conversations in the EU, and ranks every call into one report in three days.
Underheard
Your own customers
Conversations with the people who already buy from you, with data stored in the EU.
- Real five-minute voice conversations with adaptive follow-ups
- Invite them by link, phone, WhatsApp, email or SMS
- Data stored in the EU, 31 languages, GDPR ready
- Ranked report with real quotes in three days
Strella
Recruited studies
AI-moderated product research with fast turnaround.
- 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 | |
|---|---|---|
| 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, with data stored in the EU | 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 interview your own customers, starting today
- You want reasons with real quotes as evidence, in three days
- EU data storage 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
- Where the data is stored is not a factor for your team
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 walks you through pricing in a short demo, once we know who you want to hear from.
Who does Underheard interview?
Your own customers, from a list you already have or a link you share. No recruited panel, and no integration needed to start.
Where is my interview data hosted?
Underheard stores 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. Create a study for free in the Studio, or try the conversation demo on our homepage and take an interview yourself.
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.