Test the Idea Before the Interface
Concept validation beats design testing
Lyssna (formerly UsabilityHub) tests finished designs with real users through 5-second tests, first-click tests, and preference tests. TestSynthia tests whether the concept, pricing, and messaging work before you design anything. 1M+ stateful AI personas. $2.99 to start.
Compare with Lyssna
time to first result
demo run
stateful personas
The Comparison
Design testing vs. concept validation.
TestSynthiaThe Sequence Error
Testing design before concept.
The Prototype Trap
Lyssna requires a finished design or prototype to test. That means you've already invested design hours before knowing if the concept resonates. You're optimizing the execution of a potentially wrong idea.
The Panel Cost
Lyssna's 690K panel sounds large until you need niche B2B respondents. Premium panel access adds up fast. For frequent testing, per-test costs exceed subscription fees quickly.
The Wrong Question
Lyssna tells you 'users prefer Design A over Design B.' But what if neither design solves a real problem? TestSynthia asks 'will anyone pay for this?' before you design A or B.
When to Choose
Which Stage Are You At?
Use Both If...
Validate concept and messaging with TestSynthia. Design the winner. Then use Lyssna to optimize the design execution. Concept → Design → Polish.
Choose Lyssna If...
You have finished designs or prototypes and need to optimize visual hierarchy, navigation, and preference between options.
Choose TestSynthia If...
You're pre-design, testing concepts, pricing, and messaging. You need to validate WHAT to build before investing in HOW it looks.
The difference
Design-first testing vs.
concept-first validation.
Before
Design, prototype, then test preference
After
Validate concept, then design the winner
Pricing
Simple pricing. No design budget required
Validate before you invest in visuals
TestSynthia
- ✓1M+ stateful AI personas
- ✓500 responses per month
- ✓Priority generation (~10 min)
- ✓Top-ups available
- ✓No contract
Lyssna
- ✓690K participant panel
- ✓5-second tests
- ✓First-click tests
- ✓Preference tests
Basic at $75/mo, Pro at $175/mo. Panel tests may incur additional per-response costs.
Frequently asked questions
Compare with other tools
See how TestSynthia stacks up against more market research platforms
Maze tests interactive prototypes with real users. TestSynthia tests your concept with 1M+ AI personas before you write a line of code. Get directional feedback in 10 minutes, not days.
Hotjar needs a live website with real visitors to show heatmaps and recordings. TestSynthia needs nothing — 1M+ stateful AI personas tell you if your concept, pricing, and messaging will work before you write code or buy ads. $2.99 to start.
UserTesting connects you with real humans. TestSynthia simulates them — a living market simulation with 1M+ stateful AI personas. Get directional signal in 10 minutes. Validate before you invest in traditional user research.
Don't design a loser.
Validate it first.
The best-designed bad idea is still a bad idea. Test the concept before you invest in pixels.