For solo founders

Validate your idea without booking 50 calls.

Send a Magic Link, get back voice notes from 20 real people in 48 hours, read the AI summaries while your coffee cools.

No login required for your prospects

The short answer

Customer discovery as a solo founder is mostly about removing scheduling friction. A Magic Link replaces the calendar invite. Recipients tap record, leave a 60-second voice note, and HeySpeak transcribes and summarizes each one. Twenty interviews in two days is normal. Ten minutes to read them all.

20+

voice responses in 48 hours from one Magic Link

60s

average response length, with full transcript and AI summary

10 min

to read all responses and spot the pattern

Why scheduling is the bottleneck

You can write a great cold email and still get a 5% reply rate on the calendar invite. The bottleneck is not your pitch. It is the 30-minute slot you are asking for. Voice notes flip the math: small ask, fast turnaround, more honest answers.

Write one sharp question

Skip the pitch. Ask about the last time they ran into the problem you are exploring. "Tell me about the last time you..." works better than "Would you use...".

Send the Magic Link

Drop the link into LinkedIn DMs, Slack threads, or follow-up emails. No login for the recipient, no app to install, no calendar to open.

Read the summaries

Each response gets a one-line summary plus the full transcript. Scan all twenty in ten minutes. Book live calls only with the two or three answers that surprised you.

Keep going

Two more pages on the same problem from different angles.

Comparison

Alternatives to discovery calls

Side-by-side: async voice, live calls, and text forms. When each one earns its place.

Playbook

How to do customer discovery async

Step-by-step playbook for running 20 customer conversations in a week without burning your calendar.

Common questions

How do I run customer interviews if no one will book a call?

Send a Magic Link instead of a Calendly. Recipients open the link, hit record, and leave a 60-second voice note. Most respond within a day, because asking for a minute of asynchronous voice is a much smaller ask than asking for a 30-minute slot in their calendar.

What's the fastest way to validate a SaaS idea?

Talk to 20 people in your target audience and ask one sharp question. With async voice you can run 20 conversations in 48 hours instead of 4 weeks. The AI summary collapses each response to one line, so you can scan all 20 in about ten minutes and spot the pattern.

Do voice responses give as much signal as live calls?

For most validation work, yes. You hear hesitation, frustration, and excitement in the voice that text strips out. You lose the live back-and-forth, so when you find the 2 or 3 people whose responses surprise you, book them for a real call. Use async to filter, live calls to dig.

How is this different from a Typeform?

Typeform collects text. Voice carries tone and context that text removes. People also talk faster than they type, so you get longer, more honest answers. The AI summary plus transcript gives you the structured output of a form with the depth of a conversation.

How many people should I send a Magic Link to?

Send to 30 if you want 20 responses. Voice replies convert better than calendar bookings, but not everyone will record. A 60-70% response rate is normal for warm contacts and 20-30% for cold. Pick a question that takes them under a minute to answer.

What questions work best for async voice validation?

Open ones that surface stories, not opinions. "Tell me about the last time you tried to do X" beats "Would you use a tool that does X?" Ask about past behavior, not hypothetical preference. One question per Magic Link is the sweet spot.

Stop scheduling. Start hearing back.

Your first 5 responses are on us.

Create your first Magic Link