LinkedIn · Mar 2026
Employee announcement post indicating Resonate was hiring/building a zero-to-one AI-native messaging product and confirming Sam Kaplan’s involvement.
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Resonate is an early-stage, San Francisco–based consumer communication startup building a public-bet iOS messaging app that centers on voice messages. The app emphasizes transcripts, summaries, filler-word cleanup, and coaching for clearer conversation. Public sources conflict on the founding year (2024 vs. 2025), so 2024 is the best-supported company start year from the available evidence.
Primary product
An iPhone voice-messaging app that adds transcripts, summaries, filler-word removal, editing, and communication coaching.
Founded
2024
Headquarters
San Francisco, United States
Team size
1-10
Industry
Technology, Information and Internet
Sub-industry
AI-native voice messaging
5 jobs at Resonate
Stage
Seed
Total raised
$500K
Latest round
Seed · Jan 2026
Latest amount
$500K
Jan 2026 · Y Combinator
Investors
Publicly building in private beta; very limited public information on team culture beyond an emphasis on shipping in public.
Differentiators
Technology
Customers
Competitors
LinkedIn · Mar 2026
Employee announcement post indicating Resonate was hiring/building a zero-to-one AI-native messaging product and confirming Sam Kaplan’s involvement.
Apple App Store · Feb 2026
Public product page describing the iPhone app and its core features: transcripts, summaries, filler-word removal, editing, and communication coaching.
Y Combinator · Jan 2026
YC company page shows Resonate as active, batch W26, San Francisco-based, and tied to founder Sam Kaplan.
LinkedIn · Jan 2026
Community post lists Resonate among YC W26 startups and characterizes it as AI-first messaging starting with audio.