Martin vs Ren (formerly rencoach)

Martin is a personal assistant you reach by phone call, text, email, or Slack. It manages your calendar, inbox, reminders, and everyday tasks through conversation instead of clicking through separate productivity apps.

The product is built around the idea of a Jarvis-style helper that plugs into tools you already use. Gmail and Outlook inboxes, Google and Outlook calendars, SMS, WhatsApp, and Slack workspaces can be connected so Martin can search mail, draft replies, schedule events, and set reminders on request.

CC to Schedule is a standout workflow: copy [email protected] on an email thread and ask Martin to propose meeting times from your calendar. Pro subscribers also get morning email drafts, wake-up calls with weather and your daily schedule, and priority access to advanced models.

Martin runs as a web app and an iOS app with voice mode, push notifications, and shortcuts. DCWU, Inc. builds it as a Y Combinator company and announced a $2M seed round in January 2025.

Ren (formerly rencoach) is an in-the-moment coaching platform for managers and leaders. It lives inside Slack, Zoom, and Google Calendar, reading the real back-and-forth between people and surfacing the direct, kind conversation when it matters. Built for fast-moving teams that want accountability without surveillance.

The platform is grounded in The Accountability Dial, a methodology from Good Authority that has guided over 100,000 managers. Ren coaches both sides of a relationship privately, tying day-to-day work and the numbers you own to the growth underneath. It shows up proactively with morning briefs, pre-meeting nudges, and follow-through on commitments rather than waiting for you to ask.

Ren is aimed at managers, people leaders, and executives who struggle to balance challenge and care. CHROs and VPs of People use it to see where hard conversations are being avoided. Individual contributors can use the same framework to work across, upward, and with peers.