How Timeleft scaled a social product to 3M+ users in 3 years (Luba Vyaznikova, Timeleft)

Épisode de Clef de voûte par Timothé Frin | Stellar · 13 juillet 2026 · 1 h 02 min

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User feedback is overrated.

AI is nearly useless for the hardest part of product work.

These are two of the arguments Luba Vyaznikova makes in this episode.

Luba is Head of Product at Timeleft, a social product built around a simple idea: two clicks, and tomorrow evening you're sitting at a dinner table with 5 strangers who want the same thing as you.

Timeleft now runs in 60 cities around the world.

Before Timeleft, Luba spent years at Bumble and Badoo, two of the largest social products in the world.

She has seen the same product problems play out over and over, and she's built strong, contrarian views on how to navigate them.

If you're a Product Manager, CPO, or founder building a consumer product, this conversation is for you.

A few of the questions we tackle:

Why is treating user feedback as gospel a beginner's mistake?

How do you measure success when the value happens between people?

Why did every new PM at Badoo want to remove a 40% revenue feature?

Where does AI help in product work, and where doesn't it?

What's the difference between individual and institutional AI?

Enjoy the episode.

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[00:00] Introduction

[02:06] What Timeleft is really building

[04:30] Ecosystem thinking in social products

[07:55] Bumble : more than "women message first"

[09:47] How to measure success in a social product

[14:20] The metrics beyond experience score

[17:42] Reading emotional user feedback

[19:36] Bringing back angry users

[23:55] The Emirates first-class analogy

[29:25] Retention in B2B vs B2C

[30:54] Why user feedback is overrated

[34:05] The Badoo feature every PM wanted to remove

[41:39] The BlaBlaCar analogy

[43:49] Why AI can't help with product decisions

[48:31] Where AI actually helps at Timeleft

[52:34] The new bottleneck in Product teams

[54:50] Individual AI vs Institutional AI

[59:30] Why AI won't transform companies overnight

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Apprentissages, méthodes, outils et conseils pour faire décoller ton Produit. Je suis Timothé Frin, cofondateur de Stellar (https://www.wearestellar.io/). Ma mission : aider les startups à créer les produits tech de demain. Clef de voûte, c'est le podcast Product pour celles et ceux qui bâtissent…

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