Callin
The business, the turning points, and the decisions behind them.
Some sections are still being researched2 / 4
Sections to complete：02 · 05
01 / WHAT IT BUILT
What the company did
Callin was a social podcasting app launched in 2021 by David Sacks (former PayPal COO and Yammer CEO) and Axel Ericsson. It combined live social audio rooms, like Clubhouse or Twitter Spaces, with podcast production tools, letting creators stream live conversations, take audience questions, record, edit, and publish the result as a podcast episode from a phone.
02 / FAILURE REASONS
Material for this section is being gathered and checked. It will appear here once ready.
03 / EVENT HISTORY
Events in the structured record
- Company founded
David Sacks and Axel Ericsson found Callin in San Francisco and incubate it at Craft Ventures, billing it as the first social podcasting platform.
- Funding round
Callin launches on iOS and announces a $12 million Series A round co-led by Sequoia, Goldcrest, and Craft Ventures to fund Android and web versions.
- Acquisition
Video platform Rumble acquires Callin in May 2023 to move into podcasting; the standalone Callin consumer app is wound down and its technology is absorbed into Rumble streaming infrastructure.
04 / CONTEMPORARY REBUILD ASSESSMENT
Difficulty of rebuilding this project today
Material for this section is being gathered and checked. It will appear here once ready.
Overall assessment: Not completed
05 / CAUSAL CHAIN / AFTERMATH
Material for this section is being gathered and checked. It will appear here once ready.