Does Flexibits use Slack?
Yes
We hold strong evidence for this.
- The company names it in its own subprocessor list, a statement that this vendor handles its customers' data.
How we know
About Flexibits
Flexibits creates apps that are enjoyable and flexible, including Fantastical and Cardhop. The apps are designed to eliminate frustration and make your life more productive.
Summarized from its homepage on 4 Nov 2026.
What else Flexibits uses
Flexibits has evidence for 15 vendors. The strongest:
Other companies using Slack
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See Flexibits's full stack with a source for every vendor, and ask the same question about any company from the API, Claude or your browser.
- Every company and vendor, with its public source
- 100 API calls a month, plus MCP and the Chrome extension
- Work email only. No card, no sales call