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Growth · February 1, 2020

CS

CallStop – Superhuman for your phone number

Robocalls and unwanted calls are one of the biggest hassles these days. Over 50% of phone traffic is spam. I'm the founder of CallStop: https://apps.apple.com/us/app/callstop/id1455892856 CallStop allows you to: - Block 100% of robocalls on your current number, using your contacts as a whitelist - Effortlessly email call invites to an any email (that can be joined in one tap, the PIN is embedded), where the recipient can only call you starting 5 minutes before the meeting start and up until 5 minutes after the meeting end - Pause call filtering and have it…

CallStop – Superhuman for your phone number launched on February 1, 2020 with 91 votes, #328 of 3,162 launches that month and more than 90% of that year's launches.

Alternativestop 10% of February 2020

In plain words

CallStop is an iOS app that blocks robocalls and unwanted calls by using contacts as a whitelist, addressing the problem that over 50% of phone traffic is spam. It lets users send call invites via email with time-limited access, create temporary PIN codes for specific callers, and pause filtering as needed. The app is designed for anyone looking to reduce unwanted calls and manage who can reach them.

written from the facts on this page · September 2026

From the sources

In the maker’s words, at launch

Robocalls and unwanted calls are one of the biggest hassles these days. Over 50% of phone traffic is spam. I'm the founder of CallStop: https://apps.apple.com/us/app/callstop/id1455892856 CallStop allows you to: - Block 100% of robocalls on your current number, using your contacts as a…

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Source: Show HN post ↗ · launch text quoted in part

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