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SPECIFICTION
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Who Called

who-called.com

Free plan WebiOSAndroid
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Spec score 8.1 #9 of 41 in Call blocker apps

What it is

Who Called filters unwanted calls with an official telemarketer prefix list and community reports. Its Android and iOS apps can block risky numbers before the phone rings on Android, while uncertain numbers can ring with a warning. The website lets people check an unknown number’s reputation and report it. Reports can be submitted anonymously without an account. An optional SMS shield hides notifications from unwanted messages without storing or transmitting message content. The maker says the apps have no account, ads or third-party trackers, and that user data is not sold or shared. Personal blocking rules, settings and the local call-filter log stay on the device and are removed when the app is uninstalled. Lookups and reports send information to the service; lookups are not stored, while reports are retained for at most 365 days. The API is hosted in the European Union and uses HTTPS/TLS encryption. Who Called is open source, free at free, and support is offered by email in French or English.

Spec sheet

Purpose
Who Called filters unwanted calls using an official telemarketer prefix list and community reports.Read 8 Oct 2026 · who-called.com
Platforms
The site lists Android and iOS; its homepage says the App Store release is coming soon and links to Google Play.Read 8 Oct 2026 · who-called.com
Privacy
The maker says the apps have no account, ads, third-party trackers, or sale or sharing of user data.Read 8 Oct 2026 · who-called.com
Support
Support is available by email in French or English, with a usual reply time of 48 business hours.Read 8 Oct 2026 · who-called.com
Headquarters
Paris, FranceRead 28 Sep 2026 · who-called.com
Additional features
The apps include two mini-games, DEFENSE and TRACE, with an anonymous daily leaderboard.Read 8 Oct 2026 · who-called.com
Call blocking
On Android, risky numbers can be blocked before the phone rings; uncertain numbers can ring with a warning.Read 8 Oct 2026 · who-called.com
Community reports
People can report numbers anonymously without an account, and the maker says reports help protect the community.Read 8 Oct 2026 · who-called.com
Data handling
Voluntary number reports and number lookups send information to the service; lookup requests are not stored, and reports are retained for at most 365 days.Read 8 Oct 2026 · who-called.com
Hosting and encryption
The maker says its API is hosted in the European Union and traffic is encrypted using HTTPS/TLS.Read 8 Oct 2026 · who-called.com
Limitations
The maker says the service is independent and not affiliated with ARCEP or any government entity; the app is provided as is with no guarantee of results.Read 8 Oct 2026 · who-called.com
Number lookup
The service lets people check an unknown number’s reputation and report it.Read 8 Oct 2026 · who-called.com
On-device data
Personal blocking rules, settings, and the local call-filter log stay on the device and are removed when the app is uninstalled.Read 8 Oct 2026 · who-called.com
Open source
The maker describes the app as open source and links to its public source-code repository.Read 8 Oct 2026 · who-called.com
SMS filtering
The app offers an optional SMS shield that hides notifications from unwanted messages without storing or transmitting their content.Read 8 Oct 2026 · who-called.com

Plans and prices

Free Free Free app; no paid tiers stated Read 8 Oct 2026 · who-called.com

Every Who Called plan and price →

Strong points and limits

Strong points

  • Blocks risky Android calls before ringing
  • Anonymous number reporting
  • Optional SMS notification shield
  • No account, ads or trackers
  • Open-source apps

Limits

  • No guarantee of results
  • Android-only pre-ring blocking
  • Reports retained up to 365 days
  • Lookup requests send information

Who it suits

Who Called suits people wanting call screening, number reputation checks and optional SMS filtering on Android, iOS or the web. It also fits users who prefer anonymous reports and on-device settings.

Verdict

Who Called combines call blocking, warnings, reputation lookups and community reporting in a free service. Its privacy choices are clearly stated, but results are not guaranteed and some blocking behavior is Android-specific.

Where Specifiction places it

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