Callro
Blocks Android spam calls on-device before the phone rings, without reading your contacts.
Callro is a $9.99/month Android app that screens incoming calls through 26 on-device layers — signature verification, then behavioral and metadata analysis — and silently drops confirmed spam before the phone rings, with no network round-trip and no contacts access. It has a 4.7 rating on Google Play and offers a 7-day free trial with no card required. One flat plan covers everyone, whether you get 2 spam calls a week or 20 a day.
What holds up
- +All screening happens on-device — contacts, call logs, and audio never leave the phone.
- +Zero contacts access, unlike most call blockers that upload your address book to the cloud.
- +One flat $9.99/month plan for every feature, with a 7-day free trial and no card required.
Mind the limits
- −Android only — iPhone users aren't covered.
- −No free tier past the 7-day trial — full protection then costs $9.99/month ongoing.
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