18.1
RoboKiller is an Android and iOS app for blocking spam calls and filtering spam texts.
Free planAndroidiOSWeb
Best Call Blocking Software in 2026
Call blocking software helps identify spam callers, stop unwanted calls and, in some cases, screen calls before you answer. This category includes apps and services for Android and iOS, plus web and API access. Compare Android support first if you use a Xiaomi, Redmi or POCO phone. Then check spam caller ID, blocking modes, call screening, community reports and voicemail tools, along with free-plan, trial and paid…
28.1
Whoscall is an Android and iOS app for identifying callers and blocking spam and scam calls.
Free planAndroidiOSWeb
37.6
NumBuster identifies unknown callers and helps protect against phone fraud, spam, and unwanted messages.
Free planAndroidiOSWeb
- 4
Hiya Spam Blocker
Hiya Spam Blocker is a mobile app for Android and iOS that identifies unknown callers and screens or blocks unwanted spam, telemarketing, and robocalls.
Free planAndroidiOS7.1From $24 a year - 5
RealCall
RealCall is a mobile app for caller ID and blocking spam and scam calls, available on Android and iOS.
AndroidiOS7.0From $35.99 a year - 6
Nomorobo
AndroidiOS6.7From $19.99 a year - 7
Truecaller
Truecaller identifies incoming calls and messages and helps users detect and block spam.
AndroidiOSWeb6.7From $74.99 a year - 8
CallApp
Free planAndroidiOS6.6Free plan - 9
Callblock
iOS6.3From $19.99 a year - 10
Corta Spam
Corta Spam is a free, open-source Android app that screens incoming calls against rules before the phone rings.
Free planAndroid6.1Free plan - 11
SpamBlocker
SpamBlocker is a free Android app for screening unwanted calls and SMS while leaving the phone’s default call and messaging apps in place.
Free planAndroid6.1Free plan - 12
TrapCall
iOS5.8 - 13
Robo Shield
AndroidiOS4.9 - 14
CallShield
Android4.7
Choosing well
Check Android support
Confirm that the service has an Android app if you want call controls on a Xiaomi, Redmi or POCO phone. The category also includes iOS, web and API access, so platform coverage can differ by tool.
Check whether the features you need work on your chosen platform, not just whether a website or app exists.
Compare free plans and trials
A free plan can let you start without a subscription, while a free trial gives temporary access to a paid service. Check what remains available after a trial ends.
Listed pricing ranges from free plans to paid options such as Callblock from $1.99 per month and Nomorobo from $2.99 per month. Hiya Spam Blocker, Nomorobo and RoboKiller list seven-day trials.
Match blocking and screening tools
Look for the blocking modes that fit your calls, then compare spam caller ID and call-screening behavior. These controls determine how suspected spam is labeled, stopped or handled before you answer.
If voicemail handling matters, check the service's voicemail tools as a separate feature rather than assuming call blocking includes them.
Review reports and licensing
Community reports can add caller information to automated detection, so compare how a service uses that signal. For open-source projects, review the licence and documentation before changing or redistributing code.
CallShield, Corta Spam and SpamBlocker publish their projects on GitHub, while other entries provide product websites.
Questions people ask
Do these services work on Android?
Android is a supported platform in this category, but support can vary by product. Check the individual listing before installing on a Xiaomi, Redmi or POCO phone.
Can I try a call blocker for free?
Several listings offer a free plan, and Hiya Spam Blocker, Nomorobo and RoboKiller list seven-day trials. Check the plan terms for the features you need.
What should I compare besides price?
Compare spam caller ID, blocking modes, call screening, supported platforms, community reports and voicemail tools.
Are there open-source options?
CallShield, Corta Spam and SpamBlocker are listed with GitHub websites. Review each project's licence and documentation before using or modifying its code.
Do these tools include voicemail features?
Voicemail tools are a comparison category, so check the individual product details to confirm what voicemail functions are available.