CallApp vs NumBuster

CallApp is a caller ID and call-blocking app for Android and iOS. It provides real-time caller details, including names and photos, and labels unsaved numbers as spam, personal, or business. CallApp says it can identify over 8 billion unknown numbers worldwide and supports users in more than 200 countries. It can block unwanted calls and messages, blacklist spam numbers, and identify unknown numbers across WhatsApp, Telegram, SMS, and other messaging apps. Automatic recording is available for incoming and outgoing calls; the privacy policy says recordings remain on the user's device, not CallApp's servers. Contact enrichment can add photos, birthdays, job titles, and social profiles. CallApp's free basic plan includes caller ID, spam protection, and call blocking for unlimited time. CallApp for Business offers verified caller ID and branded calls, along with verified SMS identification and branded messages.

NumBuster identifies unknown callers and helps users screen phone fraud, spam, and unwanted messages. Its Android app can display caller information during a call and check numbers from the call log. The iPhone app also provides caller information on the call screen and call-log checks, and can block phone numbers. The homepage describes an anti-spam SMS client for Android, while a web app provides phone-number checks and help categories covering free and paid features.

Users can review and rate numbers, contributing community information that may help others assess potential threats. NumBuster says telephone-number information comes from registered users’ activity, not a purchased subscriber directory. A free mobile app is available alongside LIGHT, SMART, and PRO+ subscriptions, whose features vary. Depending on the tier, paid features include removing ads, page access blocking, AI reports, additional page cards, anonymous checks, visitor identification, and more monthly checks. The privacy policy describes safeguards including encryption, access controls, monitoring, backups, and vulnerability management. Non-users can submit privacy and deletion requests through supported website mechanisms without installing the app or creating an account. Feature availability can vary by country, operating system, app version, device, provider, platform capability, or legal circumstances. The terms say the service and mobile apps are not intended for residents of the EU, Bahrain, or the UAE.