NumBuster
NumBuster identifies unknown callers and helps protect against phone fraud, spam, and unwanted messages.
What NumBuster is
NumBuster identifies unknown callers and helps protect against phone fraud, spam, and unwanted messages. On Android, it can show caller information on the call screen and check numbers from the call log. The iPhone app provides caller information, call-log number checks, and phone-number blocking. The homepage also describes an anti-spam SMS client for Android. A web app includes phone-number checks along with free and paid features. Users can review and rate numbers, creating community reports that help others judge possible threats. NumBuster says telephone-number information comes from registered users’ activity rather than a purchased subscriber directory. The free mobile app costs nothing. LIGHT, SMART, and PRO+ subscriptions add different combinations of features. Depending on the tier, these include no ads, page access blocking, NeurOwl AI reports, extra page cards, anonymous checks, visitor identification, increased monthly checks, rating breakdowns, and tier labels. Its privacy policy describes encryption, access controls, authentication, monitoring, logging, backups, vulnerability management, and restricted administrative access. Non-users can submit privacy or deletion requests through supported website mechanisms without installing the app or creating an account.
Good
- Free mobile app costs nothing
- Caller information appears on supported call screens
- iPhone users can block phone numbers
- Community reviews and ratings add threat context
- Android includes an anti-spam SMS client
- Web app provides number checks
Watch out
- Feature availability varies by country and device
- Service is not intended for EU, Bahrain, or UAE residents
- Some capabilities differ between Android, iPhone, and web
Who it suits
NumBuster suits mobile users who need caller identification, number checks, spam protection, or community ratings for suspicious numbers. It is also useful for people wanting browser-based checks or iPhone blocking, subject to regional and platform availability.
Verdict
Pick NumBuster if caller identification, number checks, and community reports are your priorities. The free mobile app covers core access, while LIGHT, SMART, and PRO+ add different paid tools. Consider another service if you live in a listed excluded territory or require identical features across platforms.
Plans and prices
From NumBuster's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | caller ID · spam call/SMS blocking · phone lookup · community reviews and tags · private notes |
| LIGHT | — | Animated icon · No ads · LIGHT badge |
| PRO+ | — | Rating breakdown · Anonymous checks · Visitor identification · Increased monthly checks · PRO+ tag · Page access blocking · NeurOwl AI reports · Additional page cards · Animated icon · Details tab · No ads |
| SMART | — | Page access blocking · NeurOwl AI reports · Additional page cards · Animated icon · Details tab · SMART tag · No ads |
The facts
Each one read from NumBuster's own pages, with the date it was checked.
What it does
- API statement
- The privacy policy refers to communications transmitted by senders via an API but does not present public API reference or SDK documentation on that page.checked 15 Oct 2026
- Availability limits
- The terms say feature availability may vary by country, operating system, app version, device, telecommunications provider, platform capability, or legal circumstances.checked 8 Oct 2026
- Call blocking
- Users can block unwanted callers and configure Android pattern-based blocking for number prefixes or unknown numbers.checked 15 Oct 2026
- Caller ID
- The Android app can act as the default phone manager, showing probable caller names and spam or robocall warnings before answering.checked 15 Oct 2026
- Community data
- Number information comes from registered users' permitted contacts, searches, tags, reviews, blocking actions and telephone-safety evaluations rather than a purchased subscriber directory.checked 15 Oct 2026
- Data deletion
- Google Play says users can request deletion of collected data, while the service provides account and personal-data deletion procedures.checked 15 Oct 2026
- Data sourcing
- The privacy policy says telephone-number information is obtained through registered users’ activity rather than a purchased subscriber directory.checked 8 Oct 2026
- Deletion requests
- The privacy policy says non-users can use supported website privacy and deletion mechanisms without installing the app or creating an account.checked 8 Oct 2026
- Hosting providers
- The current terms name Amazon Web Services, ClickHouse Cloud, CDNetworks, Firebase, Google Sign-In and Apple Sign-In among infrastructure or service providers.checked 15 Oct 2026
- Independent popularity
- AppBrain reports approximately 21 million installs and 80 thousand installs in the preceding 30 days.checked 15 Oct 2026
- Integrations
- The service supports caller identification in WhatsApp and Viber on Android and offers Google and Apple sign-in identifiers.checked 15 Oct 2026
- iPhone features
- The iPhone app offers caller information on the call screen, call-log number checks, and phone-number blocking.checked 8 Oct 2026
- Licence
- The software is proprietary and the terms grant users a non-exclusive licence to access the service.checked 15 Oct 2026
- LIGHT features
- LIGHT provides an animated icon, ad removal and a LIGHT badge on the user's page.checked 15 Oct 2026
- Limit: access reliability
- App Store reviews report login or loading failures, including a report that a newer version did not load in the UAE.checked 15 Oct 2026
- Limit: privacy criticism
- Trustpilot reviewers alleged that the service publishes phone numbers without consent and makes removal difficult, raising GDPR concerns.checked 15 Oct 2026
- Limit: service guarantees
- The terms disclaim guarantees of uninterrupted, secure, error-free or accurate results and tell users to independently verify number information.checked 15 Oct 2026
- Limit: SMS capability
- A Google Play reviewer complained that texting lacked photo or attachment support and reported poor premium-support response after requesting a refund.checked 15 Oct 2026
- Limit: usability and pricing
- An App Store reviewer described the app as laggy, requiring browser tabs and having too many paid functions.checked 15 Oct 2026
- Messenger caller ID
- On Android, a widget checks WhatsApp and Viber calls against NumBuster data and displays ratings, reviews, tags and scam warnings.checked 15 Oct 2026
The company
- Company legal name
- The service is operated by GOODLINE SOFTWARES W.L.L., commercial registration 175788-1.checked 15 Oct 2026
- Founded or launched
- Wikipedia records the Android project launch in May 2013 and the web site launch in February 2014.checked 15 Oct 2026
- Headquarters
- The operator lists Office 33, Building 114, Road 383, Block 316, Manama, Kingdom of Bahrain.checked 15 Oct 2026
- Ownership news
- Wikipedia states that Goodline Softwares W.L.L. acquired the project in 2025.checked 15 Oct 2026
The full review of NumBuster
NumBuster is a community-powered caller-identification and phone-number checking service for Android, iPhone, and the web. It fits people who want call-screen information backed by user ratings and reviews, with extra controls available through paid tiers. Its usefulness depends heavily on local eligibility, platform support, and the depth of its community data.
Overview
NumBuster is built to identify unfamiliar callers and help limit phone fraud, spam, and unwanted messages. Telephone-number information comes from activity by registered users rather than a purchased subscriber directory, so the service becomes more informative as people contribute ratings and reviews. Those community reports give recipients context when deciding whether a number looks suspicious.
The company is headquartered in Manama, Kingdom of Bahrain. Its terms state that the service and mobile apps are not intended for residents of the European Union, Bahrain, or the United Arab Emirates. Feature access can also change with country, operating system, app version, device, telecommunications provider, platform capability, or legal circumstances. These are material restrictions, not minor caveats: people in an excluded territory should choose another service.
Key features
Caller identification and number checks
On Android, NumBuster can display caller information on the call screen and provides number checks through the call log. That suits anyone who wants an initial signal while a call arrives, then a way to investigate a missed call. The iPhone app offers call-screen information and call-log checks too, and adds phone-number blocking, making the iPhone version more suitable when stopping repeat callers is a priority.
Community ratings and messaging protection
Users can review numbers and assign ratings, creating a shared record of potential threats. This is valuable for unfamiliar or frequently reported numbers, but it also means the quality of guidance is tied to user participation. NumBuster’s homepage describes an anti-spam SMS client for Android, extending the service beyond voice calls for Android users who also want protection from unwanted messages.
Web access, privacy, and support
The web app has its own help categories for paid features, free features, and phone-number checks, so NumBuster is not limited to a mobile workflow. Its privacy policy describes access controls, authentication and authorization, encryption, infrastructure and network security, monitoring and logging, vulnerability management, backups, and restricted administrative access. Non-users can use supported website privacy and deletion mechanisms without installing the app or creating an account. Support is available at [email protected] for questions, payment or registration problems, and rights-violation concerns.
Pricing
NumBuster uses a freemium model. The Free plan costs nothing and covers the free mobile app; paid features and subscription tiers are separate. It is the sensible starting point for readers who need core caller information, number checks, and community reports without committing to extras.
Paid tiers
- LIGHT has custom pricing and adds an animated icon, removes ads, and supplies a LIGHT badge. It fits users who mainly want a cleaner presentation rather than advanced checking tools.
- SMART has custom pricing and adds page access blocking, NeurOwl AI reports, additional page cards, an animated icon, a Details tab, a SMART tag, and no ads. Choose it when blocking access and richer report presentation matter more than basic identification.
- PRO+ has custom pricing and includes rating breakdowns, anonymous checks, visitor identification, increased monthly checks, a PRO+ tag, page access blocking, NeurOwl AI reports, additional page cards, an animated icon, a Details tab, and no ads. It is aimed at heavy users who need higher monthly checking capacity and the broadest documented tool set.
The paid descriptions do not state seat counts, trial periods, or renewal terms. Availability and exact capabilities can vary under the service terms, so buyers should confirm that a tier works on their country, device, and platform before paying.
Platforms
NumBuster supports Android, iOS, and the web. Android has call-screen identification, call-log checks, and the described anti-spam SMS client. iPhone includes call-screen information, call-log checks, and number blocking. Web access includes number checks and separate free and paid functionality. Because platform capability and app version can affect availability, users needing identical behavior everywhere should be cautious.
Who it's for
NumBuster is a good fit for people who regularly receive unknown calls and want community ratings alongside caller information. It also suits users who prefer checking numbers from a browser or who want iPhone blocking or Android SMS protection. The Free plan covers a straightforward first step; SMART and PRO+ are better for users who will use report, access-control, or higher-quota features. It is not appropriate for residents of the European Union, Bahrain, or the United Arab Emirates under the stated terms, or for anyone requiring guaranteed feature parity across devices.
Pros and cons
- Pros: caller information appears on Android and iPhone call screens; call-log checks work on both mobile platforms; iPhone adds number blocking; community reviews and ratings provide shared warning signals; web access supports browser-based checks; non-users can submit privacy and deletion requests without an account.
- Cons: service and apps exclude residents of the European Union, Bahrain, and the United Arab Emirates; feature availability can vary by country, carrier, device, version, and platform; paid-tier prices are custom pricing; community usefulness depends on registered-user activity; documented paid features differ by tier.
Alternatives
For a wider shortlist, see Spam Call Blocking Apps.
- Getcontact is an alternative with Android, iOS, and web access; its Premium plan costs $2.99 a month and removes ads while showing who viewed tags.
- YouMail suits readers who want voicemail-oriented limits, including 50 cloud messages, 100 voicemail-to-text transcriptions per month, and unlimited known-spammer blocking on its free plan.
- Hiya Spam Blocker is a mobile-only alternative with caller ID, basic blocking, and spam reporting free, plus a 3.99 USD monthly Premium plan.
- PhoneBlock is free, GPL-3.0-licensed software spanning Android, iOS, web, API, and self-hosted use.
- RoboKiller offers free global blacklist tools, spam notifications, weekly insights, reporting, and Spam Patrol, with a paid weekly-protection option.
- Should I Answer? provides community-based call protection across Android, iOS, web, and an extension.
- Who Called is a free, open-source option for Android, iOS, and web users.
- Whoscall combines caller ID, blocking, phone-number, URL, and screenshot checks with scam reports and rewards on its free plan.
Verdict
Choose NumBuster if community-powered number checks, call-screen identification, and cross-platform access match your needs and your location is eligible. Its combination of user ratings, mobile lookup tools, and tiered controls is the main reason to pick it. Look elsewhere if you live in an excluded territory, need consistent features on every platform, or want clearly published paid prices and terms before subscribing.
Getting started
- Visit the NumBuster website
- Install the Android or iPhone app, or open the web app
- Use caller information or check a number from the call log
- Review community ratings and reports
- Block numbers on iPhone when needed
- Choose the free app or an available LIGHT, SMART, or PRO+ subscription
Limits worth knowing
The free option is the mobile app with paid features and subscription tiers offered separately. Paid capabilities and availability can vary by country, operating system, app version, device, provider, platform capability, or legal circumstances.
Questions
Is NumBuster free?
The Free plan costs nothing and provides the free mobile app. LIGHT, SMART, and PRO+ subscriptions are also offered.
Which platforms does it support?
NumBuster supports Android, iOS, and the web.
What does the iPhone app do?
It provides caller information on the call screen, call-log number checks, and phone-number blocking.
How does NumBuster get phone-number information?
The privacy policy says information comes from registered users’ activity rather than a purchased subscriber directory.
Can non-users request deletion?
Yes. Non-users can use supported website privacy and deletion mechanisms without installing the app or creating an account.
What do the paid tiers add?
LIGHT, SMART, and PRO+ have different features, including no ads, access blocking, AI reports, extra cards, anonymous checks, visitor identification, rating breakdowns, and increased monthly checks.
Alternatives to NumBuster
- 1

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